Revert moving the module defining the GUID symbol. (#673)

* Revert parts of  commit 5fbe2d4.

* Align the import section.

* Add the module-level docstring

* Add the class-level docstring

comtypes/_post_coinit/guid.py → comtypes/GUID.py

@@ -1,3 +1,5 @@
+"""comtypes.GUID module"""
+
 from ctypes import oledll, windll
 from ctypes import byref, c_byte, c_ushort, c_ulong, c_wchar_p, Structure
 from typing import Any, TYPE_CHECKING
@@ -28,6 +30,8 @@ def binary(obj: "GUID") -> bytes:
 
 
 class GUID(Structure):
+    """Globally unique identifier structure."""
+
     _fields_ = [("Data1", DWORD), ("Data2", WORD), ("Data3", WORD), ("Data4", BYTE * 8)]
 
     def __init__(self, name=None):

comtypes/__init__.py

@@ -35,6 +35,7 @@
 else:
     _CData = _SimpleCData.__mro__[:-1][-1]
 
+from comtypes.GUID import GUID
 from comtypes import patcher  # noqa
 from comtypes._npsupport import interop as npsupport  # noqa
 from comtypes._tlib_version_checker import _check_version  # noqa
@@ -69,6 +70,8 @@ class ReturnHRESULT(Exception):
 # class IDLWarning(UserWarning):
 #    "Warn about questionable type information"
 
+_GUID = GUID
+IID = GUID
 DWORD = c_ulong
 
 wireHWND = c_ulong
@@ -189,10 +192,7 @@ def CoUninitialize():
 ################################################################
 
 from comtypes._post_coinit.bstr import BSTR  # noqa
-from comtypes._post_coinit.guid import GUID
 
-_GUID = GUID
-IID = GUID
 
 ################################################################
 # IPersist is a trivial interface, which allows to ask an object about

comtypes/_post_coinit/misc.py

@@ -15,11 +15,11 @@
 if TYPE_CHECKING:
     from comtypes import hints as hints  # noqa  # type: ignore
 
-from comtypes._memberspec import COMMETHOD
+from comtypes import GUID
 from comtypes import CLSCTX_SERVER, CLSCTX_LOCAL_SERVER, CLSCTX_REMOTE_SERVER
 from comtypes import _ole32, oledll, DWORD
+from comtypes._memberspec import COMMETHOD
 from comtypes._post_coinit.unknwn import IUnknown
-from comtypes._post_coinit.guid import GUID
 
 
 def _is_object(obj):

comtypes/_post_coinit/unknwn.py

@@ -7,11 +7,10 @@
 from typing import Optional
 from typing import List, Type
 
-from comtypes import _ole32_nohresult, com_interface_registry
+from comtypes import GUID, _ole32_nohresult, com_interface_registry
 from comtypes._memberspec import ComMemberGenerator, DispMemberGenerator
 from comtypes._memberspec import STDMETHOD, _ComMemberSpec, _DispMemberSpec
 from comtypes._post_coinit import _cominterface_meta_patcher as _meta_patch
-from comtypes._post_coinit.guid import GUID
 from comtypes._post_coinit.instancemethod import instancemethod
 
 logger = logging.getLogger(__name__)