fix ya.make

45 files changed, 122 insertions, 2161 deletions

diff --git a/library/python/filelock/ut/lib/test_filelock.py b/library/python/filelock/ut/lib/test_filelock.py
deleted file mode 100644
index 1b11d891231..00000000000
--- a/library/python/filelock/ut/lib/test_filelock.py
+++ /dev/null
@@ -1,83 +0,0 @@
-import os
-import time
-import logging
-import multiprocessing
-import tempfile
-import threading
-
-import library.python.filelock
-
-
-def _acquire_lock(lock_path, out_file_path):
-    with library.python.filelock.FileLock(lock_path):
-        with open(out_file_path, "a") as out:
-            out.write("{}:{}\n".format(os.getpid(), time.time()))
-        time.sleep(2)
-
-
-def test_filelock():
-    temp_dir = tempfile.mkdtemp()
-    lock_path = os.path.join(temp_dir, "file.lock")
-    out_file_path = os.path.join(temp_dir, "out.txt")
-
-    process_count = 5
-    processes = []
-    for i in range(process_count):
-        process = multiprocessing.Process(target=_acquire_lock, args=(lock_path, out_file_path))
-        process.start()
-        processes.append(process)
-
-    for process in processes:
-        process.join()
-
-    pids = []
-    times = []
-    with open(out_file_path) as out:
-        content = out.read()
-        logging.info("Times:\n%s", content)
-        for line in content.strip().split("\n"):
-            pid, time_val = line.split(":")
-            pids.append(pid)
-            times.append(float(time_val))
-
-    assert len(set(pids)) == process_count
-    time1 = times.pop()
-    while times:
-        time2 = times.pop()
-        assert int(time1) - int(time2) >= 2
-        time1 = time2
-
-
-def test_filelock_init_acquired():
-    temp_dir = tempfile.mkdtemp()
-    lock_path = os.path.join(temp_dir, "file.lock")
-
-    with library.python.filelock.FileLock(lock_path):
-        sublock = library.python.filelock.FileLock(lock_path)
-        del sublock
-
-
-def test_concurrent_lock():
-    filename = 'con.lock'
-
-    def lock():
-        l = library.python.filelock.FileLock(filename)
-        time.sleep(1)
-        l.acquire()
-        l.release()
-        try:
-            os.unlink(filename)
-        except OSError:
-            pass
-
-    threads = []
-    for i in range(100):
-        t = threading.Thread(target=lock)
-        t.daemon = True
-        threads.append(t)
-
-    for t in threads:
-        t.start()
-
-    for t in threads:
-        t.join()
diff --git a/library/python/pytest/allure/conftest.py b/library/python/pytest/allure/conftest.py
deleted file mode 100644
index 0d5cfda1e5a..00000000000
--- a/library/python/pytest/allure/conftest.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import os
-import pytest
-
-
-@pytest.mark.tryfirst
-def pytest_configure(config):
-    if "ALLURE_REPORT_DIR" in os.environ:
-        config.option.allurereportdir = os.environ["ALLURE_REPORT_DIR"]
diff --git a/library/python/pytest/empty/main.c b/library/python/pytest/empty/main.c
deleted file mode 100644
index 9efa08162a7..00000000000
--- a/library/python/pytest/empty/main.c
+++ /dev/null
@@ -1,7 +0,0 @@
-/*
-to be used for build python tests in a stub binary for the case of using system python
-*/
-
-int main(void) {
-    return 0;
-}
diff --git a/library/python/runtime_py3/__res.pyx b/library/python/runtime_py3/__res.pyx
deleted file mode 100644
index 97190d9f293..00000000000
--- a/library/python/runtime_py3/__res.pyx
+++ /dev/null
@@ -1,36 +0,0 @@
-from _codecs import utf_8_decode, utf_8_encode
-
-from libcpp cimport bool
-
-from util.generic.string cimport TString, TStringBuf
-
-
-cdef extern from "library/cpp/resource/resource.h" namespace "NResource":
-    cdef size_t Count() except +
-    cdef TStringBuf KeyByIndex(size_t idx) except +
-    cdef bool FindExact(const TStringBuf key, TString* result) nogil except +
-
-
-def count():
-    return Count()
-
-
-def key_by_index(idx):
-    cdef TStringBuf ret = KeyByIndex(idx)
-
-    return ret.Data()[:ret.Size()]
-
-
-def find(s):
-    cdef TString res
-
-    if isinstance(s, str):
-        s = utf_8_encode(s)[0]
-
-    if FindExact(TStringBuf(s, len(s)), &res):
-        return res.c_str()[:res.length()]
-
-    return None
-
-
-include "importer.pxi"
diff --git a/library/python/runtime_py3/entry_points.py b/library/python/runtime_py3/entry_points.py
deleted file mode 100644
index 05098723cb8..00000000000
--- a/library/python/runtime_py3/entry_points.py
+++ /dev/null
@@ -1,52 +0,0 @@
-import sys
-
-import __res
-
-
-def repl():
-    user_ns = {}
-    py_main = __res.find('PY_MAIN')
-
-    if py_main:
-        mod_name, func_name = (py_main.split(b':', 1) + [None])[:2]
-        try:
-            import importlib
-            mod = importlib.import_module(mod_name.decode('UTF-8'))
-            user_ns = mod.__dict__
-        except:
-            import traceback
-            traceback.print_exc()
-
-        if func_name and '__main__' not in user_ns:
-            def run(args):
-                if isinstance(args, str):
-                    import shlex
-                    args = shlex.split(args)
-
-                import sys
-                sys.argv = [sys.argv[0]] + args
-                getattr(mod, func_name)()
-
-            user_ns['__main__'] = run
-
-    try:
-        import IPython
-    except ModuleNotFoundError:
-        pass
-    else:
-        return IPython.start_ipython(user_ns=user_ns)
-
-    import code
-    code.interact(local=user_ns)
-
-
-def resource_files():
-    sys.stdout.buffer.write(b'\n'.join(sorted(__res.resfs_files()) + [b'']))
-
-
-def run_constructors():
-    for key, module_name in __res.iter_keys(b'py/constructors/'):
-        import importlib
-        module = importlib.import_module(module_name.decode())
-        init_func = getattr(module, __res.find(key).decode())
-        init_func()
diff --git a/library/python/runtime_py3/importer.pxi b/library/python/runtime_py3/importer.pxi
deleted file mode 100644
index 9a54e7f0f92..00000000000
--- a/library/python/runtime_py3/importer.pxi
+++ /dev/null
@@ -1,584 +0,0 @@
-import marshal
-import sys
-from _codecs import utf_8_decode, utf_8_encode
-from _frozen_importlib import _call_with_frames_removed, spec_from_loader, BuiltinImporter
-from _frozen_importlib_external import _os, _path_isfile, _path_isabs, path_sep, _path_join, _path_split
-from _io import FileIO
-
-import __res as __resource
-
-_b = lambda x: x if isinstance(x, bytes) else utf_8_encode(x)[0]
-_s = lambda x: x if isinstance(x, str) else utf_8_decode(x)[0]
-env_entry_point = b'Y_PYTHON_ENTRY_POINT'
-env_source_root = b'Y_PYTHON_SOURCE_ROOT'
-cfg_source_root = b'arcadia-source-root'
-env_extended_source_search = b'Y_PYTHON_EXTENDED_SOURCE_SEARCH'
-res_ya_ide_venv = b'YA_IDE_VENV'
-executable = sys.executable or 'Y_PYTHON'
-sys.modules['run_import_hook'] = __resource
-
-# This is the prefix in contrib/tools/python3/src/Lib/ya.make.
-py_prefix = b'py/'
-py_prefix_len = len(py_prefix)
-
-YA_IDE_VENV = __resource.find(res_ya_ide_venv)
-Y_PYTHON_EXTENDED_SOURCE_SEARCH = _os.environ.get(env_extended_source_search) or YA_IDE_VENV
-
-
-def _init_venv():
-    if not _path_isabs(executable):
-        raise RuntimeError('path in sys.executable is not absolute: {}'.format(executable))
-
-    # Creative copy-paste from site.py
-    exe_dir, _ = _path_split(executable)
-    site_prefix, _ = _path_split(exe_dir)
-    libpath = _path_join(site_prefix, 'lib',
-                           'python%d.%d' % sys.version_info[:2],
-                           'site-packages')
-    sys.path.insert(0, libpath)
-
-    # emulate site.venv()
-    sys.prefix = site_prefix
-    sys.exec_prefix = site_prefix
-
-    conf_basename = 'pyvenv.cfg'
-    candidate_confs = [
-        conffile for conffile in (
-            _path_join(exe_dir, conf_basename),
-            _path_join(site_prefix, conf_basename)
-            )
-        if _path_isfile(conffile)
-        ]
-    if not candidate_confs:
-        raise RuntimeError('{} not found'.format(conf_basename))
-    virtual_conf = candidate_confs[0]
-    with FileIO(virtual_conf, 'r') as f:
-        for line in f:
-            if b'=' in line:
-                key, _, value = line.partition(b'=')
-                key = key.strip().lower()
-                value = value.strip()
-                if key == cfg_source_root:
-                    return value
-    raise RuntimeError('{} key not found in {}'.format(cfg_source_root, virtual_conf))
-
-
-def _get_source_root():
-    env_value = _os.environ.get(env_source_root)
-    if env_value or not YA_IDE_VENV:
-        return env_value
-
-    return _init_venv()
-
-
-Y_PYTHON_SOURCE_ROOT = _get_source_root()
-
-
-def _print(*xs):
-    """
-    This is helpful for debugging, since automatic bytes to str conversion is
-    not available yet.  It is also possible to debug with GDB by breaking on
-    __Pyx_AddTraceback (with Python GDB pretty printers enabled).
-    """
-    parts = []
-    for s in xs:
-        if not isinstance(s, (bytes, str)):
-            s = str(s)
-        parts.append(_s(s))
-    sys.stderr.write(' '.join(parts) + '\n')
-
-
-def file_bytes(path):
-    # 'open' is not avaiable yet.
-    with FileIO(path, 'r') as f:
-        return f.read()
-
-
-def iter_keys(prefix):
-    l = len(prefix)
-    for idx in range(__resource.count()):
-        key = __resource.key_by_index(idx)
-        if key.startswith(prefix):
-            yield key, key[l:]
-
-
-def iter_py_modules(with_keys=False):
-    for key, path in iter_keys(b'resfs/file/' + py_prefix):
-        if path.endswith(b'.py'):  # It may also end with '.pyc'.
-            mod = _s(path[:-3].replace(b'/', b'.'))
-            if with_keys:
-                yield key, mod
-            else:
-                yield mod
-
-
-def iter_prefixes(s):
-    i = s.find('.')
-    while i >= 0:
-        yield s[:i]
-        i = s.find('.', i + 1)
-
-
-def resfs_resolve(path):
-    """
-    Return the absolute path of a root-relative path if it exists.
-    """
-    path = _b(path)
-    if Y_PYTHON_SOURCE_ROOT:
-        if not path.startswith(Y_PYTHON_SOURCE_ROOT):
-            path = _b(path_sep).join((Y_PYTHON_SOURCE_ROOT, path))
-        if _path_isfile(path):
-            return path
-
-
-def resfs_src(key, resfs_file=False):
-    """
-    Return the root-relative file path of a resource key.
-    """
-    if resfs_file:
-        key = b'resfs/file/' + _b(key)
-    return __resource.find(b'resfs/src/' + _b(key))
-
-
-def resfs_read(path, builtin=None):
-    """
-    Return the bytes of the resource file at path, or None.
-    If builtin is True, do not look for it on the filesystem.
-    If builtin is False, do not look in the builtin resources.
-    """
-    if builtin is not True:
-        arcpath = resfs_src(path, resfs_file=True)
-        if arcpath:
-            fspath = resfs_resolve(arcpath)
-            if fspath:
-                return file_bytes(fspath)
-
-    if builtin is not False:
-        return __resource.find(b'resfs/file/' + _b(path))
-
-
-def resfs_files(prefix=b''):
-    """
-    List builtin resource file paths.
-    """
-    return [key[11:] for key, _ in iter_keys(b'resfs/file/' + _b(prefix))]
-
-
-def mod_path(mod):
-    """
-    Return the resfs path to the source code of the module with the given name.
-    """
-    return py_prefix + _b(mod).replace(b'.', b'/') + b'.py'
-
-
-class ResourceImporter(object):
-
-    """ A meta_path importer that loads code from built-in resources.
-    """
-
-    def __init__(self):
-        self.memory = set(iter_py_modules())  # Set of importable module names.
-        self.source_map = {}                  # Map from file names to module names.
-        self._source_name = {}                # Map from original to altered module names.
-        self._package_prefix = ''
-        if Y_PYTHON_SOURCE_ROOT and Y_PYTHON_EXTENDED_SOURCE_SEARCH:
-            self.arcadia_source_finder = ArcadiaSourceFinder(_s(Y_PYTHON_SOURCE_ROOT))
-        else:
-            self.arcadia_source_finder = None
-
-        for p in list(self.memory) + list(sys.builtin_module_names):
-            for pp in iter_prefixes(p):
-                k = pp + '.__init__'
-                if k not in self.memory:
-                    self.memory.add(k)
-
-    def for_package(self, name):
-        import copy
-        importer = copy.copy(self)
-        importer._package_prefix = name + '.'
-        return importer
-
-    def _find_mod_path(self, fullname):
-        """Find arcadia relative path by module name"""
-        relpath = resfs_src(mod_path(fullname), resfs_file=True)
-        if relpath or not self.arcadia_source_finder:
-            return relpath
-        return self.arcadia_source_finder.get_module_path(fullname)
-
-    def find_spec(self, fullname, path=None, target=None):
-        try:
-            is_package = self.is_package(fullname)
-        except ImportError:
-            return None
-        return spec_from_loader(fullname, self, is_package=is_package)
-
-    def find_module(self, fullname, path=None):
-        """For backward compatibility."""
-        spec = self.find_spec(fullname, path)
-        return spec.loader if spec is not None else None
-
-    def create_module(self, spec):
-        """Use default semantics for module creation."""
-
-    def exec_module(self, module):
-        code = self.get_code(module.__name__)
-        module.__file__ = code.co_filename
-        if self.is_package(module.__name__):
-            module.__path__= [executable + path_sep + module.__name__.replace('.', path_sep)]
-        # exec(code, module.__dict__)
-        _call_with_frames_removed(exec, code, module.__dict__)
-
-    # PEP-302 extension 1 of 3: data loader.
-    def get_data(self, path):
-        path = _b(path)
-        abspath = resfs_resolve(path)
-        if abspath:
-            return file_bytes(abspath)
-        path = path.replace(_b('\\'), _b('/'))
-        data = resfs_read(path, builtin=True)
-        if data is None:
-            raise IOError(path)  # Y_PYTHON_ENTRY_POINT=:resource_files
-        return data
-
-    # PEP-302 extension 2 of 3: get __file__ without importing.
-    def get_filename(self, fullname):
-        modname = fullname
-        if self.is_package(fullname):
-            fullname += '.__init__'
-        relpath = self._find_mod_path(fullname)
-        if isinstance(relpath, bytes):
-            relpath = _s(relpath)
-        return relpath or modname
-
-    # PEP-302 extension 3 of 3: packaging introspection.
-    # Used by `linecache` (while printing tracebacks) unless module filename
-    # exists on the filesystem.
-    def get_source(self, fullname):
-        fullname = self._source_name.get(fullname) or fullname
-        if self.is_package(fullname):
-            fullname += '.__init__'
-
-        relpath = self.get_filename(fullname)
-        if relpath:
-            abspath = resfs_resolve(relpath)
-            if abspath:
-                return _s(file_bytes(abspath))
-        data = resfs_read(mod_path(fullname))
-        return _s(data) if data else ''
-
-    def get_code(self, fullname):
-        modname = fullname
-        if self.is_package(fullname):
-            fullname += '.__init__'
-
-        path = mod_path(fullname)
-        relpath = self._find_mod_path(fullname)
-        if relpath:
-            abspath = resfs_resolve(relpath)
-            if abspath:
-                data = file_bytes(abspath)
-                return compile(data, _s(abspath), 'exec', dont_inherit=True)
-
-        yapyc_path = path + b'.yapyc3'
-        yapyc_data = resfs_read(yapyc_path, builtin=True)
-        if yapyc_data:
-            return marshal.loads(yapyc_data)
-        else:
-            py_data = resfs_read(path, builtin=True)
-            if py_data:
-                return compile(py_data, _s(relpath), 'exec', dont_inherit=True)
-            else:
-                # This covers packages with no __init__.py in resources.
-                return compile('', modname, 'exec', dont_inherit=True)
-
-    def is_package(self, fullname):
-        if fullname in self.memory:
-            return False
-
-        if fullname + '.__init__' in self.memory:
-            return True
-
-        if self.arcadia_source_finder:
-            return self.arcadia_source_finder.is_package(fullname)
-
-        raise ImportError(fullname)
-
-    # Extension for contrib/python/coverage.
-    def file_source(self, filename):
-        """
-        Return the key of the module source by its resource path.
-        """
-        if not self.source_map:
-            for key, mod in iter_py_modules(with_keys=True):
-                path = self.get_filename(mod)
-                self.source_map[path] = key
-
-        if filename in self.source_map:
-            return self.source_map[filename]
-
-        if resfs_read(filename, builtin=True) is not None:
-            return b'resfs/file/' + _b(filename)
-
-        return b''
-
-    # Extension for pkgutil.iter_modules.
-    def iter_modules(self, prefix=''):
-        import re
-        rx = re.compile(re.escape(self._package_prefix) + r'([^.]+)(\.__init__)?$')
-        for p in self.memory:
-            m = rx.match(p)
-            if m:
-                yield prefix + m.group(1), m.group(2) is not None
-        if self.arcadia_source_finder:
-            for m in self.arcadia_source_finder.iter_modules(self._package_prefix, prefix):
-                yield m
-
-    def get_resource_reader(self, fullname):
-        try:
-            if not self.is_package(fullname):
-                return None
-        except ImportError:
-            return None
-        return _ResfsResourceReader(self, fullname)
-
-
-class _ResfsResourceReader:
-
-    def __init__(self, importer, fullname):
-        self.importer = importer
-        self.fullname = fullname
-
-        import os
-        self.prefix = "{}/".format(os.path.dirname(self.importer.get_filename(self.fullname)))
-
-    def open_resource(self, resource):
-        path = f'{self.prefix}{resource}'
-        from io import BytesIO
-        try:
-            return BytesIO(self.importer.get_data(path))
-        except OSError:
-            raise FileNotFoundError(path)
-
-    def resource_path(self, resource):
-        # All resources are in the binary file, so there is no path to the file.
-        # Raising FileNotFoundError tells the higher level API to extract the
-        # binary data and create a temporary file.
-        raise FileNotFoundError
-
-    def is_resource(self, name):
-        path = f'{self.prefix}{name}'
-        try:
-            self.importer.get_data(path)
-        except OSError:
-            return False
-        return True
-
-    def contents(self):
-        subdirs_seen = set()
-        for key in resfs_files(self.prefix):
-            relative = key[len(self.prefix):]
-            res_or_subdir, *other = relative.split(b'/')
-            if not other:
-                yield _s(res_or_subdir)
-            elif res_or_subdir not in subdirs_seen:
-                subdirs_seen.add(res_or_subdir)
-                yield _s(res_or_subdir)
-
-
-class BuiltinSubmoduleImporter(BuiltinImporter):
-    @classmethod
-    def find_spec(cls, fullname, path=None, target=None):
-        if path is not None:
-            return super().find_spec(fullname, None, target)
-        else:
-            return None
-
-
-class ArcadiaSourceFinder:
-    """
-        Search modules and packages in arcadia source tree.
-        See https://wiki.yandex-team.ru/devtools/extended-python-source-search/ for details
-    """
-    NAMESPACE_PREFIX = b'py/namespace/'
-    PY_EXT = '.py'
-    YA_MAKE = 'ya.make'
-    S_IFDIR = 0o040000
-
-    def __init__(self, source_root):
-        self.source_root = source_root
-        self.module_path_cache = {'': set()}
-        for key, dirty_path in iter_keys(self.NAMESPACE_PREFIX):
-            # dirty_path contains unique prefix to prevent repeatable keys in the resource storage
-            path = dirty_path.split(b'/', 1)[1]
-            namespaces = __resource.find(key).split(b':')
-            for n in namespaces:
-                package_name = _s(n.rstrip(b'.'))
-                self.module_path_cache.setdefault(package_name, set()).add(_s(path))
-                # Fill parents with default empty path set if parent doesn't exist in the cache yet
-                while package_name:
-                    package_name = package_name.rpartition('.')[0]
-                    if package_name in self.module_path_cache:
-                        break
-                    self.module_path_cache.setdefault(package_name, set())
-        for package_name in self.module_path_cache.keys():
-            self._add_parent_dirs(package_name, visited=set())
-
-    def get_module_path(self, fullname):
-        """
-            Find file path for module 'fullname'.
-            For packages caller pass fullname as 'package.__init__'.
-            Return None if nothing is found.
-        """
-        try:
-            if not self.is_package(fullname):
-                return _b(self._cache_module_path(fullname))
-        except ImportError:
-            pass
-
-    def is_package(self, fullname):
-        """Check if fullname is a package. Raise ImportError if fullname is not found"""
-        path = self._cache_module_path(fullname)
-        if isinstance(path, set):
-            return True
-        if isinstance(path, str):
-            return False
-        raise ImportError(fullname)
-
-    def iter_modules(self, package_prefix, prefix):
-        paths = self._cache_module_path(package_prefix.rstrip('.'))
-        if paths is not None:
-            # Note: it's ok to yield duplicates because pkgutil discards them
-
-            # Yield from cache
-            import re
-            rx = re.compile(re.escape(package_prefix) + r'([^.]+)$')
-            # Save result to temporary list to prevent 'RuntimeError: dictionary changed size during iteration'
-            found = []
-            for mod, path in self.module_path_cache.items():
-                if path is not None:
-                    m = rx.match(mod)
-                    if m:
-                        found.append((prefix + m.group(1), self.is_package(mod)))
-            for cm in found:
-                yield cm
-
-            # Yield from file system
-            for path in paths:
-                abs_path = _path_join(self.source_root, path)
-                for dir_item in _os.listdir(abs_path):
-                    if self._path_is_simple_dir(_path_join(abs_path, dir_item)):
-                        yield prefix  +  dir_item, True
-                    elif dir_item.endswith(self.PY_EXT) and _path_isfile(_path_join(abs_path, dir_item)):
-                        yield prefix + dir_item[:-len(self.PY_EXT)], False
-
-    def _isdir(self, path):
-        """ Unlike _path_isdir() this function don't follow symlink """
-        try:
-            stat_info = _os.lstat(path)
-        except OSError:
-            return False
-        return (stat_info.st_mode & 0o170000) == self.S_IFDIR
-
-    def _path_is_simple_dir(self, abs_path):
-        """
-            Check if path is a directory but doesn't contain ya.make file.
-            We don't want to steal directory from nested project and treat it as a package
-        """
-        return self._isdir(abs_path) and not _path_isfile(_path_join(abs_path, self.YA_MAKE))
-
-    def _find_module_in_paths(self, find_package_only, paths, module):
-        """Auxiliary method. See _cache_module_path() for details"""
-        if paths:
-            package_paths = set()
-            for path in paths:
-                rel_path = _path_join(path, module)
-                if not find_package_only:
-                    # Check if file_path is a module
-                    module_path = rel_path + self.PY_EXT
-                    if _path_isfile(_path_join(self.source_root, module_path)):
-                        return module_path
-                # Check if file_path is a package
-                if self._path_is_simple_dir(_path_join(self.source_root, rel_path)):
-                    package_paths.add(rel_path)
-            if package_paths:
-                return package_paths
-
-    def _cache_module_path(self, fullname, find_package_only=False):
-        """
-            Find module path or package directory paths and save result in the cache
-
-            find_package_only=True - don't try to find module
-
-            Returns:
-               List of relative package paths - for a package
-               Relative module path - for a module
-               None - module or package is not found
-        """
-        if fullname not in self.module_path_cache:
-            parent, _, tail = fullname.rpartition('.')
-            parent_paths = self._cache_module_path(parent, find_package_only=True)
-            self.module_path_cache[fullname] = self._find_module_in_paths(find_package_only, parent_paths, tail)
-        return self.module_path_cache[fullname]
-
-    def _add_parent_dirs(self, package_name, visited):
-        if not package_name or package_name in visited:
-            return
-        visited.add(package_name)
-
-        parent, _, tail = package_name.rpartition('.')
-        self._add_parent_dirs(parent, visited)
-
-        paths = self.module_path_cache[package_name]
-        for parent_path in self.module_path_cache[parent]:
-            rel_path = _path_join(parent_path, tail)
-            if self._path_is_simple_dir(_path_join(self.source_root, rel_path)):
-                paths.add(rel_path)
-
-
-def excepthook(*args, **kws):
-    # traceback module cannot be imported at module level, because interpreter
-    # is not fully initialized yet
-
-    import traceback
-
-    return traceback.print_exception(*args, **kws)
-
-
-importer = ResourceImporter()
-
-
-def executable_path_hook(path):
-    if path == executable:
-        return importer
-
-    if path.startswith(executable + path_sep):
-        return importer.for_package(path[len(executable + path_sep):].replace(path_sep, '.'))
-
-    raise ImportError(path)
-
-
-if YA_IDE_VENV:
-    sys.meta_path.append(importer)
-    sys.meta_path.append(BuiltinSubmoduleImporter)
-    if executable not in sys.path:
-        sys.path.append(executable)
-    sys.path_hooks.append(executable_path_hook)
-else:
-    sys.meta_path.insert(0, BuiltinSubmoduleImporter)
-    sys.meta_path.insert(0, importer)
-    if executable not in sys.path:
-        sys.path.insert(0, executable)
-    sys.path_hooks.insert(0, executable_path_hook)
-
-sys.path_importer_cache[executable] = importer
-
-# Indicator that modules and resources are built-in rather than on the file system.
-sys.is_standalone_binary = True
-sys.frozen = True
-
-# Set of names of importable modules.
-sys.extra_modules = importer.memory
-
-# Use custom implementation of traceback printer.
-# Built-in printer (PyTraceBack_Print) does not support custom module loaders
-sys.excepthook = excepthook
diff --git a/library/python/runtime_py3/main/get_py_main.cpp b/library/python/runtime_py3/main/get_py_main.cpp
deleted file mode 100644
index 67c400d4f42..00000000000
--- a/library/python/runtime_py3/main/get_py_main.cpp
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <library/cpp/resource/resource.h>
-
-#include <stdlib.h>
-
-extern "C" char* GetPyMain() {
-    TString res = NResource::Find("PY_MAIN");
-    return strdup(res.c_str());
-}
diff --git a/library/python/runtime_py3/main/main.c b/library/python/runtime_py3/main/main.c
deleted file mode 100644
index c2c90a3cf62..00000000000
--- a/library/python/runtime_py3/main/main.c
+++ /dev/null
@@ -1,235 +0,0 @@
-#include <Python.h>
-#include <contrib/tools/python3/src/Include/internal/pycore_runtime.h>  // _PyRuntime_Initialize()
-
-#include <stdlib.h>
-#include <string.h>
-#include <locale.h>
-
-void Py_InitArgcArgv(int argc, wchar_t **argv);
-char* GetPyMain();
-int IsYaIdeVenv();
-
-static const char* env_entry_point = "Y_PYTHON_ENTRY_POINT";
-static const char* env_bytes_warning = "Y_PYTHON_BYTES_WARNING";
-
-#ifdef _MSC_VER
-extern char** environ;
-
-void unsetenv(const char* name) {
-    const int n = strlen(name);
-    char** dst = environ;
-    for (char** src = environ; *src; src++)
-        if (strncmp(*src, name, n) || (*src)[n] != '=')
-            *dst++ = *src;
-    *dst = NULL;
-}
-#endif
-
-static int RunModule(const char *modname)
-{
-    PyObject *module, *runpy, *runmodule, *runargs, *result;
-    runpy = PyImport_ImportModule("runpy");
-    if (runpy == NULL) {
-        fprintf(stderr, "Could not import runpy module\n");
-        PyErr_Print();
-        return -1;
-    }
-    runmodule = PyObject_GetAttrString(runpy, "_run_module_as_main");
-    if (runmodule == NULL) {
-        fprintf(stderr, "Could not access runpy._run_module_as_main\n");
-        PyErr_Print();
-        Py_DECREF(runpy);
-        return -1;
-    }
-    module = PyUnicode_FromString(modname);
-    if (module == NULL) {
-        fprintf(stderr, "Could not convert module name to unicode\n");
-        PyErr_Print();
-        Py_DECREF(runpy);
-        Py_DECREF(runmodule);
-        return -1;
-    }
-    runargs = Py_BuildValue("(Oi)", module, 0);
-    if (runargs == NULL) {
-        fprintf(stderr,
-            "Could not create arguments for runpy._run_module_as_main\n");
-        PyErr_Print();
-        Py_DECREF(runpy);
-        Py_DECREF(runmodule);
-        Py_DECREF(module);
-        return -1;
-    }
-    result = PyObject_Call(runmodule, runargs, NULL);
-    if (result == NULL) {
-        PyErr_Print();
-    }
-    Py_DECREF(runpy);
-    Py_DECREF(runmodule);
-    Py_DECREF(module);
-    Py_DECREF(runargs);
-    if (result == NULL) {
-        return -1;
-    }
-    Py_DECREF(result);
-    return 0;
-}
-
-static int pymain(int argc, char** argv) {
-    if (IsYaIdeVenv()) {
-        return Py_BytesMain(argc, argv);
-    }
-    PyStatus status = _PyRuntime_Initialize();
-    if (PyStatus_Exception(status)) {
-        Py_ExitStatusException(status);
-    }
-
-    int i, sts = 1;
-    char* oldloc = NULL;
-    wchar_t** argv_copy = NULL;
-    /* We need a second copies, as Python might modify the first one. */
-    wchar_t** argv_copy2 = NULL;
-    char* entry_point_copy = NULL;
-
-    if (argc > 0) {
-        argv_copy = PyMem_RawMalloc(sizeof(wchar_t*) * argc);
-        argv_copy2 = PyMem_RawMalloc(sizeof(wchar_t*) * argc);
-        if (!argv_copy || !argv_copy2) {
-            fprintf(stderr, "out of memory\n");
-            goto error;
-        }
-    }
-
-    PyConfig config;
-    PyConfig_InitPythonConfig(&config);
-    config.pathconfig_warnings = 0;   /* Suppress errors from getpath.c */
-
-    const char* bytes_warning = getenv(env_bytes_warning);
-    if (bytes_warning) {
-        config.bytes_warning = atoi(bytes_warning);
-    }
-
-    oldloc = _PyMem_RawStrdup(setlocale(LC_ALL, NULL));
-    if (!oldloc) {
-        fprintf(stderr, "out of memory\n");
-        goto error;
-    }
-
-    setlocale(LC_ALL, "");
-    for (i = 0; i < argc; i++) {
-        argv_copy[i] = Py_DecodeLocale(argv[i], NULL);
-        argv_copy2[i] = argv_copy[i];
-        if (!argv_copy[i]) {
-            fprintf(stderr, "Unable to decode the command line argument #%i\n",
-                            i + 1);
-            argc = i;
-            goto error;
-        }
-    }
-    setlocale(LC_ALL, oldloc);
-    PyMem_RawFree(oldloc);
-    oldloc = NULL;
-
-    if (argc >= 1)
-        Py_SetProgramName(argv_copy[0]);
-
-    status = Py_InitializeFromConfig(&config);
-    PyConfig_Clear(&config);
-    if (PyStatus_Exception(status)) {
-        Py_ExitStatusException(status);
-    }
-
-    const char* entry_point = getenv(env_entry_point);
-    if (entry_point) {
-        entry_point_copy = strdup(entry_point);
-        if (!entry_point_copy) {
-            fprintf(stderr, "out of memory\n");
-            goto error;
-        }
-    } else {
-        entry_point_copy = GetPyMain();
-    }
-
-    if (entry_point_copy == NULL) {
-        fprintf(stderr, "No entry point, did you forget PY_MAIN?\n");
-        goto error;
-    }
-
-    if (entry_point_copy && !strcmp(entry_point_copy, ":main")) {
-        unsetenv(env_entry_point);
-        sts = Py_Main(argc, argv_copy);
-        free(entry_point_copy);
-        return sts;
-    }
-
-    Py_InitArgcArgv(argc, argv_copy);
-    PySys_SetArgv(argc, argv_copy);
-
-    {
-        PyObject* module = PyImport_ImportModule("library.python.runtime_py3.entry_points");
-        if (module == NULL) {
-            PyErr_Print();
-        } else {
-            PyObject* res = PyObject_CallMethod(module, "run_constructors", NULL);
-            if (res == NULL) {
-                PyErr_Print();
-            } else {
-                Py_DECREF(res);
-            }
-            Py_DECREF(module);
-        }
-    }
-
-    const char* module_name = entry_point_copy;
-    const char* func_name = NULL;
-
-    char *colon = strchr(entry_point_copy, ':');
-    if (colon != NULL) {
-        colon[0] = '\0';
-        func_name = colon + 1;
-    }
-    if (module_name[0] == '\0') {
-        module_name = "library.python.runtime_py3.entry_points";
-    }
-
-    if (!func_name) {
-        sts = RunModule(module_name);
-    } else {
-        PyObject* module = PyImport_ImportModule(module_name);
-
-        if (module == NULL) {
-            PyErr_Print();
-        } else {
-            PyObject* value = PyObject_CallMethod(module, func_name, NULL);
-
-            if (value == NULL) {
-                PyErr_Print();
-            } else {
-                Py_DECREF(value);
-                sts = 0;
-            }
-
-            Py_DECREF(module);
-        }
-    }
-
-    if (Py_FinalizeEx() < 0) {
-        sts = 120;
-    }
-
-error:
-    free(entry_point_copy);
-    PyMem_RawFree(argv_copy);
-    if (argv_copy2) {
-        for (i = 0; i < argc; i++)
-            PyMem_RawFree(argv_copy2[i]);
-        PyMem_RawFree(argv_copy2);
-    }
-    PyMem_RawFree(oldloc);
-    return sts;
-}
-
-int (*mainptr)(int argc, char** argv) = pymain;
-
-int main(int argc, char** argv) {
-    return mainptr(argc, argv);
-}
diff --git a/library/python/runtime_py3/main/venv.cpp b/library/python/runtime_py3/main/venv.cpp
deleted file mode 100644
index b26611b918d..00000000000
--- a/library/python/runtime_py3/main/venv.cpp
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <library/cpp/resource/resource.h>
-
-extern "C" int IsYaIdeVenv() {
-    TString dummy;
-    return NResource::FindExact("YA_IDE_VENV", &dummy);
-}
diff --git a/library/python/runtime_py3/sitecustomize.pyx b/library/python/runtime_py3/sitecustomize.pyx
deleted file mode 100644
index 966bbe8ba6b..00000000000
--- a/library/python/runtime_py3/sitecustomize.pyx
+++ /dev/null
@@ -1,69 +0,0 @@
-import re
-import sys
-
-import __res
-
-from importlib.abc import ResourceReader
-from importlib.metadata import Distribution, DistributionFinder, PackageNotFoundError, Prepared
-
-ResourceReader.register(__res._ResfsResourceReader)
-
-METADATA_NAME = re.compile('^Name: (.*)$', re.MULTILINE)
-
-
-class ArcadiaDistribution(Distribution):
-
-    def __init__(self, prefix):
-        self.prefix = prefix
-
-    def read_text(self, filename):
-        data = __res.resfs_read(f'{self.prefix}{filename}')
-        if data:
-            return data.decode('utf-8')
-    read_text.__doc__ = Distribution.read_text.__doc__
-
-    def locate_file(self, path):
-        return f'{self.prefix}{path}'
-
-
-class ArcadiaMetadataFinder(DistributionFinder):
-
-    prefixes = {}
-
-    @classmethod
-    def find_distributions(cls, context=DistributionFinder.Context()):
-        found = cls._search_prefixes(context.name)
-        return map(ArcadiaDistribution, found)
-
-    @classmethod
-    def _init_prefixes(cls):
-        cls.prefixes.clear()
-
-        for resource in __res.resfs_files():
-            resource = resource.decode('utf-8')
-            if not resource.endswith('METADATA'):
-                continue
-            data = __res.resfs_read(resource).decode('utf-8')
-            metadata_name = METADATA_NAME.search(data)
-            if metadata_name:
-                metadata_name = Prepared(metadata_name.group(1))
-                cls.prefixes[metadata_name.normalized] = resource[:-len('METADATA')]
-
-    @classmethod
-    def _search_prefixes(cls, name):
-        if not cls.prefixes:
-            cls._init_prefixes()
-
-        if name:
-            try:
-                yield cls.prefixes[Prepared(name).normalized]
-            except KeyError:
-                raise PackageNotFoundError(name)
-        else:
-            for prefix in sorted(cls.prefixes.values()):
-                yield prefix
-
-
-# monkeypatch standart library
-import importlib.metadata
-importlib.metadata.MetadataPathFinder = ArcadiaMetadataFinder
diff --git a/library/python/runtime_py3/test/.dist-info/METADATA b/library/python/runtime_py3/test/.dist-info/METADATA
deleted file mode 100644
index bb361621993..00000000000
--- a/library/python/runtime_py3/test/.dist-info/METADATA
+++ /dev/null
@@ -1,14 +0,0 @@
-Metadata-Version: 2.1
-Name: foo-bar
-Version: 1.2.3
-Summary: 
-Home-page: https://foo.org/
-Author: Foo
-Author-email: foo@ya.com
-License: UNKNOWN
-Platform: any
-Classifier: Development Status :: 4 - Beta
-Classifier: Programming Language :: Python :: 3
-Requires-Python: >=3.8
-Requires-Dist: Werkzeug (>=0.15)
-Requires-Dist: Jinja2 (>=2.10.1)
diff --git a/library/python/runtime_py3/test/.dist-info/RECORD b/library/python/runtime_py3/test/.dist-info/RECORD
deleted file mode 100644
index dabbbff80d9..00000000000
--- a/library/python/runtime_py3/test/.dist-info/RECORD
+++ /dev/null
@@ -1 +0,0 @@
-foo_bar.py,sha256=0000000000000000000000000000000000000000000,20
diff --git a/library/python/runtime_py3/test/.dist-info/entry_points.txt b/library/python/runtime_py3/test/.dist-info/entry_points.txt
deleted file mode 100644
index f5e2fd2657b..00000000000
--- a/library/python/runtime_py3/test/.dist-info/entry_points.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-[console_scripts]
-foo_cli = foo_bar:cli
diff --git a/library/python/runtime_py3/test/.dist-info/top_level.txt b/library/python/runtime_py3/test/.dist-info/top_level.txt
deleted file mode 100644
index d2c068bc6be..00000000000
--- a/library/python/runtime_py3/test/.dist-info/top_level.txt
+++ /dev/null
@@ -1 +0,0 @@
-foo_bar
diff --git a/library/python/runtime_py3/test/canondata/result.json b/library/python/runtime_py3/test/canondata/result.json
deleted file mode 100644
index 8e684deb433..00000000000
--- a/library/python/runtime_py3/test/canondata/result.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-    "test_traceback.test_traceback[custom-default]": {
-        "stderr": {
-            "uri": "file://test_traceback.test_traceback_custom-default_/stderr.txt"
-        },
-        "stdout": {
-            "uri": "file://test_traceback.test_traceback_custom-default_/stdout.txt"
-        }
-    },
-    "test_traceback.test_traceback[custom-ultratb_color]": {
-        "stderr": {
-            "uri": "file://test_traceback.test_traceback_custom-ultratb_color_/stderr.txt"
-        },
-        "stdout": {
-            "uri": "file://test_traceback.test_traceback_custom-ultratb_color_/stdout.txt"
-        }
-    },
-    "test_traceback.test_traceback[custom-ultratb_verbose]": {
-        "stderr": {
-            "uri": "file://test_traceback.test_traceback_custom-ultratb_verbose_/stderr.txt"
-        },
-        "stdout": {
-            "uri": "file://test_traceback.test_traceback_custom-ultratb_verbose_/stdout.txt"
-        }
-    },
-    "test_traceback.test_traceback[main-default]": {
-        "stderr": {
-            "uri": "file://test_traceback.test_traceback_main-default_/stderr.txt"
-        },
-        "stdout": {
-            "uri": "file://test_traceback.test_traceback_main-default_/stdout.txt"
-        }
-    },
-    "test_traceback.test_traceback[main-ultratb_color]": {
-        "stderr": {
-            "uri": "file://test_traceback.test_traceback_main-ultratb_color_/stderr.txt"
-        },
-        "stdout": {
-            "uri": "file://test_traceback.test_traceback_main-ultratb_color_/stdout.txt"
-        }
-    },
-    "test_traceback.test_traceback[main-ultratb_verbose]": {
-        "stderr": {
-            "uri": "file://test_traceback.test_traceback_main-ultratb_verbose_/stderr.txt"
-        },
-        "stdout": {
-            "uri": "file://test_traceback.test_traceback_main-ultratb_verbose_/stdout.txt"
-        }
-    }
-}
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-default_/stderr.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-default_/stderr.txt
deleted file mode 100644
index 5eb7da170ad..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-default_/stderr.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-Traceback (most recent call last):
-  File "library/python/runtime_py3/test/traceback/crash.py", line 44, in main
-    one()
-  File "library/python/runtime_py3/test/traceback/crash.py", line 12, in one
-    modfunc(two)  # aaa
-  File "library/python/runtime_py3/test/traceback/mod/__init__.py", line 3, in modfunc
-    f()  # call back to caller
-  File "library/python/runtime_py3/test/traceback/crash.py", line 16, in two
-    three(42)
-  File "library/python/runtime_py3/test/traceback/crash.py", line 20, in three
-    raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-RuntimeError: Kaboom! I'm dead: 42
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-default_/stdout.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-default_/stdout.txt
deleted file mode 100644
index 2c9793eb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-default_/stdout.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-__name__ = library.python.runtime_py3.test.traceback.crash
-__file__ = library/python/runtime_py3/test/traceback/crash.py
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_color_/stderr.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_color_/stderr.txt
deleted file mode 100644
index af1c19fb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_color_/stderr.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-Traceback (most recent call last):
-  File library/python/runtime_py3/test/traceback/crash.py:44 in main
-    one()
-  File library/python/runtime_py3/test/traceback/crash.py:12 in one
-    modfunc(two)  # aaa
-  File library/python/runtime_py3/test/traceback/mod/__init__.py:3 in modfunc
-    f()  # call back to caller
-  File library/python/runtime_py3/test/traceback/crash.py:16 in two
-    three(42)
-  File library/python/runtime_py3/test/traceback/crash.py:20 in three
-    raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-RuntimeError: Kaboom! I'm dead: 42
-
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_color_/stdout.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_color_/stdout.txt
deleted file mode 100644
index 2c9793eb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_color_/stdout.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-__name__ = library.python.runtime_py3.test.traceback.crash
-__file__ = library/python/runtime_py3/test/traceback/crash.py
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_verbose_/stderr.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_verbose_/stderr.txt
deleted file mode 100644
index d301e8ab4f0..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_verbose_/stderr.txt
+++ /dev/null
@@ -1,27 +0,0 @@
----------------------------------------------------------------------------
-RuntimeError                              Traceback (most recent call last)
-File library/python/runtime_py3/test/traceback/crash.py:44, in main()
-     41 time.time = lambda: 1531996624.0  # Freeze time
-     42 sys.executable = '<traceback test>'
----> 44 one()
-
-File library/python/runtime_py3/test/traceback/crash.py:12, in one()
-     11 def one():
----> 12     modfunc(two)
-
-File library/python/runtime_py3/test/traceback/mod/__init__.py:3, in modfunc(f=<function two>)
-      1 def modfunc(f):
-      2     # lalala
-----> 3     f()
-        f = <function two>
-
-File library/python/runtime_py3/test/traceback/crash.py:16, in two()
-     15 def two():
----> 16     three(42)
-
-File library/python/runtime_py3/test/traceback/crash.py:20, in three(x=42)
-     19 def three(x):
----> 20     raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-        x = 42
-
-RuntimeError: Kaboom! I'm dead: 42
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_verbose_/stdout.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_verbose_/stdout.txt
deleted file mode 100644
index 2c9793eb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_custom-ultratb_verbose_/stdout.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-__name__ = library.python.runtime_py3.test.traceback.crash
-__file__ = library/python/runtime_py3/test/traceback/crash.py
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-default_/stderr.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-default_/stderr.txt
deleted file mode 100644
index 5eb7da170ad..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-default_/stderr.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-Traceback (most recent call last):
-  File "library/python/runtime_py3/test/traceback/crash.py", line 44, in main
-    one()
-  File "library/python/runtime_py3/test/traceback/crash.py", line 12, in one
-    modfunc(two)  # aaa
-  File "library/python/runtime_py3/test/traceback/mod/__init__.py", line 3, in modfunc
-    f()  # call back to caller
-  File "library/python/runtime_py3/test/traceback/crash.py", line 16, in two
-    three(42)
-  File "library/python/runtime_py3/test/traceback/crash.py", line 20, in three
-    raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-RuntimeError: Kaboom! I'm dead: 42
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-default_/stdout.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-default_/stdout.txt
deleted file mode 100644
index 2c9793eb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-default_/stdout.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-__name__ = library.python.runtime_py3.test.traceback.crash
-__file__ = library/python/runtime_py3/test/traceback/crash.py
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_color_/stderr.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_color_/stderr.txt
deleted file mode 100644
index af1c19fb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_color_/stderr.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-Traceback (most recent call last):
-  File library/python/runtime_py3/test/traceback/crash.py:44 in main
-    one()
-  File library/python/runtime_py3/test/traceback/crash.py:12 in one
-    modfunc(two)  # aaa
-  File library/python/runtime_py3/test/traceback/mod/__init__.py:3 in modfunc
-    f()  # call back to caller
-  File library/python/runtime_py3/test/traceback/crash.py:16 in two
-    three(42)
-  File library/python/runtime_py3/test/traceback/crash.py:20 in three
-    raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-RuntimeError: Kaboom! I'm dead: 42
-
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_color_/stdout.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_color_/stdout.txt
deleted file mode 100644
index 2c9793eb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_color_/stdout.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-__name__ = library.python.runtime_py3.test.traceback.crash
-__file__ = library/python/runtime_py3/test/traceback/crash.py
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_verbose_/stderr.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_verbose_/stderr.txt
deleted file mode 100644
index d301e8ab4f0..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_verbose_/stderr.txt
+++ /dev/null
@@ -1,27 +0,0 @@
----------------------------------------------------------------------------
-RuntimeError                              Traceback (most recent call last)
-File library/python/runtime_py3/test/traceback/crash.py:44, in main()
-     41 time.time = lambda: 1531996624.0  # Freeze time
-     42 sys.executable = '<traceback test>'
----> 44 one()
-
-File library/python/runtime_py3/test/traceback/crash.py:12, in one()
-     11 def one():
----> 12     modfunc(two)
-
-File library/python/runtime_py3/test/traceback/mod/__init__.py:3, in modfunc(f=<function two>)
-      1 def modfunc(f):
-      2     # lalala
-----> 3     f()
-        f = <function two>
-
-File library/python/runtime_py3/test/traceback/crash.py:16, in two()
-     15 def two():
----> 16     three(42)
-
-File library/python/runtime_py3/test/traceback/crash.py:20, in three(x=42)
-     19 def three(x):
----> 20     raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-        x = 42
-
-RuntimeError: Kaboom! I'm dead: 42
diff --git a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_verbose_/stdout.txt b/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_verbose_/stdout.txt
deleted file mode 100644
index 2c9793eb147..00000000000
--- a/library/python/runtime_py3/test/canondata/test_traceback.test_traceback_main-ultratb_verbose_/stdout.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-__name__ = library.python.runtime_py3.test.traceback.crash
-__file__ = library/python/runtime_py3/test/traceback/crash.py
diff --git a/library/python/runtime_py3/test/resources/__init__.py b/library/python/runtime_py3/test/resources/__init__.py
deleted file mode 100644
index e69de29bb2d..00000000000
--- a/library/python/runtime_py3/test/resources/__init__.py
+++ /dev/null
diff --git a/library/python/runtime_py3/test/resources/foo.txt b/library/python/runtime_py3/test/resources/foo.txt
deleted file mode 100644
index ba0e162e1c4..00000000000
--- a/library/python/runtime_py3/test/resources/foo.txt
+++ /dev/null
@@ -1 +0,0 @@
-bar
\ No newline at end of file
diff --git a/library/python/runtime_py3/test/resources/submodule/__init__.py b/library/python/runtime_py3/test/resources/submodule/__init__.py
deleted file mode 100644
index e69de29bb2d..00000000000
--- a/library/python/runtime_py3/test/resources/submodule/__init__.py
+++ /dev/null
diff --git a/library/python/runtime_py3/test/resources/submodule/bar.txt b/library/python/runtime_py3/test/resources/submodule/bar.txt
deleted file mode 100644
index 19102815663..00000000000
--- a/library/python/runtime_py3/test/resources/submodule/bar.txt
+++ /dev/null
@@ -1 +0,0 @@
-foo
\ No newline at end of file
diff --git a/library/python/runtime_py3/test/test_arcadia_source_finder.py b/library/python/runtime_py3/test/test_arcadia_source_finder.py
deleted file mode 100644
index 09ade19043c..00000000000
--- a/library/python/runtime_py3/test/test_arcadia_source_finder.py
+++ /dev/null
@@ -1,344 +0,0 @@
-import stat
-import unittest
-import yaml
-from collections import namedtuple
-from unittest.mock import patch
-from parameterized import parameterized
-
-import __res as res
-
-
-NAMESPACE_PREFIX = b'py/namespace/'
-TEST_SOURCE_ROOT = '/home/arcadia'
-
-
-class ImporterMocks(object):
-    def __init__(self, mock_fs, mock_resources):
-        self._mock_fs = mock_fs
-        self._mock_resources = mock_resources
-        self._patchers = [
-            patch('__res.iter_keys', wraps=self._iter_keys),
-            patch('__res.__resource.find', wraps=self._resource_find),
-            patch('__res._path_isfile', wraps=self._path_isfile),
-            patch('__res._os.listdir', wraps=self._os_listdir),
-            patch('__res._os.lstat', wraps=self._os_lstat),
-        ]
-        for patcher in self._patchers:
-            patcher.start()
-
-    def stop(self):
-        for patcher in self._patchers:
-            patcher.stop()
-
-    def _iter_keys(self, prefix):
-        assert prefix == NAMESPACE_PREFIX
-        l = len(prefix)
-        for k in self._mock_resources.keys():
-            yield k, k[l:]
-
-    def _resource_find(self, key):
-        return self._mock_resources.get(key)
-
-    def _lookup_mock_fs(self, filename):
-        path = filename.lstrip('/').split('/')
-        curdir = self._mock_fs
-        for item in path:
-            if item in curdir:
-                curdir = curdir[item]
-            else:
-                return None
-        return curdir
-
-    def _path_isfile(self, filename):
-        f = self._lookup_mock_fs(filename)
-        return isinstance(f, str)
-
-    def _os_lstat(self, filename):
-        f = self._lookup_mock_fs(filename)
-        mode = stat.S_IFDIR if isinstance(f, dict) else stat.S_IFREG
-        return namedtuple('fake_stat_type', 'st_mode')(st_mode=mode)
-
-    def _os_listdir(self, dirname):
-        f = self._lookup_mock_fs(dirname)
-        if isinstance(f, dict):
-            return f.keys()
-        else:
-            return []
-
-
-class ArcadiaSourceFinderTestCase(unittest.TestCase):
-    def setUp(self):
-        self.import_mock = ImporterMocks(yaml.safe_load(self._get_mock_fs()), self._get_mock_resources())
-        self.arcadia_source_finder = res.ArcadiaSourceFinder(TEST_SOURCE_ROOT)
-
-    def tearDown(self):
-        self.import_mock.stop()
-
-    def _get_mock_fs(self):
-        raise NotImplementedError()
-
-    def _get_mock_resources(self):
-        raise NotImplementedError()
-
-
-class TestLibraryWithoutNamespace(ArcadiaSourceFinderTestCase):
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               project:
-                 lib:
-                   mod1.py: ""
-                   package1:
-                     mod2.py: ""
-        '''
-
-    def _get_mock_resources(self):
-        return {
-            b'py/namespace/unique_prefix1/project/lib': b'project.lib.',
-        }
-
-    @parameterized.expand([
-        ('project.lib.mod1', b'project/lib/mod1.py'),
-        ('project.lib.package1.mod2', b'project/lib/package1/mod2.py'),
-        ('project.lib.unknown_module', None),
-        ('project.lib', None),  # package
-    ])
-    def test_get_module_path(self, module, path):
-        assert path == self.arcadia_source_finder.get_module_path(module)
-
-    @parameterized.expand([
-        ('project.lib.mod1', False),
-        ('project.lib.package1.mod2', False),
-        ('project', True),
-        ('project.lib', True),
-        ('project.lib.package1', True),
-    ])
-    def test_is_packages(self, module, is_package):
-        assert is_package == self.arcadia_source_finder.is_package(module)
-
-    def test_is_package_for_unknown_module(self):
-        self.assertRaises(ImportError, lambda: self.arcadia_source_finder.is_package('project.lib.package2'))
-
-    @parameterized.expand([
-        ('', {
-            ('PFX.project', True),
-        }),
-        ('project.', {
-            ('PFX.lib', True),
-        }),
-        ('project.lib.', {
-            ('PFX.mod1', False),
-            ('PFX.package1', True),
-        }),
-        ('project.lib.package1.', {
-            ('PFX.mod2', False),
-        }),
-    ])
-    def test_iter_modules(self, package_prefix, expected):
-        got = self.arcadia_source_finder.iter_modules(package_prefix, 'PFX.')
-        assert expected == set(got)
-
-    # Check iter_modules() don't crash and return correct result after not existing module was requested
-    def test_iter_modules_after_unknown_module_import(self):
-        self.arcadia_source_finder.get_module_path('project.unknown_module')
-        assert {('lib', True)} == set(self.arcadia_source_finder.iter_modules('project.', ''))
-
-
-class TestLibraryExtendedFromAnotherLibrary(ArcadiaSourceFinderTestCase):
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               project:
-                 lib:
-                   mod1.py: ''
-                 lib_extension:
-                   mod2.py: ''
-        '''
-
-    def _get_mock_resources(self):
-        return {
-            b'py/namespace/unique_prefix1/project/lib': b'project.lib.',
-            b'py/namespace/unique_prefix2/project/lib_extension': b'project.lib.',
-        }
-
-    @parameterized.expand([
-        ('project.lib.mod1', b'project/lib/mod1.py'),
-        ('project.lib.mod2', b'project/lib_extension/mod2.py'),
-    ])
-    def test_get_module_path(self, module, path):
-        assert path == self.arcadia_source_finder.get_module_path(module)
-
-    @parameterized.expand([
-        ('project.lib.', {
-            ('PFX.mod1', False),
-            ('PFX.mod2', False),
-        }),
-    ])
-    def test_iter_modules(self, package_prefix, expected):
-        got = self.arcadia_source_finder.iter_modules(package_prefix, 'PFX.')
-        assert expected == set(got)
-
-
-class TestNamespaceAndTopLevelLibraries(ArcadiaSourceFinderTestCase):
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               project:
-                 ns_lib:
-                   mod1.py: ''
-                 top_level_lib:
-                   mod2.py: ''
-        '''
-
-    def _get_mock_resources(self):
-        return {
-            b'py/namespace/unique_prefix1/project/ns_lib': b'ns.',
-            b'py/namespace/unique_prefix2/project/top_level_lib': b'.',
-        }
-
-    @parameterized.expand([
-        ('ns.mod1', b'project/ns_lib/mod1.py'),
-        ('mod2', b'project/top_level_lib/mod2.py'),
-    ])
-    def test_get_module_path(self, module, path):
-        assert path == self.arcadia_source_finder.get_module_path(module)
-
-    @parameterized.expand([
-        ('ns', True),
-        ('ns.mod1', False),
-        ('mod2', False),
-    ])
-    def test_is_packages(self, module, is_package):
-        assert is_package == self.arcadia_source_finder.is_package(module)
-
-    @parameterized.expand([
-        'project',
-        'project.ns_lib',
-        'project.top_level_lib',
-    ])
-    def test_is_package_for_unknown_modules(self, module):
-        self.assertRaises(ImportError, lambda: self.arcadia_source_finder.is_package(module))
-
-    @parameterized.expand([
-        ('', {
-            ('PFX.ns', True),
-            ('PFX.mod2', False),
-        }),
-        ('ns.', {
-            ('PFX.mod1', False),
-        }),
-    ])
-    def test_iter_modules(self, package_prefix, expected):
-        got = self.arcadia_source_finder.iter_modules(package_prefix, 'PFX.')
-        assert expected == set(got)
-
-
-class TestIgnoreDirectoriesWithYaMakeFile(ArcadiaSourceFinderTestCase):
-    ''' Packages and modules from tests should not be part of pylib namespace '''
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               contrib:
-                 python:
-                   pylib:
-                     mod1.py: ""
-                     tests:
-                       conftest.py: ""
-                       ya.make: ""
-        '''
-
-    def _get_mock_resources(self):
-        return {
-            b'py/namespace/unique_prefix1/contrib/python/pylib': b'pylib.',
-        }
-
-    def test_get_module_path_for_lib(self):
-        assert b'contrib/python/pylib/mod1.py' == self.arcadia_source_finder.get_module_path('pylib.mod1')
-
-    def test_get_module_for_tests(self):
-        assert self.arcadia_source_finder.get_module_path('pylib.tests.conftest') is None
-
-    def test_is_package_for_tests(self):
-        self.assertRaises(ImportError, lambda: self.arcadia_source_finder.is_package('pylib.tests'))
-
-
-class TestMergingNamespaceAndDirectoryPackages(ArcadiaSourceFinderTestCase):
-    ''' Merge parent package (top level in this test) dirs with namespace dirs (DEVTOOLS-8979) '''
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               contrib:
-                 python:
-                   pylint:
-                     ya.make: ""
-                     pylint:
-                       __init__.py: ""
-                     patcher:
-                       patch.py: ""
-                       ya.make: ""
-        '''
-
-    def _get_mock_resources(self):
-        return {
-            b'py/namespace/unique_prefix1/contrib/python/pylint': b'.',
-            b'py/namespace/unique_prefix1/contrib/python/pylint/patcher': b'pylint.',
-        }
-
-    @parameterized.expand([
-        ('pylint.__init__', b'contrib/python/pylint/pylint/__init__.py'),
-        ('pylint.patch', b'contrib/python/pylint/patcher/patch.py'),
-    ])
-    def test_get_module_path(self, module, path):
-        assert path == self.arcadia_source_finder.get_module_path(module)
-
-
-class TestEmptyResources(ArcadiaSourceFinderTestCase):
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               project:
-                 lib:
-                   mod1.py: ''
-        '''
-
-    def _get_mock_resources(self):
-        return {}
-
-    def test_get_module_path(self):
-        assert self.arcadia_source_finder.get_module_path('project.lib.mod1') is None
-
-    def test_is_package(self):
-        self.assertRaises(ImportError, lambda: self.arcadia_source_finder.is_package('project'))
-
-    def test_iter_modules(self):
-        assert [] == list(self.arcadia_source_finder.iter_modules('', 'PFX.'))
-
-
-class TestDictionaryChangedSizeDuringIteration(ArcadiaSourceFinderTestCase):
-    def _get_mock_fs(self):
-        return '''
-           home:
-             arcadia:
-               project:
-                 lib1:
-                   mod1.py: ''
-                 lib2:
-                   mod2.py: ''
-        '''
-
-    def _get_mock_resources(self):
-        return {
-            b'py/namespace/unique_prefix1/project/lib1': b'project.lib1.',
-            b'py/namespace/unique_prefix1/project/lib2': b'project.lib2.',
-        }
-
-    def test_no_crash_on_recusive_iter_modules(self):
-        for package in self.arcadia_source_finder.iter_modules('project.', ''):
-            for _ in self.arcadia_source_finder.iter_modules(package[0], ''):
-                pass
diff --git a/library/python/runtime_py3/test/test_metadata.py b/library/python/runtime_py3/test/test_metadata.py
deleted file mode 100644
index 686c176468e..00000000000
--- a/library/python/runtime_py3/test/test_metadata.py
+++ /dev/null
@@ -1,44 +0,0 @@
-import importlib.metadata as im
-
-import pytest
-
-
-@pytest.mark.parametrize("name", ("foo-bar", "foo_bar", "Foo-Bar"))
-def test_distribution(name):
-    assert im.distribution(name) is not None
-
-
-def test_unknown_package():
-    with pytest.raises(im.PackageNotFoundError):
-        im.distribution("bar")
-
-
-def test_version():
-    assert im.version("foo-bar") == "1.2.3"
-
-
-def test_metadata():
-    assert im.metadata("foo-bar") is not None
-
-
-def test_files():
-    files = im.files("foo-bar")
-    assert len(files) == 1
-    assert files[0].name == "foo_bar.py"
-    assert files[0].size == 20
-
-
-def test_requires():
-    assert im.requires("foo-bar") == ["Werkzeug (>=0.15)", "Jinja2 (>=2.10.1)"]
-
-
-def test_entry_points():
-    entry_points = im.entry_points()
-    assert "console_scripts" in entry_points
-
-    flg_found = False
-    for entry_point in entry_points["console_scripts"]:
-        if entry_point.name == "foo_cli" and entry_point.value == "foo_bar:cli":
-            flg_found = True
-
-    assert flg_found
diff --git a/library/python/runtime_py3/test/test_resources.py b/library/python/runtime_py3/test/test_resources.py
deleted file mode 100644
index a269329f42c..00000000000
--- a/library/python/runtime_py3/test/test_resources.py
+++ /dev/null
@@ -1,60 +0,0 @@
-# -*- coding: utf-8 -*-
-
-import importlib.resources as ir
-
-import pytest
-
-
-@pytest.mark.parametrize("package, resource", (
-    ("resources", "foo.txt"),
-    ("resources.submodule", "bar.txt")
-))
-def test_is_resource_good_path(package, resource):
-    assert ir.is_resource(package, resource)
-
-
-@pytest.mark.parametrize("package, resource", (
-    ("resources", "111.txt"),
-    ("resources.submodule", "222.txt")
-))
-def test_is_resource_missing(package, resource):
-    assert not ir.is_resource(package, resource)
-
-
-def test_is_resource_subresource_directory():
-    # Directories are not resources.
-    assert not ir.is_resource("resources", "submodule")
-
-
-@pytest.mark.parametrize("package, resource, expected", (
-    ("resources", "foo.txt", b"bar"),
-    ("resources.submodule", "bar.txt", b"foo")
-))
-def test_read_binary_good_path(package, resource, expected):
-    assert ir.read_binary(package, resource) == expected
-
-
-def test_read_binary_missing():
-    with pytest.raises(FileNotFoundError):
-        ir.read_binary("resources", "111.txt")
-
-
-@pytest.mark.parametrize("package, resource, expected", (
-    ("resources", "foo.txt", "bar"),
-    ("resources.submodule", "bar.txt", "foo")
-))
-def test_read_text_good_path(package, resource, expected):
-    assert ir.read_text(package, resource) == expected
-
-
-def test_read_text_missing():
-    with pytest.raises(FileNotFoundError):
-        ir.read_text("resources", "111.txt")
-
-
-@pytest.mark.parametrize("package, expected", (
-    ("resources", ["submodule", "foo.txt"]),
-    ("resources.submodule", ["bar.txt"])
-))
-def test_contents_good_path(package, expected):
-    assert sorted(ir.contents(package)) == sorted(expected)
diff --git a/library/python/runtime_py3/test/test_traceback.py b/library/python/runtime_py3/test/test_traceback.py
deleted file mode 100644
index 82087ce98a6..00000000000
--- a/library/python/runtime_py3/test/test_traceback.py
+++ /dev/null
@@ -1,63 +0,0 @@
-# -*- coding: utf-8 -*-
-
-from __future__ import print_function, absolute_import, division
-
-import os
-import re
-
-import pytest
-
-import yatest.common as yc
-
-
-def clean_traceback(traceback):
-    traceback = re.sub(br'\033\[(\d|;)+?m', b'', traceback)  # strip ANSI codes
-    traceback = re.sub(br' at 0x[0-9a-fA-F]+', b'', traceback)  # remove object ids
-    return traceback
-
-
-@pytest.mark.parametrize('mode', [
-    'default',
-    'ultratb_color',
-    'ultratb_verbose',
-])
-@pytest.mark.parametrize('entry_point', [
-    'main',
-    'custom',
-])
-def test_traceback(mode, entry_point):
-    tb_tool = yc.build_path('library/python/runtime_py3/test/traceback/traceback')
-    stdout_path = yc.test_output_path('stdout_raw.txt')
-    stderr_path = yc.test_output_path('stderr_raw.txt')
-    filtered_stdout_path = yc.test_output_path('stdout.txt')
-    filtered_stderr_path = yc.test_output_path('stderr.txt')
-
-    env = os.environ.copy()
-    env.pop('PYTHONPATH', None)  # Do not let program peek into its sources on filesystem
-    if entry_point == 'custom':
-        env['Y_PYTHON_ENTRY_POINT'] = 'library.python.runtime_py3.test.traceback.crash:main'
-
-    proc = yc.execute(
-        command=[tb_tool, mode],
-        env=env,
-        stdout=stdout_path,
-        stderr=stderr_path,
-        check_exit_code=False,
-    )
-
-    with open(filtered_stdout_path, 'wb') as f:
-        f.write(clean_traceback(proc.std_out))
-
-    with open(filtered_stderr_path, 'wb') as f:
-        f.write(clean_traceback(proc.std_err))
-
-    return {
-        'stdout': yc.canonical_file(
-            filtered_stdout_path,
-            local=True,
-        ),
-        'stderr': yc.canonical_file(
-            filtered_stderr_path,
-            local=True,
-        ),
-    }
diff --git a/library/python/runtime_py3/test/traceback/__main__.py b/library/python/runtime_py3/test/traceback/__main__.py
deleted file mode 100644
index 364db169f09..00000000000
--- a/library/python/runtime_py3/test/traceback/__main__.py
+++ /dev/null
@@ -1,4 +0,0 @@
-from library.python.runtime_py3.test.traceback.crash import main
-
-if __name__ == "__main__":
-    main()
diff --git a/library/python/runtime_py3/test/traceback/crash.py b/library/python/runtime_py3/test/traceback/crash.py
deleted file mode 100644
index b5e36b3dd46..00000000000
--- a/library/python/runtime_py3/test/traceback/crash.py
+++ /dev/null
@@ -1,44 +0,0 @@
-import argparse
-import cgitb
-import sys
-import time
-
-from IPython.core import ultratb
-
-from .mod import modfunc
-
-
-def one():
-    modfunc(two)  # aaa
-
-
-def two():
-    three(42)
-
-
-def three(x):
-    raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
-
-
-def main():
-    hooks = {
-        'default': lambda: sys.excepthook,
-        'cgitb': lambda: cgitb.Hook(format='text'),
-        'ultratb_color': lambda: ultratb.ColorTB(ostream=sys.stderr),
-        'ultratb_verbose': lambda: ultratb.VerboseTB(ostream=sys.stderr),
-    }
-
-    parser = argparse.ArgumentParser()
-    parser.add_argument('hook', choices=sorted(hooks), default='default')
-
-    args = parser.parse_args()
-
-    sys.excepthook = hooks[args.hook]()
-
-    print('__name__ =', __name__)
-    print('__file__ =', __file__)
-
-    time.time = lambda: 1531996624.0  # Freeze time
-    sys.executable = '<traceback test>'
-
-    one()
diff --git a/library/python/runtime_py3/test/traceback/mod/__init__.py b/library/python/runtime_py3/test/traceback/mod/__init__.py
deleted file mode 100644
index f00843d7861..00000000000
--- a/library/python/runtime_py3/test/traceback/mod/__init__.py
+++ /dev/null
@@ -1,3 +0,0 @@
-def modfunc(f):
-    # lalala
-    f()  # call back to caller
diff --git a/library/python/strings/ut/test_strings.py b/library/python/strings/ut/test_strings.py
deleted file mode 100644
index dd0c694ee1d..00000000000
--- a/library/python/strings/ut/test_strings.py
+++ /dev/null
@@ -1,205 +0,0 @@
-# coding=utf-8
-
-import pytest
-import six
-
-import library.python.strings
-
-
-class Convertible(object):
-    text = u'текст'
-    text_utf8 = text.encode('utf-8')
-
-    def __unicode__(self):
-        return self.text
-
-    def __str__(self):
-        return self.text_utf8
-
-
-class ConvertibleToUnicodeOnly(Convertible):
-    def __str__(self):
-        return self.text.encode('ascii')
-
-
-class ConvertibleToStrOnly(Convertible):
-    def __unicode__(self):
-        return self.text_utf8.decode('ascii')
-
-
-class NonConvertible(ConvertibleToUnicodeOnly, ConvertibleToStrOnly):
-    pass
-
-
-def test_to_basestring():
-    assert library.python.strings.to_basestring('str') == 'str'
-    assert library.python.strings.to_basestring(u'юникод') == u'юникод'
-    if six.PY2:  # __str__ should return str not bytes in Python3
-        assert library.python.strings.to_basestring(Convertible()) == Convertible.text
-        assert library.python.strings.to_basestring(ConvertibleToUnicodeOnly()) == Convertible.text
-        assert library.python.strings.to_basestring(ConvertibleToStrOnly()) == Convertible.text_utf8
-        assert library.python.strings.to_basestring(NonConvertible())
-
-
-def test_to_unicode():
-    assert library.python.strings.to_unicode(u'юникод') == u'юникод'
-    assert library.python.strings.to_unicode('str') == u'str'
-    assert library.python.strings.to_unicode(u'строка'.encode('utf-8')) == u'строка'
-    assert library.python.strings.to_unicode(u'строка'.encode('cp1251'), 'cp1251') == u'строка'
-    if six.PY2:  # __str__ should return str not bytes in Python3
-        assert library.python.strings.to_unicode(Convertible()) == Convertible.text
-        assert library.python.strings.to_unicode(ConvertibleToUnicodeOnly()) == Convertible.text
-        with pytest.raises(UnicodeDecodeError):
-            library.python.strings.to_unicode(ConvertibleToStrOnly())
-        with pytest.raises(UnicodeDecodeError):
-            library.python.strings.to_unicode(NonConvertible())
-
-
-def test_to_unicode_errors_replace():
-    assert library.python.strings.to_unicode(u'abcабв'.encode('utf-8'), 'ascii')
-    assert library.python.strings.to_unicode(u'абв'.encode('utf-8'), 'ascii')
-
-
-def test_to_str():
-    assert library.python.strings.to_str('str') == 'str' if six.PY2 else b'str'
-    assert library.python.strings.to_str(u'unicode') == 'unicode' if six.PY2 else b'unicode'
-    assert library.python.strings.to_str(u'юникод') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод', 'cp1251') == u'юникод'.encode('cp1251')
-    if six.PY2:
-        assert library.python.strings.to_str(Convertible()) == Convertible.text_utf8
-        with pytest.raises(UnicodeEncodeError):
-            library.python.strings.to_str(ConvertibleToUnicodeOnly())
-        assert library.python.strings.to_str(ConvertibleToStrOnly()) == Convertible.text_utf8
-        with pytest.raises(UnicodeEncodeError):
-            library.python.strings.to_str(NonConvertible())
-
-
-def test_to_str_errors_replace():
-    assert library.python.strings.to_str(u'abcабв', 'ascii')
-    assert library.python.strings.to_str(u'абв', 'ascii')
-
-
-def test_to_str_transcode():
-    assert library.python.strings.to_str('str', from_enc='ascii') == 'str' if six.PY2 else b'str'
-    assert library.python.strings.to_str('str', from_enc='utf-8') == 'str' if six.PY2 else b'str'
-
-    assert library.python.strings.to_str(u'юникод'.encode('utf-8'), from_enc='utf-8') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод'.encode('utf-8'), to_enc='utf-8', from_enc='utf-8') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод'.encode('utf-8'), to_enc='cp1251', from_enc='utf-8') == u'юникод'.encode('cp1251')
-
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), from_enc='cp1251') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), to_enc='cp1251', from_enc='cp1251') == u'юникод'.encode('cp1251')
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), to_enc='utf-8', from_enc='cp1251') == u'юникод'.encode('utf-8')
-
-    assert library.python.strings.to_str(u'юникод'.encode('koi8-r'), from_enc='koi8-r') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод'.encode('koi8-r'), to_enc='koi8-r', from_enc='koi8-r') == u'юникод'.encode('koi8-r')
-    assert library.python.strings.to_str(u'юникод'.encode('koi8-r'), to_enc='cp1251', from_enc='koi8-r') == u'юникод'.encode('cp1251')
-
-
-def test_to_str_transcode_wrong():
-    assert library.python.strings.to_str(u'юникод'.encode('utf-8'), from_enc='cp1251')
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), from_enc='utf-8')
-
-
-def test_to_str_transcode_disabled():
-    # No transcoding enabled, set from_enc to enable
-    assert library.python.strings.to_str(u'юникод'.encode('utf-8'), to_enc='utf-8') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод'.encode('utf-8'), to_enc='cp1251') == u'юникод'.encode('utf-8')
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), to_enc='utf-8') == u'юникод'.encode('cp1251')
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), to_enc='cp1251') == u'юникод'.encode('cp1251')
-    assert library.python.strings.to_str(u'юникод'.encode('cp1251'), to_enc='koi8-r') == u'юникод'.encode('cp1251')
-    assert library.python.strings.to_str(u'юникод'.encode('koi8-r'), to_enc='cp1251') == u'юникод'.encode('koi8-r')
-
-
-def test_stringize_deep():
-    assert library.python.strings.stringize_deep({
-        'key 1': 'value 1',
-        u'ключ 2': u'значение 2',
-        'list': [u'ключ 2', 'key 1', (u'к', 2)]
-    }) == {
-        'key 1' if six.PY2 else b'key 1': 'value 1' if six.PY2 else b'value 1',
-        u'ключ 2'.encode('utf-8'): u'значение 2'.encode('utf-8'),
-        'list' if six.PY2 else b'list': [u'ключ 2'.encode('utf-8'), 'key 1' if six.PY2 else b'key 1', (u'к'.encode('utf-8'), 2)]
-    }
-
-
-def test_stringize_deep_doesnt_transcode():
-    assert library.python.strings.stringize_deep({
-        u'ключ 1'.encode('utf-8'): u'значение 1'.encode('utf-8'),
-        u'ключ 2'.encode('cp1251'): u'значение 2'.encode('cp1251'),
-    }) == {
-        u'ключ 1'.encode('utf-8'): u'значение 1'.encode('utf-8'),
-        u'ключ 2'.encode('cp1251'): u'значение 2'.encode('cp1251'),
-    }
-
-
-def test_stringize_deep_nested():
-    assert library.python.strings.stringize_deep({
-        'key 1': 'value 1',
-        u'ключ 2': {
-            'subkey 1': 'value 1',
-            u'подключ 2': u'value 2',
-        },
-    }) == {
-        'key 1' if six.PY2 else b'key 1': 'value 1' if six.PY2 else b'value 1',
-        u'ключ 2'.encode('utf-8'): {
-            'subkey 1' if six.PY2 else b'subkey 1': 'value 1' if six.PY2 else b'value 1',
-            u'подключ 2'.encode('utf-8'): u'value 2'.encode('utf-8'),
-        },
-    }
-
-
-def test_stringize_deep_plain():
-    assert library.python.strings.stringize_deep('str') == 'str' if six.PY2 else b'str'
-    assert library.python.strings.stringize_deep(u'юникод') == u'юникод'.encode('utf-8')
-    assert library.python.strings.stringize_deep(u'юникод'.encode('utf-8')) == u'юникод'.encode('utf-8')
-
-
-def test_stringize_deep_nonstr():
-    with pytest.raises(TypeError):
-        library.python.strings.stringize_deep(Convertible(), relaxed=False)
-    x = Convertible()
-    assert x == library.python.strings.stringize_deep(x)
-
-
-def test_unicodize_deep():
-    assert library.python.strings.unicodize_deep({
-        'key 1': 'value 1',
-        u'ключ 2': u'значение 2',
-        u'ключ 3'.encode('utf-8'): u'значение 3'.encode('utf-8'),
-    }) == {
-        u'key 1': u'value 1',
-        u'ключ 2': u'значение 2',
-        u'ключ 3': u'значение 3',
-    }
-
-
-def test_unicodize_deep_nested():
-    assert library.python.strings.unicodize_deep({
-        'key 1': 'value 1',
-        u'ключ 2': {
-            'subkey 1': 'value 1',
-            u'подключ 2': u'значение 2',
-            u'подключ 3'.encode('utf-8'): u'значение 3'.encode('utf-8'),
-        },
-    }) == {
-        u'key 1': u'value 1',
-        u'ключ 2': {
-            u'subkey 1': u'value 1',
-            u'подключ 2': u'значение 2',
-            u'подключ 3': u'значение 3',
-        },
-    }
-
-
-def test_unicodize_deep_plain():
-    assert library.python.strings.unicodize_deep('str') == u'str'
-    assert library.python.strings.unicodize_deep(u'юникод') == u'юникод'
-    assert library.python.strings.unicodize_deep(u'юникод'.encode('utf-8')) == u'юникод'
-
-
-def test_unicodize_deep_nonstr():
-    with pytest.raises(TypeError):
-        library.python.strings.unicodize_deep(Convertible(), relaxed=False)
-    x = Convertible()
-    assert x == library.python.strings.stringize_deep(x)
diff --git a/library/python/svn_version/ut/test_simple.py b/library/python/svn_version/ut/test_simple.py
deleted file mode 100644
index 50fa78f55d8..00000000000
--- a/library/python/svn_version/ut/test_simple.py
+++ /dev/null
@@ -1,24 +0,0 @@
-import library.python.svn_version as sv
-
-
-def test_simple():
-    assert sv.svn_version()
-    assert isinstance(sv.svn_version(), str)
-
-    assert sv.vcs()
-    assert isinstance(sv.vcs(), str)
-
-    # svn_revision() will be -1 on non-trunk commits via arc
-    # svn revision of 0 technically may exist, but practiacally it will never appear here
-    assert sv.svn_revision() >= 0 or (sv.vcs() != "svn" and sv.svn_revision() == -1)
-    assert isinstance(sv.svn_revision(), int)
-
-    # svn_last_revision() will be equal to zero on non-trunk commits
-    assert sv.svn_last_revision() >= 0 or (sv.vcs() != "svn" and sv.svn_last_revision() == -1)
-    assert isinstance(sv.svn_last_revision(), int)
-
-    assert sv.commit_id()
-    assert isinstance(sv.commit_id(), str)
-    assert len(sv.commit_id()) > 0
-    assert isinstance(sv.hash(), str)
-    assert isinstance(sv.patch_number(), int)
diff --git a/library/python/testing/__init__.py b/library/python/testing/__init__.py
deleted file mode 100644
index e69de29bb2d..00000000000
--- a/library/python/testing/__init__.py
+++ /dev/null
diff --git a/library/python/testing/yatest_lib/__init__.py b/library/python/testing/yatest_lib/__init__.py
deleted file mode 100644
index e69de29bb2d..00000000000
--- a/library/python/testing/yatest_lib/__init__.py
+++ /dev/null
diff --git a/library/python/tmp/__init__.py b/library/python/tmp/__init__.py
new file mode 100644
index 00000000000..6607984ccc9
--- /dev/null
+++ b/library/python/tmp/__init__.py
@@ -0,0 +1,109 @@
+import logging
+import tempfile
+import time
+import os
+import shutil
+import contextlib
+
+import library.python.fs as fs
+import library.python.unique_id as uniq_id
+
+logger = logging.getLogger(__name__)
+
+
+_tmp_roots = []
+_startup_tmp_dir = None
+_startup_tmp_dir_set = False
+
+
+def set_tmp_dir(root, keep_dir):
+    uniq_name = '{0}.{1}.{2}'.format(int(time.time()), os.getpid(), uniq_id.gen8())
+    tmp_dir = os.path.join(root, uniq_name)
+    fs.create_dirs(tmp_dir)
+
+    old_tmp_dir = os.environ.get('TMPDIR')
+    logger.debug('Set TMPDIR=%s instead of %s', tmp_dir, old_tmp_dir)
+    os.environ['TMPDIR'] = tmp_dir
+
+    global _startup_tmp_dir
+    global _startup_tmp_dir_set
+    if not _startup_tmp_dir_set:
+        _startup_tmp_dir = old_tmp_dir
+        _startup_tmp_dir_set = True
+
+    if not keep_dir:
+        _tmp_roots.append(tmp_dir)
+
+
+def remove_tmp_dirs(env=None):
+    if env is None:
+        env = os.environ
+
+    global _tmp_roots
+
+    for x in _tmp_roots:
+        logger.debug('Removing tmp dir %s', x)
+        shutil.rmtree(x, ignore_errors=True)
+
+    _tmp_roots = []
+
+    revert_tmp_dir(env)
+
+
+def revert_tmp_dir(env=None):
+    if not env:
+        env = os.environ
+
+    if _startup_tmp_dir_set:
+        if _startup_tmp_dir is not None:
+            env['TMPDIR'] = _startup_tmp_dir
+        else:
+            env.pop('TMPDIR', None)
+        logger.debug('Reset back TMPDIR=%s', env.get('TMPDIR'))
+
+
+def temp_path(path):
+    class Remover(object):
+        def __init__(self, path):
+            self.path = path
+
+        def __enter__(self):
+            return self.path
+
+        def __exit__(self, exc_type, exc_value, traceback):
+            if _tmp_roots or not _startup_tmp_dir_set:
+                fs.remove_tree_safe(path)
+
+    return Remover(path)
+
+
+def create_temp_file(prefix='yatmp'):
+    fd, path = tempfile.mkstemp(prefix=prefix)
+    os.close(fd)
+    return path
+
+
+def temp_dir(prefix='yatmp'):
+    tmpdir = tempfile.mkdtemp(prefix=prefix)
+    return temp_path(tmpdir)
+
+
+def temp_file(prefix='yatmp'):
+    tmpfile = create_temp_file(prefix=prefix)
+    return temp_path(tmpfile)
+
+
+@contextlib.contextmanager
+def environment(env):
+
+    def set_env(e):
+        os.environ.clear()
+        for k, v in e.items():
+            os.environ[k] = v
+
+    stored = os.environ.copy()
+    try:
+        set_env(env or {})
+        yield
+    finally:
+        set_env(stored)
diff --git a/library/python/unique_id/__init__.py b/library/python/unique_id/__init__.py
new file mode 100644
index 00000000000..1301a015d1c
--- /dev/null
+++ b/library/python/unique_id/__init__.py
@@ -0,0 +1,13 @@
+import string
+import random
+
+
+def uniq_string_generator(size=6, chars=string.ascii_lowercase + string.digits):
+    return lambda: ''.join(random.choice(chars) for _ in range(size))
+
+
+gen4 = uniq_string_generator(4)
+gen8 = uniq_string_generator(8)
+gen16 = uniq_string_generator(16)
+gen32 = uniq_string_generator(32)
+gen64 = uniq_string_generator(64)
diff --git a/library/python/windows/ut/test_windows.py b/library/python/windows/ut/test_windows.py
deleted file mode 100644
index bef3ec2dc58..00000000000
--- a/library/python/windows/ut/test_windows.py
+++ /dev/null
@@ -1,96 +0,0 @@
-# coding=utf-8
-
-import errno
-import os
-import pytest
-
-import library.python.strings
-import library.python.windows
-
-
-def gen_error_access_denied():
-    if library.python.windows.on_win():
-        err = WindowsError()
-        err.errno = errno.EACCES
-        err.strerror = ''
-        err.winerror = library.python.windows.ERRORS['ACCESS_DENIED']
-    else:
-        err = OSError()
-        err.errno = errno.EACCES
-        err.strerror = os.strerror(err.errno)
-    err.filename = 'unknown/file'
-    raise err
-
-
-def test_errorfix_buggy():
-    @library.python.windows.errorfix
-    def erroneous_func():
-        gen_error_access_denied()
-
-    with pytest.raises(OSError) as errinfo:
-        erroneous_func()
-    assert errinfo.value.errno == errno.EACCES
-    assert errinfo.value.filename == 'unknown/file'
-    assert isinstance(errinfo.value.strerror, basestring)
-    assert errinfo.value.strerror
-
-
-def test_errorfix_explicit():
-    @library.python.windows.errorfix
-    def erroneous_func():
-        if library.python.windows.on_win():
-            err = WindowsError()
-            err.winerror = library.python.windows.ERRORS['ACCESS_DENIED']
-        else:
-            err = OSError()
-        err.errno = errno.EACCES
-        err.strerror = 'Some error description'
-        err.filename = 'unknown/file'
-        raise err
-
-    with pytest.raises(OSError) as errinfo:
-        erroneous_func()
-    assert errinfo.value.errno == errno.EACCES
-    assert errinfo.value.filename == 'unknown/file'
-    assert errinfo.value.strerror == 'Some error description'
-
-
-def test_errorfix_decoding_cp1251():
-    @library.python.windows.errorfix
-    def erroneous_func():
-        model_msg = u'Какое-то описание ошибки'
-        if library.python.windows.on_win():
-            err = WindowsError()
-            err.strerror = library.python.strings.to_str(model_msg, 'cp1251')
-        else:
-            err = OSError()
-            err.strerror = library.python.strings.to_str(model_msg)
-        raise err
-
-    with pytest.raises(OSError) as errinfo:
-        erroneous_func()
-    error_msg = errinfo.value.strerror
-    if not isinstance(errinfo.value.strerror, unicode):
-        error_msg = library.python.strings.to_unicode(error_msg)
-    assert error_msg == u'Какое-то описание ошибки'
-
-
-def test_diehard():
-    @library.python.windows.diehard(library.python.windows.ERRORS['ACCESS_DENIED'], tries=5)
-    def erroneous_func(errors):
-        try:
-            gen_error_access_denied()
-        except Exception as e:
-            errors.append(e)
-            raise
-
-    raised_errors = []
-    with pytest.raises(OSError) as errinfo:
-        erroneous_func(raised_errors)
-    assert errinfo.value.errno == errno.EACCES
-    assert any(e.errno == errno.EACCES for e in raised_errors)
-    assert raised_errors and errinfo.value == raised_errors[-1]
-    if library.python.windows.on_win():
-        assert len(raised_errors) == 5
-    else:
-        assert len(raised_errors) == 1