Series.str.
lstrip
Remove leading characters.
Strip whitespaces (including newlines) or a set of specified characters from each string in the Series/Index from left side. Equivalent to str.lstrip().
str.lstrip()
to_strip (str or None, default None) – Specifying the set of characters to be removed. All combinations of this set of characters will be stripped. If None then whitespaces are removed.
Series or Index of object
See also
Series.str.strip
Remove leading and trailing characters in Series/Index.
Series.str.lstrip
Remove leading characters in Series/Index.
Series.str.rstrip
Remove trailing characters in Series/Index.
Examples
>>> import mars.tensor as mt >>> import mars.dataframe as md >>> s = md.Series(['1. Ant. ', '2. Bee!\n', '3. Cat?\t', mt.nan]) >>> s.execute() 0 1. Ant. 1 2. Bee!\n 2 3. Cat?\t 3 NaN dtype: object
>>> s.str.strip().execute() 0 1. Ant. 1 2. Bee! 2 3. Cat? 3 NaN dtype: object
>>> s.str.lstrip('123.').execute() 0 Ant. 1 Bee!\n 2 Cat?\t 3 NaN dtype: object
>>> s.str.rstrip('.!? \n\t').execute() 0 1. Ant 1 2. Bee 2 3. Cat 3 NaN dtype: object
>>> s.str.strip('123.!? \n\t').execute() 0 Ant 1 Bee 2 Cat 3 NaN dtype: object