Python String isdigit() method

Python String isdigit() method

The string.isdigit() method returns a boolean value true if all characters in the string are digits else for any other value it returns false.

Syntax

string.isdigit()

Parameter

NA

Return

This method returns a Boolean value true if all characters in the string are digits else for even one non-digit character it returns False.

Example 1

 # Python program explaining
 # the isdigit() method
 # initializing the string value
 strVal = "50800"
 # checking whether the passed string is a digit or not
 result = strVal.isdigit()
 # printing the isdigit() result
 print("The isdigit() method returns: ",result) 

Output

The isdigit() method returns:  True

Example 2

 # Python program explaining
 # the isdigit() method
 # initialising the string value
 strVal = "M0n1caG3ll3r"
 print("String 1:",strVal)
 # validating if and else condition
 if strVal.isdigit() == True:
    print("All characters of specified string are digits.")
 else:
     print("All the characters are not digits.")
 # passing another string
 strVal1="123234675"
 print("String 2:",strVal1)
 # again validating if and else condition
 if strVal1.isdigit() == True:
    print("All characters of specified string are digits.")
 else:
     print("All the characters are not digits.") 

Output

 String 1: M0n1caG3ll3r
 All the characters are not digits.
 String 2: 123234675
 All characters of specified string are digits. 

Example 3

 # Python program explaining
 # the isdigit() method
 strVal1 = '23455'
 print(strVal1.isdigit())
 #s = '²3455'
 # subscript is a digit
 strVal2 = '\u00A223455'
 print(strVal2.isdigit())
 # s = '½'
 # fraction is not a digit
 strVal3 = '\u00BD'
 print(strVal3.isdigit())
 #passing special characters in the string 
 strVal4 = '!@9876/0'
 print(strVal4.isdigit()) 

Output

 True
 False
 False
 False