mars.dataframe.Series.add_prefix¶
- Series.add_prefix(prefix)¶
Prefix labels with string prefix.
For Series, the row labels are prefixed.
- Parameters
prefix (str) – The string to add before each label.
- Returns
New Series with updated labels.
- Return type
Examples
>>> import mars.dataframe as md >>> s = md.Series([1, 2, 3, 4]) >>> s.execute() 0 1 1 2 2 3 3 4 dtype: int64
>>> s.add_prefix('item_').execute() item_0 1 item_1 2 item_2 3 item_3 4 dtype: int64