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Python String casefold() Method

Last Updated : 11 Apr, 2023
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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 the string after casefold transformation
print("String after using casefold():", string.casefold())


Output:

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


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