Monday, September 16, 2019

Python String - isdigit() method (With Examples)

isdigit() is an in-built method in python which is used for string manipulations. isdigit() returns True if all characters in the string are digits, else it returns False. This Python String Method does not take any parameters.

Syntax

string.isdigit()

Returns

True - If all the characters in the string are digits.
False - If 1 or more non-digit characters are present in string.

Example 1

# checking for digit using isdigit
str = '987654321'
print(str.isdigit())

str = 'Houseno22'
print(str.isdigit())

Output 
True
False

Example 2

# Checking for superscripts or subscripts with isdigit
str = '550\u2076'
print(str.isdigit())

Output 
True

Note: fractions, roman numerals are not considered digits, hence isdigit() returns False. This method will work with unsigned integers, superscripts or subscripts.

Further Read:

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