How to get started with Python basics how to use the Strip () function to go to a space \n\r\t

python3.4 Study notes (20) Python strip () function de-whitespace \n\r\t function usage

In Python, there are three functions in the string handler function that go to whitespace (including ' \ n ', ' \ R ', ' \ t ', '):

Strip at the same time remove both left and right spaces
Lstrip Remove the left space
Rstrip Remove the right space

Specific examples are as follows:

>>>a= "Gho stwwl" >>>a.lstrip () ' Gho stwwl ' >>>a.rstrip () ' Gho stwwl ' >>>a.strip () ' Gho STWWL '

Declaration: S is a string, RM is a sequence of characters to be deleted
S.strip (RM) Remove the characters from the beginning and end of the s string in the RM delete sequence
S.lstrip (RM) Delete the character in the S string at the beginning of the RM delete sequence
S.rstrip (RM) Removes the character from the end of the S string that is located in the RM delete sequence

Attention:
1. When RM is empty, the default is to remove the whitespace characters (including ' \ n ', ' \ R ', ' \ t ', ')

>>> a = ' 123 ' >>> a.strip () ' 123 ' >>> a= ' \t\tabc ' abc ' >>> a = ' sdff\r\n ' >>> a . Strip () ' SDFF '

2. The RM delete sequence here is deleted as long as the character on the edge (beginning or end) is within the delete sequence.

>>> a = ' 123abc ' >>> a.strip (' + ') ' 3ABC ' results are the same >>> a.strip (' + ') ' 3ABC '

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