Don't explicitly list direct submodules in __all__

This is for non-toplevel __all__, as git.__all__ already did not
do this.

As noted in some of the previous commit messags that added them,
omitting them might be a bit safer in terms of the impact of bugs
bugs in code using GitPython, in that unexpected modules, some of
which have the same name as other modules within GitPython, won't
be imported due to wildcard imports from intermediate subpackages
(those that are below the top-level git package/module but collect
non-subpackage modules). Though it is hard to know, since some of
these would have been imported before, when an __all__ was not
defined at that level.

However, a separate benefit of omitting them is consistency with
git.__all__, which does not list the direct Python submodules of
the git module.

This does not affect the output of the modattrs.py script, because
the attributes exist with the same objects as their values as a
result of those Python submodules being imported (in "from" imports
and otherwise), including when importing the top-level git module.

Author: EliahKagan

git/index/__init__.py

@@ -4,10 +4,6 @@
 """Initialize the index package."""
 
 __all__ = [
-    "base",
-    "fun",
-    "typ",
-    "util",
     "BaseIndexEntry",
     "BlobFilter",
     "CheckoutError",
@@ -16,6 +12,5 @@
     "StageType",
 ]
 
-from . import base, fun, typ, util
 from .base import CheckoutError, IndexFile
 from .typ import BaseIndexEntry, BlobFilter, IndexEntry, StageType

git/objects/__init__.py

@@ -4,12 +4,6 @@
 """Import all submodules' main classes into the package space."""
 
 __all__ = [
-    "base",
-    "blob",
-    "commit",
-    "submodule",
-    "tag",
-    "tree",
     "IndexObject",
     "Object",
     "Blob",
@@ -23,7 +17,6 @@
     "TreeModifier",
 ]
 
-from . import base, blob, commit, submodule, tag, tree
 from .base import IndexObject, Object
 from .blob import Blob
 from .commit import Commit

git/objects/submodule/__init__.py

@@ -1,16 +1,7 @@
 # This module is part of GitPython and is released under the
 # 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
 
-__all__ = [
-    "base",
-    "root",
-    "util",
-    "Submodule",
-    "UpdateProgress",
-    "RootModule",
-    "RootUpdateProgress",
-]
+__all__ = ["Submodule", "UpdateProgress", "RootModule", "RootUpdateProgress"]
 
-from . import base, root, util
 from .base import Submodule, UpdateProgress
 from .root import RootModule, RootUpdateProgress

git/refs/__init__.py

@@ -2,12 +2,6 @@
 # 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
 
 __all__ = [
-    "head",
-    "log",
-    "reference",
-    "remote",
-    "symbolic",
-    "tag",
     "HEAD",
     "Head",
     "RefLog",
@@ -19,7 +13,6 @@
     "TagReference",
 ]
 
-from . import head, log, reference, remote, symbolic, tag
 from .head import HEAD, Head
 from .log import RefLog, RefLogEntry
 from .reference import Reference

git/repo/__init__.py

@@ -3,7 +3,6 @@
 
 """Initialize the repo package."""
 
-__all__ = ["base", "fun", "Repo"]
+__all__ = ["Repo"]
 
-from . import base, fun
 from .base import Repo