[cleanup] Misc fixes

Closes #3565, https://github.com/yt-dlp/yt-dlp/issues/3514#issuecomment-1105944364

yt_dlp/compat/__init__.py

@@ -46,10 +46,6 @@ def compat_ord(c):
     return c if isinstance(c, int) else ord(c)
 
 
-def compat_setenv(key, value, env=os.environ):
-    env[key] = value
-
-
 if compat_os_name == 'nt' and sys.version_info < (3, 8):
     # os.path.realpath on Windows does not follow symbolic links
     # prior to Python 3.8 (see https://bugs.python.org/issue9949)

yt_dlp/compat/_deprecated.py

@@ -44,4 +44,9 @@ compat_urllib_parse_urlparse = urllib.parse.urlparse
 compat_urllib_request = urllib.request
 compat_urlparse = compat_urllib_parse = urllib.parse
 
+
+def compat_setenv(key, value, env=os.environ):
+    env[key] = value
+
+
 __all__ = [x for x in globals() if x.startswith('compat_')]

yt_dlp/compat/asyncio.py

@@ -1,5 +1,4 @@
 # flake8: noqa: F405
-
 from asyncio import *  # noqa: F403
 
 from .compat_utils import passthrough_module

yt_dlp/compat/compat_utils.py

@@ -1,9 +1,28 @@
+import collections
 import contextlib
 import importlib
 import sys
 import types
 
 
+_NO_ATTRIBUTE = object()
+
+_Package = collections.namedtuple('Package', ('name', 'version'))
+
+
+def get_package_info(module):
+    parent = module.__name__.split('.')[0]
+    parent_module = None
+    with contextlib.suppress(ImportError):
+        parent_module = importlib.import_module(parent)
+
+    for attr in ('__version__', 'version_string', 'version'):
+        version = getattr(parent_module, attr, None)
+        if version is not None:
+            break
+    return _Package(getattr(module, '_yt_dlp__identifier', parent), str(version))
+
+
 def _is_package(module):
     try:
         module.__getattribute__('__path__')
@@ -12,9 +31,6 @@ def _is_package(module):
     return True
 
 
-_NO_ATTRIBUTE = object()
-
-
 def passthrough_module(parent, child, *, callback=lambda _: None):
     parent_module = importlib.import_module(parent)
     child_module = importlib.import_module(child, parent)

yt_dlp/compat/re.py

@@ -1,5 +1,4 @@
 # flake8: noqa: F405
-
 from re import *  # F403
 
 from .compat_utils import passthrough_module