The casefold() method converts strings to casefolded format for caseless matching.
Example
#!/usr/bin/python3
# -*- coding: UTF-8 -*-
str = "AaABB"
print (str.casefold())
str = "HELLO WORLD"
print (str.casefold())
Output:
str: aaabb
str: hello world
Syntax
str.casefold()
Parameters
The method doesn’t take any parameters.
Return Value
It returns the casefolded string, i.e. the string converted to lower case.