date time section to python.rst

[laszewsk]

add a date time section to python.rst

see for a good start
https://chrisalbon.com/python/strings_to_datetime.html

but do not chose variables usch as war...

[laszewsk]

you can do a pull request. if you do not know how this works have another ta work with you. document the process as this will be a lesson for the students. use screenshots and create rst document for it that we palce in contribution section under lessons.

Do section on date first create a pull request for that than you do documentation on how to do a pull request as you now know how to do it. Have your section be reviewed by one other TA. Saber can accept the pull request