Python String isdigit() Method

Python isdigit() method returns True if all the characters in the string are digits. It returns False if no character is digit in the string.

Python String isdigit() Method Syntax

It has the following syntax:

isdigit()  

Parameters

No parameter is required.

Return

It returns either True or False.

Different Examples for Python String isdigit() Method

Let’s see some examples of isdigit() method to understand it’s functionalities.

Example 1

A simple example of digit testing using isdigit() method.

# Python isdigit() method example  

# Variable declaration  

str = '12345'  

# Calling function  

str2 = str.isdigit()  

# Displaying result  

print(str2)

Output:

True

Example 2

It returns true only if all the characters are digit. See the example below.

# Python isdigit() method example  

# Variable declaration  

str = "12345"  

str3 = "120-2569-854"  

# Calling function  

str2 = str.isdigit()  

str4 = str3.isdigit()  

# Displaying result  

print(str2)  

print(str4)

Output:

True
False

Example 3

We can use it in programming to check whether a string contains digits or not.

# Python isdigit() method example  

# Variable declaration  

str = "123!@#$"  

if str.isdigit() == True:  

    print("String is digit")  

else:  

    print("String is not digit")

Output:

String is not digit