Python String isalnum() Method
Python isalnum() method checks whether the all characters of the string is alphanumeric or not. A character which is either a letter or a number is known as alphanumeric. It does not allow special chars even spaces.
No parameter is required.
It returns either True or False.
Let's see some examples of isalnum() method to understand it's functionalities.
Python String isalnum() Method Example 1
Python String isalnum() Method Example 2
If there is a space anywhere in the string, it returns False. See the example below.
Python String isalnum() Method Example 3
Python String isalnum() Method Example 4
It returns True even the string is full of digits. See the example.
Note: This method returns True if any one of these isalpha(), isdecimal(), isdigit(), or isnumeric() returns True.