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Python isdigit

The Python isdigit string function is used to check whether the character is a digit or not. In this section, we discuss how to write or use this string isdigit Function in Python Programming with example.

Python isdigit Syntax

The syntax of is digit in Python function is

String_Value.isdigit()

The isdigit string function returns a Boolean value as an output.

  • If the String_Value is a valid digit, then it returns TRUE
  • If the String_Value is not a valid digit, then the string isdigit function returns FALSE

Program to Check for Digit using Python isdigit function

The following set of examples helps you understand the string isdigit function and how to use it.

# Python isdigit Method Example

Str1 = '123456789';
print('First Output of a isdigit() method is = ', Str1.isdigit())

Str2 = '     ';
print('Output of a isdigit() method For Empty Space is = ', Str2.isdigit())

# Performing isdigit() function directly
Str3 = 'Find Tutorial at Tutorial Gateway'.isdigit()
print('Second Output of a isdigit() method is = ', Str3)

# Performing isdigit() on both Digits and Alphabets
Str5 = '123456789a'.isdigit()
print('Third Output of a isdigit() method is = ', Str5)

# Performing isdigit() on Float values
Str6 = '1234.67'.isdigit()
print('Fourth Output of a isdigit() method is = ', Str6)

# Performing isdigit() on Negative Values  
Str7 = '-1234'.isdigit()
print('Fifth Output of a isdigit() method is = ', Str7)
Python IsDigit Function 1

First, we declared the String variable Str1 and assigned corresponding value (Integer Value) using the following statement. Next, we used the isdigit function to check whether the string is a digit or not. As you can see from the below code, it is a valid digit. So, the isdigit String function returns TRUE.

Str1 = '123456789';
print('First Output of a isdigit() method is = ', Str1.isdigit())

The following Python statement checks whether the Empty space is a valid digit or not.

Str2 = '     ';
print('Output of a isdigit() method For Empty Space is = ', Str2.isdigit())

Next, we are using the string isdigit function in python on the following group of words

Str3 = 'Find Tutorial at Tutorial Gateway'.isdigit()
print('Second Output of a isdigit() method is = ', Str3)