fix ya.make

1 files changed, 0 insertions, 1122 deletions

diff --git a/contrib/tools/python3/src/Lib/os.py b/contrib/tools/python3/src/Lib/os.py
deleted file mode 100644
index d26cfc9993..0000000000
--- a/contrib/tools/python3/src/Lib/os.py
+++ /dev/null
@@ -1,1122 +0,0 @@
-r"""OS routines for NT or Posix depending on what system we're on.
-
-This exports:
-  - all functions from posix or nt, e.g. unlink, stat, etc.
-  - os.path is either posixpath or ntpath
-  - os.name is either 'posix' or 'nt'
-  - os.curdir is a string representing the current directory (always '.')
-  - os.pardir is a string representing the parent directory (always '..')
-  - os.sep is the (or a most common) pathname separator ('/' or '\\')
-  - os.extsep is the extension separator (always '.')
-  - os.altsep is the alternate pathname separator (None or '/')
-  - os.pathsep is the component separator used in $PATH etc
-  - os.linesep is the line separator in text files ('\r' or '\n' or '\r\n')
-  - os.defpath is the default search path for executables
-  - os.devnull is the file path of the null device ('/dev/null', etc.)
-
-Programs that import and use 'os' stand a better chance of being
-portable between different platforms.  Of course, they must then
-only use functions that are defined by all platforms (e.g., unlink
-and opendir), and leave all pathname manipulation to os.path
-(e.g., split and join).
-"""
-
-#'
-import abc
-import sys
-import stat as st
-
-from _collections_abc import _check_methods
-
-GenericAlias = type(list[int])
-
-_names = sys.builtin_module_names
-
-# Note:  more names are added to __all__ later.
-__all__ = ["altsep", "curdir", "pardir", "sep", "pathsep", "linesep",
-           "defpath", "name", "path", "devnull", "SEEK_SET", "SEEK_CUR",
-           "SEEK_END", "fsencode", "fsdecode", "get_exec_path", "fdopen",
-           "extsep"]
-
-def _exists(name):
-    return name in globals()
-
-def _get_exports_list(module):
-    try:
-        return list(module.__all__)
-    except AttributeError:
-        return [n for n in dir(module) if n[0] != '_']
-
-# Any new dependencies of the os module and/or changes in path separator
-# requires updating importlib as well.
-if 'posix' in _names:
-    name = 'posix'
-    linesep = '\n'
-    from posix import *
-    try:
-        from posix import _exit
-        __all__.append('_exit')
-    except ImportError:
-        pass
-    import posixpath as path
-
-    try:
-        from posix import _have_functions
-    except ImportError:
-        pass
-
-    import posix
-    __all__.extend(_get_exports_list(posix))
-    del posix
-
-elif 'nt' in _names:
-    name = 'nt'
-    linesep = '\r\n'
-    from nt import *
-    try:
-        from nt import _exit
-        __all__.append('_exit')
-    except ImportError:
-        pass
-    import ntpath as path
-
-    import nt
-    __all__.extend(_get_exports_list(nt))
-    del nt
-
-    try:
-        from nt import _have_functions
-    except ImportError:
-        pass
-
-else:
-    raise ImportError('no os specific module found')
-
-sys.modules['os.path'] = path
-from os.path import (curdir, pardir, sep, pathsep, defpath, extsep, altsep,
-    devnull)
-
-del _names
-
-
-if _exists("_have_functions"):
-    _globals = globals()
-    def _add(str, fn):
-        if (fn in _globals) and (str in _have_functions):
-            _set.add(_globals[fn])
-
-    _set = set()
-    _add("HAVE_FACCESSAT",  "access")
-    _add("HAVE_FCHMODAT",   "chmod")
-    _add("HAVE_FCHOWNAT",   "chown")
-    _add("HAVE_FSTATAT",    "stat")
-    _add("HAVE_FUTIMESAT",  "utime")
-    _add("HAVE_LINKAT",     "link")
-    _add("HAVE_MKDIRAT",    "mkdir")
-    _add("HAVE_MKFIFOAT",   "mkfifo")
-    _add("HAVE_MKNODAT",    "mknod")
-    _add("HAVE_OPENAT",     "open")
-    _add("HAVE_READLINKAT", "readlink")
-    _add("HAVE_RENAMEAT",   "rename")
-    _add("HAVE_SYMLINKAT",  "symlink")
-    _add("HAVE_UNLINKAT",   "unlink")
-    _add("HAVE_UNLINKAT",   "rmdir")
-    _add("HAVE_UTIMENSAT",  "utime")
-    supports_dir_fd = _set
-
-    _set = set()
-    _add("HAVE_FACCESSAT",  "access")
-    supports_effective_ids = _set
-
-    _set = set()
-    _add("HAVE_FCHDIR",     "chdir")
-    _add("HAVE_FCHMOD",     "chmod")
-    _add("HAVE_FCHOWN",     "chown")
-    _add("HAVE_FDOPENDIR",  "listdir")
-    _add("HAVE_FDOPENDIR",  "scandir")
-    _add("HAVE_FEXECVE",    "execve")
-    _set.add(stat) # fstat always works
-    _add("HAVE_FTRUNCATE",  "truncate")
-    _add("HAVE_FUTIMENS",   "utime")
-    _add("HAVE_FUTIMES",    "utime")
-    _add("HAVE_FPATHCONF",  "pathconf")
-    if _exists("statvfs") and _exists("fstatvfs"): # mac os x10.3
-        _add("HAVE_FSTATVFS", "statvfs")
-    supports_fd = _set
-
-    _set = set()
-    _add("HAVE_FACCESSAT",  "access")
-    # Some platforms don't support lchmod().  Often the function exists
-    # anyway, as a stub that always returns ENOSUP or perhaps EOPNOTSUPP.
-    # (No, I don't know why that's a good design.)  ./configure will detect
-    # this and reject it--so HAVE_LCHMOD still won't be defined on such
-    # platforms.  This is Very Helpful.
-    #
-    # However, sometimes platforms without a working lchmod() *do* have
-    # fchmodat().  (Examples: Linux kernel 3.2 with glibc 2.15,
-    # OpenIndiana 3.x.)  And fchmodat() has a flag that theoretically makes
-    # it behave like lchmod().  So in theory it would be a suitable
-    # replacement for lchmod().  But when lchmod() doesn't work, fchmodat()'s
-    # flag doesn't work *either*.  Sadly ./configure isn't sophisticated
-    # enough to detect this condition--it only determines whether or not
-    # fchmodat() minimally works.
-    #
-    # Therefore we simply ignore fchmodat() when deciding whether or not
-    # os.chmod supports follow_symlinks.  Just checking lchmod() is
-    # sufficient.  After all--if you have a working fchmodat(), your
-    # lchmod() almost certainly works too.
-    #
-    # _add("HAVE_FCHMODAT",   "chmod")
-    _add("HAVE_FCHOWNAT",   "chown")
-    _add("HAVE_FSTATAT",    "stat")
-    _add("HAVE_LCHFLAGS",   "chflags")
-    _add("HAVE_LCHMOD",     "chmod")
-    if _exists("lchown"): # mac os x10.3
-        _add("HAVE_LCHOWN", "chown")
-    _add("HAVE_LINKAT",     "link")
-    _add("HAVE_LUTIMES",    "utime")
-    _add("HAVE_LSTAT",      "stat")
-    _add("HAVE_FSTATAT",    "stat")
-    _add("HAVE_UTIMENSAT",  "utime")
-    _add("MS_WINDOWS",      "stat")
-    supports_follow_symlinks = _set
-
-    del _set
-    del _have_functions
-    del _globals
-    del _add
-
-
-# Python uses fixed values for the SEEK_ constants; they are mapped
-# to native constants if necessary in posixmodule.c
-# Other possible SEEK values are directly imported from posixmodule.c
-SEEK_SET = 0
-SEEK_CUR = 1
-SEEK_END = 2
-
-# Super directory utilities.
-# (Inspired by Eric Raymond; the doc strings are mostly his)
-
-def makedirs(name, mode=0o777, exist_ok=False):
-    """makedirs(name [, mode=0o777][, exist_ok=False])
-
-    Super-mkdir; create a leaf directory and all intermediate ones.  Works like
-    mkdir, except that any intermediate path segment (not just the rightmost)
-    will be created if it does not exist. If the target directory already
-    exists, raise an OSError if exist_ok is False. Otherwise no exception is
-    raised.  This is recursive.
-
-    """
-    head, tail = path.split(name)
-    if not tail:
-        head, tail = path.split(head)
-    if head and tail and not path.exists(head):
-        try:
-            makedirs(head, exist_ok=exist_ok)
-        except FileExistsError:
-            # Defeats race condition when another thread created the path
-            pass
-        cdir = curdir
-        if isinstance(tail, bytes):
-            cdir = bytes(curdir, 'ASCII')
-        if tail == cdir:           # xxx/newdir/. exists if xxx/newdir exists
-            return
-    try:
-        mkdir(name, mode)
-    except OSError:
-        # Cannot rely on checking for EEXIST, since the operating system
-        # could give priority to other errors like EACCES or EROFS
-        if not exist_ok or not path.isdir(name):
-            raise
-
-def removedirs(name):
-    """removedirs(name)
-
-    Super-rmdir; remove a leaf directory and all empty intermediate
-    ones.  Works like rmdir except that, if the leaf directory is
-    successfully removed, directories corresponding to rightmost path
-    segments will be pruned away until either the whole path is
-    consumed or an error occurs.  Errors during this latter phase are
-    ignored -- they generally mean that a directory was not empty.
-
-    """
-    rmdir(name)
-    head, tail = path.split(name)
-    if not tail:
-        head, tail = path.split(head)
-    while head and tail:
-        try:
-            rmdir(head)
-        except OSError:
-            break
-        head, tail = path.split(head)
-
-def renames(old, new):
-    """renames(old, new)
-
-    Super-rename; create directories as necessary and delete any left
-    empty.  Works like rename, except creation of any intermediate
-    directories needed to make the new pathname good is attempted
-    first.  After the rename, directories corresponding to rightmost
-    path segments of the old name will be pruned until either the
-    whole path is consumed or a nonempty directory is found.
-
-    Note: this function can fail with the new directory structure made
-    if you lack permissions needed to unlink the leaf directory or
-    file.
-
-    """
-    head, tail = path.split(new)
-    if head and tail and not path.exists(head):
-        makedirs(head)
-    rename(old, new)
-    head, tail = path.split(old)
-    if head and tail:
-        try:
-            removedirs(head)
-        except OSError:
-            pass
-
-__all__.extend(["makedirs", "removedirs", "renames"])
-
-def walk(top, topdown=True, onerror=None, followlinks=False):
-    """Directory tree generator.
-
-    For each directory in the directory tree rooted at top (including top
-    itself, but excluding '.' and '..'), yields a 3-tuple
-
-        dirpath, dirnames, filenames
-
-    dirpath is a string, the path to the directory.  dirnames is a list of
-    the names of the subdirectories in dirpath (excluding '.' and '..').
-    filenames is a list of the names of the non-directory files in dirpath.
-    Note that the names in the lists are just names, with no path components.
-    To get a full path (which begins with top) to a file or directory in
-    dirpath, do os.path.join(dirpath, name).
-
-    If optional arg 'topdown' is true or not specified, the triple for a
-    directory is generated before the triples for any of its subdirectories
-    (directories are generated top down).  If topdown is false, the triple
-    for a directory is generated after the triples for all of its
-    subdirectories (directories are generated bottom up).
-
-    When topdown is true, the caller can modify the dirnames list in-place
-    (e.g., via del or slice assignment), and walk will only recurse into the
-    subdirectories whose names remain in dirnames; this can be used to prune the
-    search, or to impose a specific order of visiting.  Modifying dirnames when
-    topdown is false has no effect on the behavior of os.walk(), since the
-    directories in dirnames have already been generated by the time dirnames
-    itself is generated. No matter the value of topdown, the list of
-    subdirectories is retrieved before the tuples for the directory and its
-    subdirectories are generated.
-
-    By default errors from the os.scandir() call are ignored.  If
-    optional arg 'onerror' is specified, it should be a function; it
-    will be called with one argument, an OSError instance.  It can
-    report the error to continue with the walk, or raise the exception
-    to abort the walk.  Note that the filename is available as the
-    filename attribute of the exception object.
-
-    By default, os.walk does not follow symbolic links to subdirectories on
-    systems that support them.  In order to get this functionality, set the
-    optional argument 'followlinks' to true.
-
-    Caution:  if you pass a relative pathname for top, don't change the
-    current working directory between resumptions of walk.  walk never
-    changes the current directory, and assumes that the client doesn't
-    either.
-
-    Example:
-
-    import os
-    from os.path import join, getsize
-    for root, dirs, files in os.walk('python/Lib/email'):
-        print(root, "consumes", end="")
-        print(sum(getsize(join(root, name)) for name in files), end="")
-        print("bytes in", len(files), "non-directory files")
-        if 'CVS' in dirs:
-            dirs.remove('CVS')  # don't visit CVS directories
-
-    """
-    sys.audit("os.walk", top, topdown, onerror, followlinks)
-    return _walk(fspath(top), topdown, onerror, followlinks)
-
-def _walk(top, topdown, onerror, followlinks):
-    dirs = []
-    nondirs = []
-    walk_dirs = []
-
-    # We may not have read permission for top, in which case we can't
-    # get a list of the files the directory contains.  os.walk
-    # always suppressed the exception then, rather than blow up for a
-    # minor reason when (say) a thousand readable directories are still
-    # left to visit.  That logic is copied here.
-    try:
-        # Note that scandir is global in this module due
-        # to earlier import-*.
-        scandir_it = scandir(top)
-    except OSError as error:
-        if onerror is not None:
-            onerror(error)
-        return
-
-    with scandir_it:
-        while True:
-            try:
-                try:
-                    entry = next(scandir_it)
-                except StopIteration:
-                    break
-            except OSError as error:
-                if onerror is not None:
-                    onerror(error)
-                return
-
-            try:
-                is_dir = entry.is_dir()
-            except OSError:
-                # If is_dir() raises an OSError, consider that the entry is not
-                # a directory, same behaviour than os.path.isdir().
-                is_dir = False
-
-            if is_dir:
-                dirs.append(entry.name)
-            else:
-                nondirs.append(entry.name)
-
-            if not topdown and is_dir:
-                # Bottom-up: recurse into sub-directory, but exclude symlinks to
-                # directories if followlinks is False
-                if followlinks:
-                    walk_into = True
-                else:
-                    try:
-                        is_symlink = entry.is_symlink()
-                    except OSError:
-                        # If is_symlink() raises an OSError, consider that the
-                        # entry is not a symbolic link, same behaviour than
-                        # os.path.islink().
-                        is_symlink = False
-                    walk_into = not is_symlink
-
-                if walk_into:
-                    walk_dirs.append(entry.path)
-
-    # Yield before recursion if going top down
-    if topdown:
-        yield top, dirs, nondirs
-
-        # Recurse into sub-directories
-        islink, join = path.islink, path.join
-        for dirname in dirs:
-            new_path = join(top, dirname)
-            # Issue #23605: os.path.islink() is used instead of caching
-            # entry.is_symlink() result during the loop on os.scandir() because
-            # the caller can replace the directory entry during the "yield"
-            # above.
-            if followlinks or not islink(new_path):
-                yield from _walk(new_path, topdown, onerror, followlinks)
-    else:
-        # Recurse into sub-directories
-        for new_path in walk_dirs:
-            yield from _walk(new_path, topdown, onerror, followlinks)
-        # Yield after recursion if going bottom up
-        yield top, dirs, nondirs
-
-__all__.append("walk")
-
-if {open, stat} <= supports_dir_fd and {scandir, stat} <= supports_fd:
-
-    def fwalk(top=".", topdown=True, onerror=None, *, follow_symlinks=False, dir_fd=None):
-        """Directory tree generator.
-
-        This behaves exactly like walk(), except that it yields a 4-tuple
-
-            dirpath, dirnames, filenames, dirfd
-
-        `dirpath`, `dirnames` and `filenames` are identical to walk() output,
-        and `dirfd` is a file descriptor referring to the directory `dirpath`.
-
-        The advantage of fwalk() over walk() is that it's safe against symlink
-        races (when follow_symlinks is False).
-
-        If dir_fd is not None, it should be a file descriptor open to a directory,
-          and top should be relative; top will then be relative to that directory.
-          (dir_fd is always supported for fwalk.)
-
-        Caution:
-        Since fwalk() yields file descriptors, those are only valid until the
-        next iteration step, so you should dup() them if you want to keep them
-        for a longer period.
-
-        Example:
-
-        import os
-        for root, dirs, files, rootfd in os.fwalk('python/Lib/email'):
-            print(root, "consumes", end="")
-            print(sum(os.stat(name, dir_fd=rootfd).st_size for name in files),
-                  end="")
-            print("bytes in", len(files), "non-directory files")
-            if 'CVS' in dirs:
-                dirs.remove('CVS')  # don't visit CVS directories
-        """
-        sys.audit("os.fwalk", top, topdown, onerror, follow_symlinks, dir_fd)
-        if not isinstance(top, int) or not hasattr(top, '__index__'):
-            top = fspath(top)
-        # Note: To guard against symlink races, we use the standard
-        # lstat()/open()/fstat() trick.
-        if not follow_symlinks:
-            orig_st = stat(top, follow_symlinks=False, dir_fd=dir_fd)
-        topfd = open(top, O_RDONLY, dir_fd=dir_fd)
-        try:
-            if (follow_symlinks or (st.S_ISDIR(orig_st.st_mode) and
-                                    path.samestat(orig_st, stat(topfd)))):
-                yield from _fwalk(topfd, top, isinstance(top, bytes),
-                                  topdown, onerror, follow_symlinks)
-        finally:
-            close(topfd)
-
-    def _fwalk(topfd, toppath, isbytes, topdown, onerror, follow_symlinks):
-        # Note: This uses O(depth of the directory tree) file descriptors: if
-        # necessary, it can be adapted to only require O(1) FDs, see issue
-        # #13734.
-
-        scandir_it = scandir(topfd)
-        dirs = []
-        nondirs = []
-        entries = None if topdown or follow_symlinks else []
-        for entry in scandir_it:
-            name = entry.name
-            if isbytes:
-                name = fsencode(name)
-            try:
-                if entry.is_dir():
-                    dirs.append(name)
-                    if entries is not None:
-                        entries.append(entry)
-                else:
-                    nondirs.append(name)
-            except OSError:
-                try:
-                    # Add dangling symlinks, ignore disappeared files
-                    if entry.is_symlink():
-                        nondirs.append(name)
-                except OSError:
-                    pass
-
-        if topdown:
-            yield toppath, dirs, nondirs, topfd
-
-        for name in dirs if entries is None else zip(dirs, entries):
-            try:
-                if not follow_symlinks:
-                    if topdown:
-                        orig_st = stat(name, dir_fd=topfd, follow_symlinks=False)
-                    else:
-                        assert entries is not None
-                        name, entry = name
-                        orig_st = entry.stat(follow_symlinks=False)
-                dirfd = open(name, O_RDONLY, dir_fd=topfd)
-            except OSError as err:
-                if onerror is not None:
-                    onerror(err)
-                continue
-            try:
-                if follow_symlinks or path.samestat(orig_st, stat(dirfd)):
-                    dirpath = path.join(toppath, name)
-                    yield from _fwalk(dirfd, dirpath, isbytes,
-                                      topdown, onerror, follow_symlinks)
-            finally:
-                close(dirfd)
-
-        if not topdown:
-            yield toppath, dirs, nondirs, topfd
-
-    __all__.append("fwalk")
-
-def execl(file, *args):
-    """execl(file, *args)
-
-    Execute the executable file with argument list args, replacing the
-    current process. """
-    execv(file, args)
-
-def execle(file, *args):
-    """execle(file, *args, env)
-
-    Execute the executable file with argument list args and
-    environment env, replacing the current process. """
-    env = args[-1]
-    execve(file, args[:-1], env)
-
-def execlp(file, *args):
-    """execlp(file, *args)
-
-    Execute the executable file (which is searched for along $PATH)
-    with argument list args, replacing the current process. """
-    execvp(file, args)
-
-def execlpe(file, *args):
-    """execlpe(file, *args, env)
-
-    Execute the executable file (which is searched for along $PATH)
-    with argument list args and environment env, replacing the current
-    process. """
-    env = args[-1]
-    execvpe(file, args[:-1], env)
-
-def execvp(file, args):
-    """execvp(file, args)
-
-    Execute the executable file (which is searched for along $PATH)
-    with argument list args, replacing the current process.
-    args may be a list or tuple of strings. """
-    _execvpe(file, args)
-
-def execvpe(file, args, env):
-    """execvpe(file, args, env)
-
-    Execute the executable file (which is searched for along $PATH)
-    with argument list args and environment env, replacing the
-    current process.
-    args may be a list or tuple of strings. """
-    _execvpe(file, args, env)
-
-__all__.extend(["execl","execle","execlp","execlpe","execvp","execvpe"])
-
-def _execvpe(file, args, env=None):
-    if env is not None:
-        exec_func = execve
-        argrest = (args, env)
-    else:
-        exec_func = execv
-        argrest = (args,)
-        env = environ
-
-    if path.dirname(file):
-        exec_func(file, *argrest)
-        return
-    saved_exc = None
-    path_list = get_exec_path(env)
-    if name != 'nt':
-        file = fsencode(file)
-        path_list = map(fsencode, path_list)
-    for dir in path_list:
-        fullname = path.join(dir, file)
-        try:
-            exec_func(fullname, *argrest)
-        except (FileNotFoundError, NotADirectoryError) as e:
-            last_exc = e
-        except OSError as e:
-            last_exc = e
-            if saved_exc is None:
-                saved_exc = e
-    if saved_exc is not None:
-        raise saved_exc
-    raise last_exc
-
-
-def get_exec_path(env=None):
-    """Returns the sequence of directories that will be searched for the
-    named executable (similar to a shell) when launching a process.
-
-    *env* must be an environment variable dict or None.  If *env* is None,
-    os.environ will be used.
-    """
-    # Use a local import instead of a global import to limit the number of
-    # modules loaded at startup: the os module is always loaded at startup by
-    # Python. It may also avoid a bootstrap issue.
-    import warnings
-
-    if env is None:
-        env = environ
-
-    # {b'PATH': ...}.get('PATH') and {'PATH': ...}.get(b'PATH') emit a
-    # BytesWarning when using python -b or python -bb: ignore the warning
-    with warnings.catch_warnings():
-        warnings.simplefilter("ignore", BytesWarning)
-
-        try:
-            path_list = env.get('PATH')
-        except TypeError:
-            path_list = None
-
-        if supports_bytes_environ:
-            try:
-                path_listb = env[b'PATH']
-            except (KeyError, TypeError):
-                pass
-            else:
-                if path_list is not None:
-                    raise ValueError(
-                        "env cannot contain 'PATH' and b'PATH' keys")
-                path_list = path_listb
-
-            if path_list is not None and isinstance(path_list, bytes):
-                path_list = fsdecode(path_list)
-
-    if path_list is None:
-        path_list = defpath
-    return path_list.split(pathsep)
-
-
-# Change environ to automatically call putenv() and unsetenv()
-from _collections_abc import MutableMapping, Mapping
-
-class _Environ(MutableMapping):
-    def __init__(self, data, encodekey, decodekey, encodevalue, decodevalue):
-        self.encodekey = encodekey
-        self.decodekey = decodekey
-        self.encodevalue = encodevalue
-        self.decodevalue = decodevalue
-        self._data = data
-
-    def __getitem__(self, key):
-        try:
-            value = self._data[self.encodekey(key)]
-        except KeyError:
-            # raise KeyError with the original key value
-            raise KeyError(key) from None
-        return self.decodevalue(value)
-
-    def __setitem__(self, key, value):
-        key = self.encodekey(key)
-        value = self.encodevalue(value)
-        putenv(key, value)
-        self._data[key] = value
-
-    def __delitem__(self, key):
-        encodedkey = self.encodekey(key)
-        unsetenv(encodedkey)
-        try:
-            del self._data[encodedkey]
-        except KeyError:
-            # raise KeyError with the original key value
-            raise KeyError(key) from None
-
-    def __iter__(self):
-        # list() from dict object is an atomic operation
-        keys = list(self._data)
-        for key in keys:
-            yield self.decodekey(key)
-
-    def __len__(self):
-        return len(self._data)
-
-    def __repr__(self):
-        return 'environ({{{}}})'.format(', '.join(
-            ('{!r}: {!r}'.format(self.decodekey(key), self.decodevalue(value))
-            for key, value in self._data.items())))
-
-    def copy(self):
-        return dict(self)
-
-    def setdefault(self, key, value):
-        if key not in self:
-            self[key] = value
-        return self[key]
-
-    def __ior__(self, other):
-        self.update(other)
-        return self
-
-    def __or__(self, other):
-        if not isinstance(other, Mapping):
-            return NotImplemented
-        new = dict(self)
-        new.update(other)
-        return new
-
-    def __ror__(self, other):
-        if not isinstance(other, Mapping):
-            return NotImplemented
-        new = dict(other)
-        new.update(self)
-        return new
-
-def _createenviron():
-    if name == 'nt':
-        # Where Env Var Names Must Be UPPERCASE
-        def check_str(value):
-            if not isinstance(value, str):
-                raise TypeError("str expected, not %s" % type(value).__name__)
-            return value
-        encode = check_str
-        decode = str
-        def encodekey(key):
-            return encode(key).upper()
-        data = {}
-        for key, value in environ.items():
-            data[encodekey(key)] = value
-    else:
-        # Where Env Var Names Can Be Mixed Case
-        encoding = sys.getfilesystemencoding()
-        def encode(value):
-            if not isinstance(value, str):
-                raise TypeError("str expected, not %s" % type(value).__name__)
-            return value.encode(encoding, 'surrogateescape')
-        def decode(value):
-            return value.decode(encoding, 'surrogateescape')
-        encodekey = encode
-        data = environ
-    return _Environ(data,
-        encodekey, decode,
-        encode, decode)
-
-# unicode environ
-environ = _createenviron()
-del _createenviron
-
-
-def getenv(key, default=None):
-    """Get an environment variable, return None if it doesn't exist.
-    The optional second argument can specify an alternate default.
-    key, default and the result are str."""
-    return environ.get(key, default)
-
-supports_bytes_environ = (name != 'nt')
-__all__.extend(("getenv", "supports_bytes_environ"))
-
-if supports_bytes_environ:
-    def _check_bytes(value):
-        if not isinstance(value, bytes):
-            raise TypeError("bytes expected, not %s" % type(value).__name__)
-        return value
-
-    # bytes environ
-    environb = _Environ(environ._data,
-        _check_bytes, bytes,
-        _check_bytes, bytes)
-    del _check_bytes
-
-    def getenvb(key, default=None):
-        """Get an environment variable, return None if it doesn't exist.
-        The optional second argument can specify an alternate default.
-        key, default and the result are bytes."""
-        return environb.get(key, default)
-
-    __all__.extend(("environb", "getenvb"))
-
-def _fscodec():
-    encoding = sys.getfilesystemencoding()
-    errors = sys.getfilesystemencodeerrors()
-
-    def fsencode(filename):
-        """Encode filename (an os.PathLike, bytes, or str) to the filesystem
-        encoding with 'surrogateescape' error handler, return bytes unchanged.
-        On Windows, use 'strict' error handler if the file system encoding is
-        'mbcs' (which is the default encoding).
-        """
-        filename = fspath(filename)  # Does type-checking of `filename`.
-        if isinstance(filename, str):
-            return filename.encode(encoding, errors)
-        else:
-            return filename
-
-    def fsdecode(filename):
-        """Decode filename (an os.PathLike, bytes, or str) from the filesystem
-        encoding with 'surrogateescape' error handler, return str unchanged. On
-        Windows, use 'strict' error handler if the file system encoding is
-        'mbcs' (which is the default encoding).
-        """
-        filename = fspath(filename)  # Does type-checking of `filename`.
-        if isinstance(filename, bytes):
-            return filename.decode(encoding, errors)
-        else:
-            return filename
-
-    return fsencode, fsdecode
-
-fsencode, fsdecode = _fscodec()
-del _fscodec
-
-# Supply spawn*() (probably only for Unix)
-if _exists("fork") and not _exists("spawnv") and _exists("execv"):
-
-    P_WAIT = 0
-    P_NOWAIT = P_NOWAITO = 1
-
-    __all__.extend(["P_WAIT", "P_NOWAIT", "P_NOWAITO"])
-
-    # XXX Should we support P_DETACH?  I suppose it could fork()**2
-    # and close the std I/O streams.  Also, P_OVERLAY is the same
-    # as execv*()?
-
-    def _spawnvef(mode, file, args, env, func):
-        # Internal helper; func is the exec*() function to use
-        if not isinstance(args, (tuple, list)):
-            raise TypeError('argv must be a tuple or a list')
-        if not args or not args[0]:
-            raise ValueError('argv first element cannot be empty')
-        pid = fork()
-        if not pid:
-            # Child
-            try:
-                if env is None:
-                    func(file, args)
-                else:
-                    func(file, args, env)
-            except:
-                _exit(127)
-        else:
-            # Parent
-            if mode == P_NOWAIT:
-                return pid # Caller is responsible for waiting!
-            while 1:
-                wpid, sts = waitpid(pid, 0)
-                if WIFSTOPPED(sts):
-                    continue
-
-                return waitstatus_to_exitcode(sts)
-
-    def spawnv(mode, file, args):
-        """spawnv(mode, file, args) -> integer
-
-Execute file with arguments from args in a subprocess.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        return _spawnvef(mode, file, args, None, execv)
-
-    def spawnve(mode, file, args, env):
-        """spawnve(mode, file, args, env) -> integer
-
-Execute file with arguments from args in a subprocess with the
-specified environment.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        return _spawnvef(mode, file, args, env, execve)
-
-    # Note: spawnvp[e] isn't currently supported on Windows
-
-    def spawnvp(mode, file, args):
-        """spawnvp(mode, file, args) -> integer
-
-Execute file (which is looked for along $PATH) with arguments from
-args in a subprocess.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        return _spawnvef(mode, file, args, None, execvp)
-
-    def spawnvpe(mode, file, args, env):
-        """spawnvpe(mode, file, args, env) -> integer
-
-Execute file (which is looked for along $PATH) with arguments from
-args in a subprocess with the supplied environment.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        return _spawnvef(mode, file, args, env, execvpe)
-
-
-    __all__.extend(["spawnv", "spawnve", "spawnvp", "spawnvpe"])
-
-
-if _exists("spawnv"):
-    # These aren't supplied by the basic Windows code
-    # but can be easily implemented in Python
-
-    def spawnl(mode, file, *args):
-        """spawnl(mode, file, *args) -> integer
-
-Execute file with arguments from args in a subprocess.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        return spawnv(mode, file, args)
-
-    def spawnle(mode, file, *args):
-        """spawnle(mode, file, *args, env) -> integer
-
-Execute file with arguments from args in a subprocess with the
-supplied environment.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        env = args[-1]
-        return spawnve(mode, file, args[:-1], env)
-
-
-    __all__.extend(["spawnl", "spawnle"])
-
-
-if _exists("spawnvp"):
-    # At the moment, Windows doesn't implement spawnvp[e],
-    # so it won't have spawnlp[e] either.
-    def spawnlp(mode, file, *args):
-        """spawnlp(mode, file, *args) -> integer
-
-Execute file (which is looked for along $PATH) with arguments from
-args in a subprocess with the supplied environment.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        return spawnvp(mode, file, args)
-
-    def spawnlpe(mode, file, *args):
-        """spawnlpe(mode, file, *args, env) -> integer
-
-Execute file (which is looked for along $PATH) with arguments from
-args in a subprocess with the supplied environment.
-If mode == P_NOWAIT return the pid of the process.
-If mode == P_WAIT return the process's exit code if it exits normally;
-otherwise return -SIG, where SIG is the signal that killed it. """
-        env = args[-1]
-        return spawnvpe(mode, file, args[:-1], env)
-
-
-    __all__.extend(["spawnlp", "spawnlpe"])
-
-# VxWorks has no user space shell provided. As a result, running
-# command in a shell can't be supported.
-if sys.platform != 'vxworks':
-    # Supply os.popen()
-    def popen(cmd, mode="r", buffering=-1):
-        if not isinstance(cmd, str):
-            raise TypeError("invalid cmd type (%s, expected string)" % type(cmd))
-        if mode not in ("r", "w"):
-            raise ValueError("invalid mode %r" % mode)
-        if buffering == 0 or buffering is None:
-            raise ValueError("popen() does not support unbuffered streams")
-        import subprocess, io
-        if mode == "r":
-            proc = subprocess.Popen(cmd,
-                                    shell=True, text=True,
-                                    stdout=subprocess.PIPE,
-                                    bufsize=buffering)
-            return _wrap_close(proc.stdout, proc)
-        else:
-            proc = subprocess.Popen(cmd,
-                                    shell=True, text=True,
-                                    stdin=subprocess.PIPE,
-                                    bufsize=buffering)
-            return _wrap_close(proc.stdin, proc)
-
-    # Helper for popen() -- a proxy for a file whose close waits for the process
-    class _wrap_close:
-        def __init__(self, stream, proc):
-            self._stream = stream
-            self._proc = proc
-        def close(self):
-            self._stream.close()
-            returncode = self._proc.wait()
-            if returncode == 0:
-                return None
-            if name == 'nt':
-                return returncode
-            else:
-                return returncode << 8  # Shift left to match old behavior
-        def __enter__(self):
-            return self
-        def __exit__(self, *args):
-            self.close()
-        def __getattr__(self, name):
-            return getattr(self._stream, name)
-        def __iter__(self):
-            return iter(self._stream)
-
-    __all__.append("popen")
-
-# Supply os.fdopen()
-def fdopen(fd, mode="r", buffering=-1, encoding=None, *args, **kwargs):
-    if not isinstance(fd, int):
-        raise TypeError("invalid fd type (%s, expected integer)" % type(fd))
-    import io
-    if "b" not in mode:
-        encoding = io.text_encoding(encoding)
-    return io.open(fd, mode, buffering, encoding, *args, **kwargs)
-
-
-# For testing purposes, make sure the function is available when the C
-# implementation exists.
-def _fspath(path):
-    """Return the path representation of a path-like object.
-
-    If str or bytes is passed in, it is returned unchanged. Otherwise the
-    os.PathLike interface is used to get the path representation. If the
-    path representation is not str or bytes, TypeError is raised. If the
-    provided path is not str, bytes, or os.PathLike, TypeError is raised.
-    """
-    if isinstance(path, (str, bytes)):
-        return path
-
-    # Work from the object's type to match method resolution of other magic
-    # methods.
-    path_type = type(path)
-    try:
-        path_repr = path_type.__fspath__(path)
-    except AttributeError:
-        if hasattr(path_type, '__fspath__'):
-            raise
-        else:
-            raise TypeError("expected str, bytes or os.PathLike object, "
-                            "not " + path_type.__name__)
-    if isinstance(path_repr, (str, bytes)):
-        return path_repr
-    else:
-        raise TypeError("expected {}.__fspath__() to return str or bytes, "
-                        "not {}".format(path_type.__name__,
-                                        type(path_repr).__name__))
-
-# If there is no C implementation, make the pure Python version the
-# implementation as transparently as possible.
-if not _exists('fspath'):
-    fspath = _fspath
-    fspath.__name__ = "fspath"
-
-
-class PathLike(abc.ABC):
-
-    """Abstract base class for implementing the file system path protocol."""
-
-    @abc.abstractmethod
-    def __fspath__(self):
-        """Return the file system path representation of the object."""
-        raise NotImplementedError
-
-    @classmethod
-    def __subclasshook__(cls, subclass):
-        if cls is PathLike:
-            return _check_methods(subclass, '__fspath__')
-        return NotImplemented
-
-    __class_getitem__ = classmethod(GenericAlias)
-
-
-if name == 'nt':
-    class _AddedDllDirectory:
-        def __init__(self, path, cookie, remove_dll_directory):
-            self.path = path
-            self._cookie = cookie
-            self._remove_dll_directory = remove_dll_directory
-        def close(self):
-            self._remove_dll_directory(self._cookie)
-            self.path = None
-        def __enter__(self):
-            return self
-        def __exit__(self, *args):
-            self.close()
-        def __repr__(self):
-            if self.path:
-                return "<AddedDllDirectory({!r})>".format(self.path)
-            return "<AddedDllDirectory()>"
-
-    def add_dll_directory(path):
-        """Add a path to the DLL search path.
-
-        This search path is used when resolving dependencies for imported
-        extension modules (the module itself is resolved through sys.path),
-        and also by ctypes.
-
-        Remove the directory by calling close() on the returned object or
-        using it in a with statement.
-        """
-        import nt
-        cookie = nt._add_dll_directory(path)
-        return _AddedDllDirectory(
-            path,
-            cookie,
-            nt._remove_dll_directory
-        )