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Convert TIMESTAMPTZ to Python through zoneinfo instead of pytz - #710
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evertlammerts wants to merge 2 commits into
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evertlammerts wants to merge 2 commits into
evertlammerts wants to merge 2 commits into
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evertlammerts
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October 23, 2026 13:59
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Fetching a TIMESTAMPTZ as a Python value needed pytz, which no dependency group declares, so a clean install failed with "Required module 'pytz' failed to import" (#406). pytz's tables end at 2037, so every DST instant from 2038 on came back one hour off (#579).
Change:
PythonObject::FromValuebuilds the value fromdatetime.timezone.utcandzoneinfo.ZoneInfo(TimeZone). The pytz import cache item and every pytz pin in pyproject, the benchmarks and the tests are gone.We throw an error instead of relying on a
pytzdependency when zoneinfo has no database (Windows without the tzdata package, or an ICU name IANA lacks such as ACT). Only this fetch path needs it, and a dependency would reach every install.