The casefold()
method removes all case distinctions present in a string. It is used for caseless matching, i.e. ignores cases when comparing.
For example, the German lowercase letter ß
is equivalent to ss
. However, since ß
is already lowercase, the lower()
method does nothing to it. But, casefold()
converts it to ss
.
The syntax of casefold()
is:
string.casefold()
Parameters for casefold()
The casefold()
method doesn't take any parameters.
Return value from casefold()
The casefold()
method returns the case folded string.
Example 1: Lowercase using casefold()
string = "PYTHON IS AWESOME"
# print lowercase string
print("Lowercase string:", string.casefold())
Output
Lowercase string: python is awesome
Example 2: Comparison using casefold()
firstString = "der Fluß"
secondString = "der Fluss"
# ß is equivalent to ss
if firstString.casefold() == secondString.casefold():
print('The strings are equal.')
else:
print('The strings are not equal.')
Output
The strings are equal.