Python String casefold() Method (original) (raw)

Last Updated : 11 Apr, 2023

Python String casefold() method is used to convert string to lowercase. It is similar to the Python lower() string method, but the case removes all the case distinctions present in a string.

Python String casefold() Method Syntax

Syntax: string.casefold()

Parameters: The casefold() method doesn’t take any parameters.

Return value: Returns the case folded string the string converted to lower case.

Python String casefold() Method Example

Python3

string = "GEEKSFORGEEKS"

print ( "lowercase string: " , string.casefold())

Output:

lowercase string: geeksforgeeks

Difference between casefold() and lower() in Python

Python String casefold() Method is more aggressive in conversion to lowercase characters because it tends to remove all case distinctions in a String.

Python3

string = "ß"

print ( "Using lower():" , string.lower())

print ( "Using casefold():" , string.casefold())

Output:

Using lower(): ß Using casefold(): ss

Practical Example using Python String casefold() Method

Here, we have a Python String with characters of mixed cases. We are using the Python casefold() Method to convert everything to lowercase.

Python3

string = "WeightAGE oF THe DiScuSSiON"

print ( "Original String:" , string)

print ( "String after using casefold():" , string.casefold())

Output:

Original String: WeightAGE oF THe DiScuSSiON String after using casefold(): weightage of the discussion