Move yql/udfs/common/ to /yql/essentials YQL-19206

Except the following directories:

* clickhouse/client
* datetime
* knn
* roaring
commit_hash:c7da95636144d28db109d6b17ddc762e9bacb59f

1 files changed, 50 insertions, 0 deletions

diff --git a/yql/essentials/udfs/common/python/main_py3/__main__.pyx b/yql/essentials/udfs/common/python/main_py3/__main__.pyx
new file mode 100644
index 0000000000..6f4ca94358
--- /dev/null
+++ b/yql/essentials/udfs/common/python/main_py3/__main__.pyx
@@ -0,0 +1,50 @@
+import os
+import runpy
+import importlib
+
+import __res
+
+
+cdef env_entry_point = 'Y_PYTHON_ENTRY_POINT'
+
+
+cdef extern from 'main.h':
+    pass
+
+
+def find_pymain():
+    py_main = __res.find('PY_MAIN')
+
+    if isinstance(py_main, bytes):
+        py_main = py_main.decode('utf8')
+
+    if isinstance(py_main, unicode):
+        return py_main
+
+    return None
+
+
+def run_main():
+    entry_point = os.environ.pop(env_entry_point, None)
+
+    if entry_point is None:
+        entry_point = find_pymain()
+
+    if entry_point is None:
+        raise RuntimeError('No entry point found')
+
+    module_name, colon, func_name = entry_point.partition(':')
+
+    if not colon:
+        runpy._run_module_as_main(module_name, alter_argv=False)
+        return
+
+    if not module_name:
+        module_name = 'library.python.runtime_py3.entry_points'
+
+    module = importlib.import_module(module_name)
+    func = getattr(module, func_name)
+    func()
+
+
+run_main()