■

>>> t = time.strptime("Dec  5 21:41:49 2004","%b %d %H:%M:%S %Y")
>>> t2 = time.strptime("Dec  5 22:41:49 2004","%b %d %H:%M:%S %Y")
>>> t2 - t
Traceback (most recent call last):
  File "", line 1, in ?
TypeError: unsupported operand type(s) for -: 'time.struct_time' and 'time.struct_time'
>>> time.mktime(t2) - time.mktime(t)
3600.0
>>> time.mktime(t2) - time.mktime(t) / 60
1083883267.1833334
>>> time.mktime(t2) - time.mktime(t) / 60 / 60
1101947928.3030555
>>> 3600 / 60
60
>>> (time.mktime(t2) - time.mktime(t)) / 60
60.0
>>> (time.mktime(t2) - time.mktime(t)) / 60 / 60
1.0