Python re.sub(): how to substitute all 'u' or 'U's with 'you'

Question

I am doing some text normalization using python and regular expressions. I would like to substitute all \'u\'or \'U\'s with \'you\'. Here is what I have done so far:

Answer 1

it can also be achieved with below code

import re

text = 'how are u? umberella u! u. U. U@ U# u '
print (re.sub (r'[uU] ( [^a-z] )', r' you\1 ', text))

or

print (re.sub (r'[uU] ( [\s!,.?@#] )', r' you\1 ', text))