A type wrapper for the standard library `datetime` that supplies stricter checks, such as making 'datetime' not substitutable for 'date', and separating out Naive and Aware datetimes into separate, mutually-incompatible types.
Project description
DateType
A Workaround
DateType is a workaround for this
bug to demonstrate that we could
have a type-checking-time wrapper for datetime
that doesn't change (or almost
doesn't change) the implementation, but fixes up two very annoying behaviors of
the stdlib datetime
module:
-
a
datetime
now won't type-check as adate
- it still inherits at runtime (the implementation is, after all, not changed) but it doesn't inherit at type-time. -
there are separate types for naive and aware
datetime
s.
There's a very small bit of implementation glue (concrete @classmethod
s for
construction on the Naive
and Aware
types, and a few functions that do
runtime checks to convert to/from stdlib types).
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