Python version requirements

[skoslowski]

I am (happily) using utt 1.22 with Python 3.7. It mostly works perfectly, however utt report --week fails with an

AttributeError: type object 'datetime.date' has no attribute 'fromisocalendar'

This function was added in Python 3.8.

Not sure if this is a mistake or if Python 3.8 is intended to be the minimum required version, in which case may I suggest to add a python_requires setting to setup() and update Pipfile

Thanks for putting this package together!

[larose]

Thanks for the bug report @skoslowski. That's indeed a mistake, the intent is to support Python 3.7. I'll check how to backport that feature to Python 3.7 and make a new release. I should be able to do this in the next few weeks.

[ukrutt]

Sorry for the delay.

I believe I'm the one who originally added this feature. It relies on some functions in fromisocalendar, which was added in 3.8. I tried to do it without fromisocalendar, but that would have necessitated a lot of machinery -- and at the time I did not see the point of reinventing the wheel.

Thus, the --week switch, for now, is only available if you run Python 3.8.

[larose]

This has been fixed in 1.23!

[ukrutt]

Thanks @larose !