Python 3 – String isalnum() Method

Description

isalnum() method checks if a string consists of letters and numbers.

Syntax

Below is the syntax of the isalnum() method −

str.isalnum()

Parameters

None

Return Value

Returns true if all characters in the string are letters or numbers and there is at least one character; otherwise, returns false.

Example

The following example demonstrates the use of the isalnum() method.

#!/usr/bin/python3

str = "this2016" #This string has no spaces
print (str.isalnum())

str = "this is the string example....wow!!!"
print (str.isalnum())

Result

When running the above program, the following result is produced: −

True
False