Remove Outdated Python 2.3 Compatibility and Unused Test Utilities. (#916)

* test: Simplify `test_subinterface.py`

Remove unused `sys` import and `test_main` function.
Streamline `ctypes` imports for better clarity.

* refactor: Remove unused test utilities from `test/__init__.py`

Remove `is_resource_enabled` and `requires` functions to simplify test setup.

* refactor: Remove Python 2.3 compatibility for `__name__` assignment.

Removes a `try...except TypeError` block related to `__name__` assignment
in `client/lazybind.py`. This compatibility code for Python 2.3's read-only
`__name__` attribute is no longer necessary in modern Python versions,
simplifying the codebase.

Author: junkmd

comtypes/client/lazybind.py

@@ -159,11 +159,7 @@ def __getattr__(self, name):
             def caller(*args):
                 return self._comobj._invoke(descr.memid, descr.invkind, 0, *args)
 
-            try:
-                caller.__name__ = name
-            except TypeError:
-                # In Python 2.3, __name__ is readonly
-                pass
+            caller.__name__ = name
             return caller
 
     def __setattr__(self, name, value):

comtypes/test/__init__.py

@@ -37,37 +37,9 @@ class ResourceDenied(Exception):
     """
 
 
-def is_resource_enabled(resource):
-    """Test whether a resource is enabled.
-
-    If the caller's module is __main__ then automatically return True."""
-    if sys._getframe().f_back.f_globals.get("__name__") == "__main__":
-        return True
-    result = use_resources is not None and (
-        resource in use_resources or "*" in use_resources
-    )
-    if not result:
-        _unavail[resource] = None
-    return result
-
-
 _unavail = {}
 
 
-def requires(resource, msg=None):
-    """Raise ResourceDenied if the specified resource is not available.
-
-    If the caller's module is __main__ then automatically return True."""
-    # see if the caller's module is __main__ - if so, treat as if
-    # the resource was set
-    if sys._getframe().f_back.f_globals.get("__name__") == "__main__":
-        return
-    if not is_resource_enabled(resource):
-        if msg is None:
-            msg = f"Use of the `{resource}` resource not enabled"
-        raise ResourceDenied(msg)
-
-
 def find_package_modules(package, mask):
     import fnmatch
 

comtypes/test/test_subinterface.py

@@ -1,14 +1,7 @@
-import sys
 import unittest
-from ctypes import *
+from ctypes import c_void_p
 
-from comtypes import GUID, IUnknown
-
-
-def test_main():
-    from test import test_support
-
-    test_support.run_unittest(Test)
+from comtypes import IUnknown
 
 
 class Test(unittest.TestCase):