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Python 3.14: handle typing.Union immutability #3556

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ncoghlan wants to merge 3 commits into from
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Python 3.14: handle typing.Union immutability #3556

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Python 3.14: handle `typing.Union` immutability
ncoghlan Apr 26, 2025
cffc78b
No exception raised until Python 3.14 is tested
ncoghlan Apr 26, 2025
278766c
Use coverage exclusion comment marker
ncoghlan Apr 26, 2025
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7 changes: 6 additions & 1 deletion httpx/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -102,4 +102,9 @@ def main() -> None: # type: ignore
__locals = locals()
for __name in __all__:
if not __name.startswith("__"):
setattr(__locals[__name], "__module__", "httpx") # noqa
try:
setattr(__locals[__name], "__module__", "httpx") # noqa
except AttributeError: # pragma: no cover
# typing.Union instances are immutable in Python 3.14+,
# so don't fail if writing to "__module__" fails
continue # pragma: no cover