[Python] Set __spec__ attribute and not __cached__ for ROOT facade#21790
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guitargeek merged 1 commit intoroot-project:masterfrom Apr 7, 2026
Merged
[Python] Set __spec__ attribute and not __cached__ for ROOT facade#21790guitargeek merged 1 commit intoroot-project:masterfrom
__spec__ attribute and not __cached__ for ROOT facade#21790guitargeek merged 1 commit intoroot-project:masterfrom
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The Python documentation [1] says: > It is strongly recommended that you use module.__spec__.cached instead of module.__cached__. So this commit suggests to transfer the full `__spec__` attribute from the ROOT module to the facade, instead of `__cached__`. This also avoids errors when importing ROOT with Python 3.15, where `__cached__` will cease to be set or taken into consideration by the import system or standard library. Closes root-project#21787. [1] https://docs.python.org/3/reference/datamodel.html#module.__cached__
Test Results 22 files 22 suites 3d 6h 23m 13s ⏱️ Results for commit 4171724. |
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The Python documentation [1] says:
So this commit suggests to transfer the full
__spec__attribute from the ROOT module to the facade, instead of__cached__.This also avoids errors when importing ROOT with Python 3.15, where
__cached__will cease to be set or taken into consideration by the import system or standard library.Closes #21787.
[1] https://docs.python.org/3/reference/datamodel.html#module.__cached__
Thanks @ellert for reporting the problem!
To be backported to 6.36 and 6.38.