Python 3.6 datetime.fromtimestamp throws error when given 0

Question

In Python 3.5.2 this works:

datetime.datetime.fromtimestamp(0)
returns -> datetime.datetime(1970, 1, 1, 1, 0)

In Python 3.6, however, I get

datetime.datetime.fromtimestamp(0)
-> OSError: [Errno 22] Invalid argument

I can't find any change to the function in the docs. I am curious why this breaks my scripts now and where I can find the reasons.

Can anybody shed some light on that?

Answer 1

It's a bug introduced in Python 3.6.0 on Windows only.
Details: https://bugs.python.org/issue29097

Patches are in the works and it will likely be fixed soon.