pandas.api.extensions.ExtensionArray.shift

ExtensionArray.shift(self, periods: int = 1, fill_value: object = None) → pandas.core.dtypes.generic.ABCExtensionArray [source]

Shift values by desired number.

Newly introduced missing values are filled with self.dtype.na_value.

New in version 0.24.0.

Parameters:	periods : int, default 1 The number of periods to shift. Negative values are allowed for shifting backwards. fill_value : object, optional The scalar value to use for newly introduced missing values. The default is self.dtype.na_value New in version 0.24.0.
Returns:	shifted : ExtensionArray

Notes

If self is empty or periods is 0, a copy of self is returned.

If periods > len(self), then an array of size len(self) is returned, with all values filled with self.dtype.na_value.