casefold() string in Python

The casefold() string method is used to implement caseless string matching. It is similar to lower() string method but case removes all the case distinctions present in a string. i.e 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

1. Convert string in lower case
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   # Python program to convert string in lower case string =" GEEKSFORGEEKS"    # print lowercase string print(" lowercase string: ",string.casefold())

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   Output:

   lowercase string:   geeksforgeeks
   

2. Check if a string is palindrome
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   # Program to check if a string #  is palindrome or not    # change this value for a different output str = 'geeksforgeeks'    # make it suitable for caseless comparison str = str.casefold()    # reverse the string rev_str = reversed(str)    # check if the string is equal to its reverse if str == rev_str:       print("palindrome") else:       print(" not palindrome")

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   Output:

   not palindrome
   

3. Count vowels in a string
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   # Program to count the number of each  # vowel in a string    # string of vowels v = 'aeiou'    # change this value for a different result str = 'Hello, have you try geeksforgeeks?'    # input from the user # str = input("Enter a string: ")    # caseless comparisions str = str.casefold()    # make a dictionary with each vowel a key and value 0 c = {}.fromkeys(v,0)    # count the vowels for char in str:           if char in c:                   c[char] += 1 print(c)

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   Output:

   
   
   
   

   {'o': 3, 'e': 6, 'a': 1, 'i': 0, 'u': 1}
   

This article is contributed by Shivani Baghel. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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