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Commitaed613f

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[3.13]gh-133403: TypeTools/build/update_file.py and check it withmypy (GH-133404) (#133637)
(cherry picked from commit50b52cb)
1 parenta063d6c commitaed613f

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2 files changed

+28
-4
lines changed

2 files changed

+28
-4
lines changed

‎Tools/build/mypy.ini

Lines changed: 7 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,9 @@
11
[mypy]
2-
files = Tools/build/generate_sbom.py
2+
files =
3+
Tools/build/compute-changes.py,
4+
Tools/build/generate_sbom.py,
5+
Tools/build/update_file.py
6+
37
pretty = True
48

59
# Make sure Python can still be built
@@ -8,6 +12,8 @@ python_version = 3.10
812

913
# ...And be strict:
1014
strict = True
15+
strict_bytes = True
16+
local_partial_types = True
1117
extra_checks = True
1218
enable_error_code = ignore-without-code,redundant-expr,truthy-bool,possibly-undefined
1319
warn_unreachable = True

‎Tools/build/update_file.py

Lines changed: 21 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -6,14 +6,27 @@
66
actually change the in-tree generated code.
77
"""
88

9+
from __future__importannotations
10+
911
importcontextlib
1012
importos
1113
importos.path
1214
importsys
1315

16+
TYPE_CHECKING=False
17+
ifTYPE_CHECKING:
18+
importtyping
19+
fromcollections.abcimportIterator
20+
fromioimportTextIOWrapper
21+
22+
_Outcome:typing.TypeAlias=typing.Literal['created','updated','same']
23+
1424

1525
@contextlib.contextmanager
16-
defupdating_file_with_tmpfile(filename,tmpfile=None):
26+
defupdating_file_with_tmpfile(
27+
filename:str,
28+
tmpfile:str|None=None,
29+
)->Iterator[tuple[TextIOWrapper,TextIOWrapper]]:
1730
"""A context manager for updating a file via a temp file.
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1932
The context manager provides two open files: the source file open
@@ -46,13 +59,18 @@ def updating_file_with_tmpfile(filename, tmpfile=None):
4659
update_file_with_tmpfile(filename,tmpfile)
4760

4861

49-
defupdate_file_with_tmpfile(filename,tmpfile,*,create=False):
62+
defupdate_file_with_tmpfile(
63+
filename:str,
64+
tmpfile:str,
65+
*,
66+
create:bool=False,
67+
)->_Outcome:
5068
try:
5169
targetfile=open(filename,'rb')
5270
exceptFileNotFoundError:
5371
ifnotcreate:
5472
raise# re-raise
55-
outcome='created'
73+
outcome:_Outcome='created'
5674
os.replace(tmpfile,filename)
5775
else:
5876
withtargetfile:

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