In Python, se ho un timestamp unix, come lo inserisco in un campo datetime di MySQL?

Per convertire da un timestamp UNIX a un oggetto datetime Python, usa datetime.fromtimestamp() (documentazione ).

>>> from datetime import datetime
>>> datetime.fromtimestamp(0)
datetime.datetime(1970, 1, 1, 1, 0)
>>> datetime.fromtimestamp(1268816500)
datetime.datetime(2010, 3, 17, 10, 1, 40)

Da Python datetime a UNIX timestamp:

>>> import time
>>> time.mktime(datetime(2010, 3, 17, 10, 1, 40).timetuple())
1268816500.0