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Commit39e2dff

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Don't return with operand when conceptually void
This changes `return None` to `return` where it appears infunctions that are "conceptually void," i.e. cases where a functionalways returns None, its purpose is never to provide a return valueto the caller, and it would be a bug (or at least confusing style)to use the return value or have the call as a subexpression.This is already the prevailing style, so this is a consistencyimprovement, as well as improving clarity by avoiding giving theimpression that "None" is significant in those cases.Of course, functions that sometimes return values other than Nonedo not have "return None" replaced with a bare "return" statement.Those are left alone (when they return None, it means something).For the most part this is straightforward, but:- The handle_stderr local function in IndexFile.checkout is also slightly further refactored to better express what the early return is doing.- The "None" operand is removed as usual in GitConfigParser.read, even though a superclass has a same-named method with a return type that is not None. Usually when this happens, the superclass method returns something like Optional[Something], and it is a case of return type covariance, in which case the None operands should still be written. Here, however, the overriding method does not intend to be an override: it has an incompatible signature and cannot be called as if it were the superclass method, nor is its return type compatible.- The "None" operand is *retained* in git.cmd.handle_process_output even though the return type is annotated as None, because the function also returns the expression `finalizer(process)`. The argument `finalizer` is itself annotated to return None, but it looks like the intent may be to play along with the strange case that `finalizer` returns a non-None value, and forward it.
1 parentb8ee9be commit39e2dff

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7 files changed

+16
-15
lines changed

7 files changed

+16
-15
lines changed

‎git/cmd.py‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -528,13 +528,13 @@ def _terminate(self) -> None:
528528
try:
529529
ifproc.poll()isnotNone:
530530
self.status=self._status_code_if_terminateorproc.poll()
531-
returnNone
531+
return
532532
exceptOSErrorasex:
533533
log.info("Ignored error after process had died: %r",ex)
534534

535535
# It can be that nothing really exists anymore...
536536
ifosisNoneorgetattr(os,"kill",None)isNone:
537-
returnNone
537+
return
538538

539539
# Try to kill it.
540540
try:

‎git/config.py‎

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -203,7 +203,8 @@ def __setitem__(self, key: str, value: _T) -> None:
203203
defadd(self,key:str,value:Any)->None:
204204
ifkeynotinself:
205205
super().__setitem__(key, [value])
206-
returnNone
206+
return
207+
207208
super().__getitem__(key).append(value)
208209

209210
defsetall(self,key:str,values:List[_T])->None:
@@ -579,7 +580,7 @@ def read(self) -> None: # type: ignore[override]
579580
:raise IOError: If a file cannot be handled
580581
"""
581582
ifself._is_initialized:
582-
returnNone
583+
return
583584
self._is_initialized=True
584585

585586
files_to_read:List[Union[PathLike,IO]]= [""]
@@ -697,7 +698,7 @@ def write(self) -> None:
697698
a file lock"""
698699
self._assure_writable("write")
699700
ifnotself._dirty:
700-
returnNone
701+
return
701702

702703
ifisinstance(self._file_or_files, (list,tuple)):
703704
raiseAssertionError(
@@ -711,7 +712,7 @@ def write(self) -> None:
711712
"Skipping write-back of configuration file as include files were merged in."
712713
+"Set merge_includes=False to prevent this."
713714
)
714-
returnNone
715+
return
715716
# END stop if we have include files
716717

717718
fp=self._file_or_files

‎git/index/base.py‎

Lines changed: 4 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -166,7 +166,7 @@ def _set_cache_(self, attr: str) -> None:
166166
exceptOSError:
167167
# In new repositories, there may be no index, which means we are empty.
168168
self.entries:Dict[Tuple[PathLike,StageType],IndexEntry]= {}
169-
returnNone
169+
return
170170
# END exception handling
171171

172172
try:
@@ -1210,9 +1210,9 @@ def checkout(
12101210
defhandle_stderr(proc:"Popen[bytes]",iter_checked_out_files:Iterable[PathLike])->None:
12111211
stderr_IO=proc.stderr
12121212
ifnotstderr_IO:
1213-
returnNone# Return early if stderr empty.
1214-
else:
1215-
stderr_bytes=stderr_IO.read()
1213+
return# Return early if stderr empty.
1214+
1215+
stderr_bytes=stderr_IO.read()
12161216
# line contents:
12171217
stderr=stderr_bytes.decode(defenc)
12181218
# git-checkout-index: this already exists

‎git/index/fun.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -83,7 +83,7 @@ def run_commit_hook(name: str, index: "IndexFile", *args: str) -> None:
8383
"""
8484
hp=hook_path(name,index.repo.git_dir)
8585
ifnotos.access(hp,os.X_OK):
86-
returnNone
86+
return
8787

8888
env=os.environ.copy()
8989
env["GIT_INDEX_FILE"]=safe_decode(str(index.path))

‎git/objects/tree.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -68,7 +68,7 @@ def git_cmp(t1: TreeCacheTup, t2: TreeCacheTup) -> int:
6868

6969
defmerge_sort(a:List[TreeCacheTup],cmp:Callable[[TreeCacheTup,TreeCacheTup],int])->None:
7070
iflen(a)<2:
71-
returnNone
71+
return
7272

7373
mid=len(a)//2
7474
lefthalf=a[:mid]

‎git/objects/util.py‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -500,8 +500,8 @@ def addToStack(
500500
depth:int,
501501
)->None:
502502
lst=self._get_intermediate_items(item)
503-
ifnotlst:#empty list
504-
returnNone
503+
ifnotlst:#Empty list
504+
return
505505
ifbranch_first:
506506
stack.extendleft(TraverseNT(depth,i,src_item)foriinlst)
507507
else:

‎git/util.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -644,7 +644,7 @@ def _parse_progress_line(self, line: AnyStr) -> None:
644644
self.line_dropped(line_str)
645645
# Note: Don't add this line to the other lines, as we have to silently
646646
# drop it.
647-
returnNone
647+
return
648648
# END handle op code
649649

650650
# Figure out stage.

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