Wanna be able to parse dates without seconds, minutes, hours.

[chasylexus]

Is it possible to add compatibility with strings without the time part for fuller compatibility with datetime library and more helpful usage in different applications where datetime format could be partially unexpected?

[gukoff]

I think that's possible.

If the pattern doesn't contain hours, we can e.g. add $%H to it and $00 to the datetime string (here $ is nothing but a sentinel).

This looks dirty though. And I'm not sure if this would be useful, because compatibility isn't the goal of the library: chrono's specifiers are different from Python's anyway.

I'm going to consider this after #2 and #3.