pandas.core.groupby.DataFrameGroupBy.tshift¶
- DataFrameGroupBy.tshift(periods=1, freq=None, axis=0)¶
Shift the time index, using the index’s frequency if available
Parameters: periods : int
Number of periods to move, can be positive or negative
freq : DateOffset, timedelta, or time rule string, default None
Increment to use from datetools module or time rule (e.g. ‘EOM’)
axis : int or basestring
Corresponds to the axis that contains the Index
Returns: shifted : NDFrame
Notes
If freq is not specified then tries to use the freq or inferred_freq attributes of the index. If neither of those attributes exist, a ValueError is thrown