Python String isdecimal() Method

Python isdecimal() method checks whether all the characters in the string are decimal or not. Decimal characters are those have base 10.

This method returns boolean either true or false.

Syntax of Python String isdecimal() Method

It has the following syntax:

isdecimal()  

Parameters

No parameter is required.

Return

It returns either True or False.

Different Examples for isdecimal() Method in Python

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

Example 1

A simple example of isdecimal() method to check whether the string contains decimal value.

# Python isdecimal() method example  

# Variable declaration  

str = "Javatpoint"  

# Calling function  

str2 = str.isdecimal()  

# Displaying result  

print(str2)

Output:

False

Example 2

Let’s try to check floating value and see the outcome. It will return False if string is not decimal.

# Python isdecimal() method example  

# Variable declaration  

str = "123"     # True  

str3 = "2.50"   # False  

# Calling function  

str2 = str.isdecimal()  

str4 = str3.isdecimal()  

# Displaying result  

print(str2)  

print(str4)

Output:

True
False

Example 3

Here, we are checking special chars also.

# Python isdecimal() method example  

# Variable declaration  

str = "123"     # True  

str3 = "@#$"   # False  

# Calling function  

str2 = str.isdecimal()  

str4 = str3.isdecimal()  

# Displaying result  

print(str2)  

print(str4)

Output:

True
False