Type Traversable.traverse() better, start types of submodule

git/config.py

@@ -29,8 +29,6 @@
 
 import configparser as cp
 
-from pathlib import Path
-
 # typing-------------------------------------------------------
 
 from typing import Any, Callable, IO, List, Dict, Sequence, TYPE_CHECKING, Tuple, Union, cast, overload
@@ -330,7 +328,7 @@ def _acquire_lock(self) -> None:
                         "Write-ConfigParsers can operate on a single file only, multiple files have been passed")
                 # END single file check
 
-                if isinstance(self._file_or_files, (str, Path)):  # cannot narrow by os._pathlike until 3.5 dropped
+                if isinstance(self._file_or_files, (str, os.PathLike)):
                     file_or_files = self._file_or_files
                 else:
                     file_or_files = cast(IO, self._file_or_files).name

git/index/base.py

@@ -3,7 +3,7 @@
 #
 # This module is part of GitPython and is released under
 # the BSD License: http://www.opensource.org/licenses/bsd-license.php
-from git.refs.reference import Reference
+
 import glob
 from io import BytesIO
 import os
@@ -74,6 +74,7 @@
 if TYPE_CHECKING:
     from subprocess import Popen
     from git.repo import Repo
+    from git.refs.reference import Reference
 
 
 StageType = int
@@ -1191,7 +1192,7 @@ def handle_stderr(proc: 'Popen[bytes]', iter_checked_out_files: Iterable[PathLik
         assert "Should not reach this point"
 
     @default_index
-    def reset(self, commit: Union[Commit, Reference, str] = 'HEAD', working_tree: bool = False,
+    def reset(self, commit: Union[Commit, 'Reference', str] = 'HEAD', working_tree: bool = False,
               paths: Union[None, Iterable[PathLike]] = None,
               head: bool = False, **kwargs: Any) -> 'IndexFile':
         """Reset the index to reflect the tree at the given commit. This will not

git/objects/base.py

@@ -17,15 +17,12 @@
 
 from typing import Any, TYPE_CHECKING, Optional, Union
 
-from git.types import PathLike
+from git.types import PathLike, Commit_ish
 
 if TYPE_CHECKING:
     from git.repo import Repo
     from gitdb.base import OStream
-    from .tree import Tree
-    from .blob import Blob
-    from .tag import TagObject
-    from .commit import Commit
+    # from .tree import Tree, Blob, Commit, TagObject
 
 # --------------------------------------------------------------------------
 
@@ -71,7 +68,7 @@ def new(cls, repo: 'Repo', id):  # @ReservedAssignment
         return repo.rev_parse(str(id))
 
     @classmethod
-    def new_from_sha(cls, repo: 'Repo', sha1: bytes) -> Union['Commit', 'TagObject', 'Tree', 'Blob']:
+    def new_from_sha(cls, repo: 'Repo', sha1: bytes) -> Commit_ish:
         """
         :return: new object instance of a type appropriate to represent the given
             binary sha1

git/objects/commit.py

@@ -3,12 +3,10 @@
 #
 # This module is part of GitPython and is released under
 # the BSD License: http://www.opensource.org/licenses/bsd-license.php
-
 from gitdb import IStream
 from git.util import (
     hex_to_bin,
     Actor,
-    IterableObj,
     Stats,
     finalize_process
 )
@@ -17,8 +15,8 @@
 from .tree import Tree
 from . import base
 from .util import (
-    Traversable,
     Serializable,
+    TraversableIterableObj,
     parse_date,
     altz_to_utctz_str,
     parse_actor_and_date,
@@ -36,18 +34,25 @@
 from io import BytesIO
 import logging
 
-from typing import List, Tuple, Union, TYPE_CHECKING
+
+# typing ------------------------------------------------------------------
+
+from typing import Any, Iterator, List, Sequence, Tuple, Union, TYPE_CHECKING
+
+from git.types import PathLike
 
 if TYPE_CHECKING:
     from git.repo import Repo
 
+# ------------------------------------------------------------------------
+
 log = logging.getLogger('git.objects.commit')
 log.addHandler(logging.NullHandler())
 
 __all__ = ('Commit', )
 
 
-class Commit(base.Object, IterableObj, Diffable, Traversable, Serializable):
+class Commit(base.Object, TraversableIterableObj, Diffable, Serializable):
 
     """Wraps a git Commit object.
 
@@ -73,7 +78,8 @@ class Commit(base.Object, IterableObj, Diffable, Traversable, Serializable):
                  "message", "parents", "encoding", "gpgsig")
     _id_attribute_ = "hexsha"
 
-    def __init__(self, repo, binsha, tree=None, author=None, authored_date=None, author_tz_offset=None,
+    def __init__(self, repo, binsha, tree=None, author: Union[Actor, None] = None,
+                 authored_date=None, author_tz_offset=None,
                  committer=None, committed_date=None, committer_tz_offset=None,
                  message=None, parents: Union[Tuple['Commit', ...], List['Commit'], None] = None,
                  encoding=None, gpgsig=None):
@@ -139,7 +145,7 @@ def __init__(self, repo, binsha, tree=None, author=None, authored_date=None, aut
             self.gpgsig = gpgsig
 
     @classmethod
-    def _get_intermediate_items(cls, commit: 'Commit') -> Tuple['Commit', ...]:  # type: ignore  ## cos overriding super
+    def _get_intermediate_items(cls, commit: 'Commit') -> Tuple['Commit', ...]:
         return tuple(commit.parents)
 
     @classmethod
@@ -225,7 +231,9 @@ def name_rev(self):
         return self.repo.git.name_rev(self)
 
     @classmethod
-    def iter_items(cls, repo, rev, paths='', **kwargs):
+    def iter_items(cls, repo: 'Repo', rev,                                          # type: ignore
+                   paths: Union[PathLike, Sequence[PathLike]] = '', **kwargs: Any
+                   ) -> Iterator['Commit']:
         """Find all commits matching the given criteria.
 
         :param repo: is the Repo
@@ -245,15 +253,23 @@ def iter_items(cls, repo, rev, paths='', **kwargs):
 
         # use -- in any case, to prevent possibility of ambiguous arguments
         # see https://github.com/gitpython-developers/GitPython/issues/264
-        args = ['--']
+
+        args_list: List[Union[PathLike, Sequence[PathLike]]] = ['--']
+
         if paths:
-            args.extend((paths, ))
+            paths_tup: Tuple[PathLike, ...]
+            if isinstance(paths, (str, os.PathLike)):
+                paths_tup = (paths, )
+            else:
+                paths_tup = tuple(paths)
+
+            args_list.extend(paths_tup)
         # END if paths
 
-        proc = repo.git.rev_list(rev, args, as_process=True, **kwargs)
+        proc = repo.git.rev_list(rev, args_list, as_process=True, **kwargs)
         return cls._iter_from_process_or_stream(repo, proc)
 
-    def iter_parents(self, paths='', **kwargs):
+    def iter_parents(self, paths: Union[PathLike, Sequence[PathLike]] = '', **kwargs) -> Iterator['Commit']:
         """Iterate _all_ parents of this commit.
 
         :param paths:
@@ -269,7 +285,7 @@ def iter_parents(self, paths='', **kwargs):
 
         return self.iter_items(self.repo, self, paths, **kwargs)
 
-    @property
+    @ property
     def stats(self):
         """Create a git stat from changes between this commit and its first parent
         or from all changes done if this is the very first commit.
@@ -286,7 +302,7 @@ def stats(self):
             text = self.repo.git.diff(self.parents[0].hexsha, self.hexsha, '--', numstat=True)
         return Stats._list_from_string(self.repo, text)
 
-    @classmethod
+    @ classmethod
     def _iter_from_process_or_stream(cls, repo, proc_or_stream):
         """Parse out commit information into a list of Commit objects
         We expect one-line per commit, and parse the actual commit information directly
@@ -317,7 +333,7 @@ def _iter_from_process_or_stream(cls, repo, proc_or_stream):
         if hasattr(proc_or_stream, 'wait'):
             finalize_process(proc_or_stream)
 
-    @classmethod
+    @ classmethod
     def create_from_tree(cls, repo, tree, message, parent_commits=None, head=False, author=None, committer=None,
                          author_date=None, commit_date=None):
         """Commit the given tree, creating a commit object.