gh-120782: Update internal type cache when reloading datetime#120829
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neonene commented Jun 21, 2024
kumaraditya303 approved these changes Jun 21, 2024
| _datetime.time.max > _datetime.time.min | ||
| _datetime.datetime.max > _datetime.datetime.min | ||
| _datetime.timedelta.max > _datetime.timedelta.min | ||
| isinstance(_datetime.timezone.min, _datetime.tzinfo) |
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assert isinstance(_datetime.timezone.min, _datetime.tzinfo) ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError assert not isinstance(_datetime.timezone.min, _datetime.tzinfo) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError Both fail, so this checks if it crashes or not. I agree this is not a good example.
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Given that the code looks a bit unusual, it would be worth adding a brief comment explaining that.
(Sorry I didn't notice this during my earlier review. Good catch, @JelleZijlstra.)
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Wouldn't it make sense to have these asserts actually check that the values are of the type they should be? The bug manifested itself as these values appearing to be objects of various random types.
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You could also assert that timezone.__dict__["min"] is timezone.min.
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neonene commented Jun 21, 2024
Thanks. I'll make a backport PR to 3.13 manually with an assertion to the test case. |
GH-120855 is a backport of this pull request to the 3.13 branch. |
mrahtz pushed a commit to mrahtz/cpython that referenced this pull request Jun 30, 2024
kumaraditya303 pushed a commit that referenced this pull request Jul 3, 2024
…H-120829) (#120855) * [3.13] gh-120782: Update internal type cache when reloading datetime When reloading _datetime module, the single-phase version did not invoke the PyInit__datetime function, whereas the current multi-phase version updates the static types through the module init. The outdated static type cache in the interpreter state needs to be invalidated at the end of reloading the multi-phase module.
bedevere-bot commented Jul 3, 2024
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noahbkim pushed a commit to hudson-trading/cpython that referenced this pull request Jul 11, 2024
estyxx pushed a commit to estyxx/cpython that referenced this pull request Jul 17, 2024
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When reloading
_datetimemodule, the single-phase version did not invoke thePyInit__datetimefunction, whereas the current multi-phase version updates the static types through the module init. The outdated static type cache in the interpreter state needs to be invalidated at the end of reloading the multi-phase module.test_datetimefails with a--foreverargument #120782