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Python isdigit

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Python isdigit is one of the Python String Method used to check whether the character is a digit or not. In this section, we discuss how to write isdigit Function in Python Programming with example.

Python isdigit Syntax

The syntax of is digit in Python function is

String_Value.isdigit()
  • String_Value: Please select a valid String literal.

The isdigit function returns a Boolean value as output.

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

Program to Check for Digit using Python isdigit function

The following set of examples helps you understand the 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)

OUTPUT

Python IsDigit Function 1

ANALYSIS

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, 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 isdigit function in python on a group of words

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