how to calculate time difftemnce in pandas datframe from week days 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