python string to lower

1my_str = "Hello World"
2my_str.lower()
3print(my_str) # outputs "hello world" on the terminal

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

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

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

1string.upper()
2string.lower()

1# example string
2string = "THIS SHOULD BE LOWERCASE!"
3print(string.lower())
4
5# string with numbers
6# all alphabets whould be lowercase
7string = "Th!s Sh0uLd B3 L0w3rCas3!"
8print(string.lower())