gh-116111: Clarify DST behaviour in datetime arithmetic and zoneinfo docs #137092
+50
−2
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This PR updates the documentation for
datetime
andzoneinfo
to clarify how arithmetic involving aware datetime objects behaves during daylight saving time (DST) transitions.Changes include:
.. warning::
in thetimedelta
section noting that arithmetic on aware datetime objects with the sametzinfo
ignores DST... note::
in the datetime subtraction section, with a concrete example, explaining the "naive time" behavior.zoneinfo.rst
that previously claimed "no further intervention" was required to handle DST transitions... note::
inzoneinfo.rst
to show howtimedelta
arithmetic skips DST transitions unless handled explicitly.This PR resolves gh-116111 based on the suggestions on the issue
📚 Documentation preview 📚: https://cpython-previews--137092.org.readthedocs.build/