Stripping off the seconds in datetime python
dtwithoutseconds = dt.replace(second=0, microsecond=0)
http://docs.python.org/library/datetime.html#datetime.datetime.replace
I know it's quite old question, but I haven't found around any really complete answer so far.
There's no need to create a datetime object first and subsequently manipulate it.
dt = datetime.now().replace(second=0, microsecond=0)
will return the desired object
You can use datetime.replace to obtain a new datetime object without the seconds and microseconds:
the_time = datetime.now()
the_time = the_time.replace(second=0, microsecond=0)