Python String isalnum() Method

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Python String isalnum()

The isalnum() method checks whether all the characters of the string are alphanumeric or not.

In python, alphanumeric is a sequence of characters which consists of either alphabets (a-z or A-Z) or numbers (0 - 9).

Note: This method does not allow special characters: (space)!#%&? etc.

Example

Python Compiler
str1 = "python" str2 = "123" str3 = "python 123" str4 = "python123" print(str1.isalnum()) # True print(str2.isalnum()) # True print(str3.isalnum()) # False print(str4.isalnum()) # True

Syntax

txt.isalnum()

Parameter Values

It does not take any parameter.

Return Value

ValueExplanation
True If this string is an alphanumeric.
False If this string is not an alphanumeric.

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