python convert string to sentence case

>>> s="OPERATOR FAIL TO PROPERLY REMOVE SOLID WASTE"
>>> s.capitalize()

Here is what the above code is Doing:
1. We create a string, s, and set it equal to “OPERATOR FAIL TO PROPERLY REMOVE SOLID WASTE”.
2. We call the .capitalize() method on our string, s.
3. This returns a new string with the first letter of s capitalized.