pandas.Series.set_axis — pandas 2.2.3 documentation (original) (raw)

Series.set_axis(labels, *, axis=0, copy=None)[source]#

Assign desired index to given axis.

Indexes for row labels can be changed by assigning a list-like or Index.

Parameters:

labelslist-like, Index

The values for the new index.

axis{0 or ‘index’}, default 0

The axis to update. The value 0 identifies the rows. For Seriesthis parameter is unused and defaults to 0.

copybool, default True

Whether to make a copy of the underlying data.

Note

The copy keyword will change behavior in pandas 3.0.Copy-on-Writewill be enabled by default, which means that all methods with acopy keyword will use a lazy copy mechanism to defer the copy and ignore the copy keyword. The copy keyword will be removed in a future version of pandas.

You can already get the future behavior and improvements through enabling copy on write pd.options.mode.copy_on_write = True

Returns:

Series

An object of type Series.

Examples

s = pd.Series([1, 2, 3]) s 0 1 1 2 2 3 dtype: int64

s.set_axis(['a', 'b', 'c'], axis=0) a 1 b 2 c 3 dtype: int64