Modernize indexes.timedeltas, indexes.datetimeindex #18161
Merged
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Two things here. They should be separate PRs, but so it goes.
indexes.datetimes and indexes.periods use a _field_accessor pattern to define several properties in their index classes. This updates TimedeltaIndex to use the same pattern, getting rid of the
_get_field
method that was used before.indexes.datetimes has a _utc() function that I think is designed to lazily import pytz. That ship has sailed elsewhere, so this removes that extra call.