The combination of the characters of to_strip that appears at the front of each string will be removed. For instance, if to_strip="ab", then abA and baA will both become A.

By default, leading whitespaces (including newlines and tabs) will be removed.

Return Value

A new Series or Index.

Examples

Basic usage

By default, lstrip(~) removes leading whitespaces (including newlines and tabs):


        
        
            
                
                
                    s = pd.Series(["  ","a a","\na","\ta"])
s_stripped = s.str.lstrip()
s_stripped
                
            
            0       
1    a a
2      a
3      a
dtype: object

To confirm that the whitespaces have indeed been stripped, we print the length of each string:


        
        
            
                
                
                    s_stripped.str.len()
                
            
            0    0
1    3
2    1
3    1
dtype: int64

Specifying to_strip

To remove a combination of the characters "ab" at the front:


        
        
            
                
                
                    s = pd.Series(["abA","baA"])
s.str.lstrip("ab")
                
            
            0    A
1    A
dtype: object

Here, notice how "baA" got stripped down to "A" - this is because a combination of the specified characters is stripped ("ab" and "ba" in this case).

Published by Arthur Yanagisawa

Edited by 0 others

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Official Pandas Documentation

https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.Series.str.lstrip.html#pandas.Series.str.lstrip

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