Python String isnumeric()

The isnumeric() method checks if all the characters in the string are numeric.


pin = "523"

# checks if every character of pin is numeric print(pin.isnumeric())
# Output: True

isnumeric() Syntax

The syntax of the isnumeric() method is:


Here, isnumeric() checks if all characters in string are numeric or not.

isnumeric() Parameters

The isnumeric() method doesn't take any parameters.

isnumeric() Return Value

The isnumeric() method returns:

  • True -if all characters in the string are numeric
  • False -if at least one character is not a numeric

Example 1: Python isnumeric()

symbol_number = "012345"

# returns True as symbol_number has all numeric characters print(string1.isnumeric())
text = "Python3"
# returns False as every character of text is not numeric print(string2.isnumeric())



In the above example, we have used the isnumeric() method to check whether every character in symbol_number and text is numeric or not.

The method returns:

  • True - for symbol_number since every character in "012345" are numeric
  • False - for text since every character in "Python3" are not numeric

Example 2: isnumeric() with Other Numeric Types

Python treats mathematical characters like numbers, subscripts, superscripts, and characters having Unicode numeric value properties (like a fraction, roman numerals, currency numerators) as numeric characters.

The isnumeric() method returns True with these characters. For example:

# string with superscript 
superscript_string = '²3455'
# string with fraction value fraction_string = '½123'



Here, we have used the isnumeric() method with strings that contain superscript and fraction.

  • superscript_string.isnumeric() -returns True because '²3455' contains all numeric characters.
  • fraction_string.isnumeric() - returns True because '½123' contains all numeric characters.

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