The result of gettz gives us an object that we can use to create time-zone-aware dates in Python: ... In Python 3.7, a new function ‘fromisoformat’ will been added to datetime that will ...

but the python datetime.time class doesn't seem to have defined arithmetic operators, nor does the datetime.timedelta. if there are methods for this, that's not obvious to me either: ...

Python’s datetime library, part of its standard library, provides datatypes and methods for working with dates and times. Dates and times are slippery, inconsistent things, however, and ...