How to Remove extra space from a string?

Question

" My name is Python? "

1. string have not any space in beginning.
2. Have only one space between each word.
3. String end without space.

=> "My name is Python?"

Answer 1

Is this question specific to Python? In Python, there is a str.strip() method which allows you to remove leading and trailing whitespaces from a string. That solves #1 and #3.

https://docs.python.org/3/library/stdtypes.html#str.strip

As for #2, you can tokenize the string into a list of words using whitespaces as separator, and then rejoin the list into a stingle string, removing duplicate whitespaces. Something like

" ".join("This has many spaces".split())

Answer 2

You can do it in more than one way you can use split of regular expressions like this

import re

print(re.sub(' +',' ', 'my name is Python? '))

print(' '.join('my name is python? '.split()))