[Solved] String out of index

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Different methods can be used for removing leading and trailing spaces, for converting multiple spaces to one and to remove spaces before exclamation mark, comma etc: 

mystr = "  Hello  .       To  ,   the world !  "
print(mystr)

mystr = mystr.strip()               # remove leading and trailing spaces

import re                           # regex module
mystr = re.sub(r'\s+'," ", mystr)   # convert multiple spaces to one space.
mystr = re.sub(r'\s*([,.!])',"\\1", mystr)  # remove spaces before comma, period and exclamation etc.
print(mystr)

Output: 

  Hello  .       To  ,   the world !  
Hello. To, the world!

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solved String out of index