How to delete the 1 and 2 characters at the beginning and end of python

This article introduces the knowledge of "how to delete the 1 and 2 characters at the beginning and end of python". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Specific steps for use:

1. First open the python editor and create a new python project.

2. Define a string in the python project.

Str = '1a2b12c21'

3. Use the strip method to delete the 1 and 2 characters at the beginning and end.

Str.strip ('12') # remove the 1 and 2 from the head and tail

Return the result:

'a2b12c'

Related sample code:

> str ='ab cd'

> str

'ab cd'

> str.strip () # Delete the leading and trailing spaces

'ab cd'

> str.lstrip () # Delete the opening space

'ab cd'

> str.rstrip () # Delete the trailing space

'ab cd'

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