Get the last 4 characters of a string

 

This question already has an answer here:

  • Is there a way to substring a string in Python? 10 answers

    • Like this: 

    >>>mystr = "abcdefghijkl"
>>>mystr[-4:]
'ijkl'

    This slices the string's last 4 characters. The -4 starts the range from the string's end. A modified expression with [:-4] removes the same 4 characters from the end of the string: 

    >>>mystr[:-4]
'abcdefgh'

    For more information on slicing see this Stack Overflow answer. 

    str = "aaaaabbbb"
newstr = str[-4:]

    请参阅：http://codepad.org/S3zjnKoD

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