Python replace string (upper or lower case) with another string

Question

I want to replace the word ?Month in a text with the word August.

text=text.replace('?Month','August')

The issue is that I don't want upper or lower case to matter in ?Month. Regardless if ?Month is upper or lower case (or a mixture) it shall be overwritten with August. See the examples below:

E.g: ?Month ->August 
?month -> August
?MONTH -> August
?moNth -> August

How do I do that?

Answer 1

Use a regular expression (via the re module ):

import re

text = re.sub(r'\?month', 'August', text, flags=re.IGNORECASE)

The re.IGNORECASE flag tells the regular expression engine to match text case-insensitively:

>>> import re
>>> text = 'Demo: ?Month ?month ?MONTH ?moNth'
>>> re.sub(r'\?month', 'August', text, flags=re.IGNORECASE)
'Demo: August August August August'

Answer 2

For the sport of it, without importing anything:

text = text.split(' ')
for i, s in enumerate(text): text[i] = 'August' if s.lower() == 'month' else text[i]

print((' ').join(text))

This will replace every occurence of s by August if s.lower() equals month