Convert UPPERCASE string to sentence case in Python

Question

How does one convert an uppercase string to proper sentence-case? Example string:

\"OPERATOR FAIL TO PROPERLY REMOVE SOLID WASTE\"

Using

Answer 1

This will work for any sentence, or any paragraph. Note that the sentence must end with a . or it won't be treated as a new sentence. (Stealing .capitalize() which is the better method, hats off to brianpck for that)

a = 'hello. i am a sentence.'
a = '. '.join(i.capitalize() for i in a.split('. '))