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Upgrading DateTime 2 to 3

Breaking2.12.8 → 3.0.3Breaking6Changed9Fixed7Other6

Full comparisonBack to DateTime
BreakingUpgrade verdict

6 breaking changes.

In plain terms
  • Code that referenced these exceptions through the DateTime class must import them from their new location.
  • Code relying on these old internal variables will break.
  • Very old saved DateTime objects without microsecond data can no longer be loaded.
  • The old comparison method on DateTime is gone.
Must act Top 3 of 6 that need code or config changes

What you must change

Breaking6
No longer provides DateError, DateTimeError, SyntaxError and TimeError as class attributes; import them from DateTime.interfaces instead.
DateErrorDateTimeErrorSyntaxErrorTimeErrorDateTime.interfaces
3.0a2CHANGES.rstSummarizedView source
Removes the deprecated _isDST and _localzone class variables.
_isDST_localzone
3.0a2CHANGES.rstSummarizedView source
Removes in-place migration of old DateTime pickles that lack a _micros value.
_micros
3.0a1CHANGES.rstSummarizedView source
Removes deprecated support for using DateTime.__cmp__.
DateTime.__cmp__
3.0a1CHANGES.rstSummarizedView source
DateTime 3 changes its pickle representation; older DateTime versions cannot read instances pickled with version 3.
3.0CHANGES.rstSummarizedView source
DateTime becomes a new-style class with slots instead of an old-style class.
DateTime
3.0CHANGES.rstSummarizedView source