In this tutorial, We will see the python string isalnum() method with examples.
isalnum() Method
The isalnum() method is one of the methods in a python string. In isalnum, alnum is a combination of 2 words. al and num, here al means alphabets(a-z, A-Z) and num means numbers(0-9).
Python string isalnum() method checks all the characters in the string are alphabets(a-z, A-Z) or digit(0-9).
- Return True, If all the characters are alphabets(a-z , A-Z) or digit(0-9).
- Return False, If all the characters are not alphabets(a-z , A-Z) or digit(0-9).
Syntax of Python string isalnum() method
This is the syntax of the python string isalnum() method.
string.isalnum()
Example of the Python string isalnum() method
#Example 1 text = "windows12" #check the text contains only alphabets or digit. print(text.isalnum()) #output : True
#Example 2 text = "python3" print(text.isalnum()) #output: True #Exmaple 3 message = "python" msg = message.isalnum() print(msg) #output: False messg = "!23python" messg1 = messg.isalnum() print(messg1) # ! is not a alphabet or digit. #output: False
Program: Take a string from the user and check all the characters in a string are alphabets or digits.
message = input("Enter phone number")
msg = message.isalpha()
print(msg)Related Posts
