pandas datetime difference code example
Example 1: difference between 2 timestamps pandas
print pd.Timedelta(t2 - t1).seconds / 60.0
Example 2: datediff in seconds in pandas
t1 = pd.to_datetime('1/1/2015 01:00')
t2 = pd.to_datetime('1/1/2015 03:30')
print pd.Timedelta(t2 - t1).seconds / 3600.0