python convert string to lowercase

1// turn to lower/upper
2string = string.upper()
3string = string.lower()
4
5// check if all letter are lower or upper
6string.islower()
7string.isupper()

1# By Alan W. Smith and Petar Ivanov
2s = "Kilometer"
3print(s.lower())

1str = 'HELLO'
2print(str.lower())
3
4#prints "hello"

1str.lower()

1str = 'heLLo WorLD'
2print(str.lower())
3# hello world

1startString = "TeST StrIng"
2lowerCaseString = startString.lower()
3print(lowerCaseString)
4# Output -> "test string"