In Python, isalpha() is a built-in method used for string handling.
The isalpha() methods returns “True” if all characters in the string are alphabets, Otherwise, It returns “False”.
This function is used to check if the argument contains any alphabets characters such as :
string.isalpha() Parameters: isalpha() does not take any parameters Returns : 1.True- If all characters in the string are alphabet. 2.False- If the string contains 1 or more non-alphabets.
Input : string = 'Ayush' Output : True Input : string = 'Ayush Saxena' Output : False Input : string = 'Ayush0212' Output : False
True False False
Errors and Exceptions
- It contains no arguments , therefore an error occurs if a parameter is passed
- Both uppercase and lowercase alphabets return “True”
- Space is not considered to be alphabet, therefore it returns “False”
Application : Given a string in python, count number of alphabets in the string and print the alphabets.
Input : string = 'Ayush Saxena' Output : 11 AyushSaxena Input : string = 'Ayush0212' Output : 5 Ayush
1. Initialise a new string and variable counter to 0.
2. Traverse the given string character by character upto its length, check if character is an alphabet.
3. If it is an alphabet, increment the counter by 1 and add it to a the new string, else traverse to the next character.
4. Print the value of the counter and the new string.
11 AyushSaxena 5 Ayush
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