DataFrame.shift(periods=1, freq=None, axis=0, **kwds)

Shift index by desired number of periods with an optional time freq

Parameters :

periods : int

Number of periods to move, can be positive or negative

freq : DateOffset, timedelta, or time rule string, optional

Increment to use from datetools module or time rule (e.g. ‘EOM’)

Returns :

shifted : same type as caller


If freq is specified then the index values are shifted but the data if not realigned