fix(flask): stop reading deprecated flask.__version__#4422
Merged
xrmx merged 9 commits intoopen-telemetry:mainfrom Apr 22, 2026
Merged
fix(flask): stop reading deprecated flask.__version__#4422xrmx merged 9 commits intoopen-telemetry:mainfrom
xrmx merged 9 commits intoopen-telemetry:mainfrom
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Contributor
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Thank you for this @alliasgher . Please could you run |
Contributor
Author
|
Done, ran |
Flask 3.1 deprecated the module-level __version__ attribute and emits a
DeprecationWarning on access; 3.2 will remove it. The Flask
instrumentor was hitting that warning at import time via
_IS_FLASK_31_PLUS = hasattr(flask, "__version__") and
package_version.parse(flask.__version__) >= package_version.parse("3.1.0")
even though it already computes the installed Flask version via
importlib.metadata.version("flask") a few lines below. Use that
flask_version for the 3.1+ check and drop the deprecated attribute
access entirely.
Fixes open-telemetry#4402
Signed-off-by: Ali <alliasgher123@gmail.com>
Signed-off-by: alliasgher <alliasgher123@gmail.com>
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Contributor
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I think you missed the other user: |
Per @xrmx review — the test suite was the remaining caller of the deprecated attribute. Switch to importlib.metadata.version("flask") to match the production code change. Signed-off-by: alliasgher <alliasgher123@gmail.com>
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tammy-baylis-swi
approved these changes
Apr 15, 2026
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MikeGoldsmith
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xrmx
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Apr 21, 2026
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Apr 21, 2026
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Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>
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Description
Flask 3.1 deprecated the module-level
flask.__version__attribute and emits aDeprecationWarningon access; 3.2 will remove it. The Flask instrumentor was hitting that warning at import time via:even though it already computes the installed Flask version via
importlib.metadata.version("flask")a few lines below. Use thatflask_versionfor the 3.1+ check and drop the deprecated attribute access entirely.Fixes #4402
Test plan
_IS_FLASK_31_PLUS— just a different, non-deprecated source for the version string.Signed-off-by: Ali alliasgher123@gmail.com