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Commit5d7e55b

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Add return-type annotation on __init__ methods
Although sometimes found unintuitive, the reutrn type of a class's__init__ method is best annotated as None, as in other functionsthat return implicitly or by operand-less return statements.Note that this is only a minor improvement, effectively just astyle fix, because mypy treats __init__ specially and, *when atleast one parameter is annotated*, its return type is implicitlyNone rather than implicitly Any like other functions. All the__init__ methods modified here did already have one or moreannotated parameters.However, having __init__ methods without the return type makes iteasier to introduce a bug where an __init__ method with noparameters besides self -- which itself should almost always beunannotated and is properly inferred -- is written and the returnannotation needed to get mypy to regard it as statically typed,so it checks it at all, is omitted. (It is also inelegant whenone considers the meaning of __init__ and the distinction betweenit and __new__.)This commit does not add any return type annotations to functionsin the test suite, since the test suite doesn't currently usestatic typing.Further reading:-https://peps.python.org/pep-0484/#the-meaning-of-annotations-python/mypy#604-#1755 (comment)
1 parente984bfe commit5d7e55b

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7 files changed

+7
-7
lines changed

7 files changed

+7
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‎git/cmd.py

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@@ -846,7 +846,7 @@ def __del__(self) -> None:
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self._stream.read(bytes_left+1)
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# END handle incomplete read
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def__init__(self,working_dir:Union[None,PathLike]=None):
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def__init__(self,working_dir:Union[None,PathLike]=None)->None:
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"""Initialize this instance with:
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:param working_dir:

‎git/objects/base.py

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@@ -55,7 +55,7 @@ class Object(LazyMixin):
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type:Union[Lit_commit_ish,None]=None
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def__init__(self,repo:"Repo",binsha:bytes):
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def__init__(self,repo:"Repo",binsha:bytes)->None:
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"""Initialize an object by identifying it by its binary sha.
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All keyword arguments will be set on demand if ``None``.

‎git/objects/submodule/root.py

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@@ -56,7 +56,7 @@ class RootModule(Submodule):
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k_root_name="__ROOT__"
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def__init__(self,repo:"Repo"):
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def__init__(self,repo:"Repo")->None:
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# repo, binsha, mode=None, path=None, name = None, parent_commit=None, url=None, ref=None)
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super().__init__(
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repo,

‎git/refs/head.py

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@@ -44,7 +44,7 @@ class HEAD(SymbolicReference):
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__slots__= ()
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def__init__(self,repo:"Repo",path:PathLike=_HEAD_NAME):
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def__init__(self,repo:"Repo",path:PathLike=_HEAD_NAME)->None:
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ifpath!=self._HEAD_NAME:
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raiseValueError("HEAD instance must point to %r, got %r"% (self._HEAD_NAME,path))
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super().__init__(repo,path)

‎git/refs/log.py

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@@ -164,7 +164,7 @@ def __new__(cls, filepath: Union[PathLike, None] = None) -> "RefLog":
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inst=super().__new__(cls)
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returninst
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def__init__(self,filepath:Union[PathLike,None]=None):
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def__init__(self,filepath:Union[PathLike,None]=None)->None:
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"""Initialize this instance with an optional filepath, from which we will
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initialize our data. The path is also used to write changes back using the
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:meth:`write` method."""

‎git/refs/symbolic.py

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@@ -74,7 +74,7 @@ class SymbolicReference:
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_remote_common_path_default="refs/remotes"
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_id_attribute_="name"
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def__init__(self,repo:"Repo",path:PathLike,check_path:bool=False):
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def__init__(self,repo:"Repo",path:PathLike,check_path:bool=False)->None:
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self.repo=repo
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self.path=path
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‎git/util.py

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@@ -917,7 +917,7 @@ class Stats:
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__slots__= ("total","files")
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def__init__(self,total:Total_TD,files:Dict[PathLike,Files_TD]):
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def__init__(self,total:Total_TD,files:Dict[PathLike,Files_TD])->None:
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self.total=total
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self.files=files
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