String casefold () method is used to implement case-insensitive string matching. It is similar to the string lower () method, but case removes all case differences present in the string. those. ignore cases when comparing.
Syntax :
string.casefold () Parameters: the casefold doesn’t take any parameters. return value: it return the casefolded string the string converted to lower case.
Examples
- Convert string to lowercase
# Python program to convert string to lowercase
string
=
"GEEKSFORGEEKS"
# print lowercase string
print
(
"lowercase string: "
, string.casefold ())
Output:
lowercase string: pythonengineering
- Check if the string is a palindrome
# A program to check if the string
# palindrome or not
# change this value for another output
str
=
’ pythonengineering’
# make it suitable for case insensitive comparison
str
=
str
. casefold ()
# flip the line
rev_str
=
reversed
(
str
)
# check if the string is its inverse
if
list
(
str
)
=
=
list
(rev_str):
print
(
"palindrome "
)
else
:
print
(
"not palindrome"
)
Output:
not palindrome
- Count the vowels in a line
# Program for counting the number of each
# vowel string
# vowel string
v
=
’aeiou’
# change this value for a different result
str
=
’Hello, have you try pythonengineering?’
# user input
# str = input ( & quot; Enter the string: & quot;)
# case insensitive
str
=
str
. casefold ()
# make a dictionary with each vowel key and value 0
c
=
{}. fromkeys (v,
0
)
# count vowels
for
char
in
str
:
if
char
in
c:
c [char]
+
=
1
print
(c)
Output:
{’o’: 3,’ e’: 6, ’a’: 1,’ i’: 0, ’u’: 1}
This article courtesy of Shivani Bagel . If you are as Python.Engineering and would like to contribute, you can also write an article using contribute.python.engineering or by posting an article contribute @ python.engineering. See my article appearing on the Python.Engineering homepage and help other geeks.
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