Python string isnumeric














































Python string isnumeric



Python String : isnumeric()


This article demonstrates how to use of isnumeric() method in string.

The isnumeric() method returns True if all characters in a string are numeric characters. If not, it returns False.

A numeric character has following properties:

  • Numeric_Type=Decimal
  • Numeric_Type=Digit
  • Numeric_Type=Numeric

In Python, decimal characters (like: 0, 1, 2..), digits (like: subscript, superscript), and characters having Unicode numeric value property (like: fraction, roman numerals, currency numerators) are all considered numeric characters.

You can write the digit and numeric characters using unicode in the program. For example:

# s = ''
s = '\u00BD'


Syntax :

string.isnumeric()


Parameter Values :

The islnumeric() doesn't take any parameters.

Returns :

The isnumeric() method returns:

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


Sample Code :

1.
string = '1242323'
print(string.isnumeric())

#s = '3455'
string = '\u00B23455'
print(string.isnumeric())

# s = ''
string = '\u00BD'
print(string.isnumeric())

string='python12'
print(string.isnumeric())
Output :
True
True
True
False


2.
#string = '3455'
string = '\u00B23455'

if string.isnumeric() == True:
  print('All characters are numeric.')
else:
  print('All characters are not numeric.')
Output :
All characters are numeric.


Hence,we can see above function isnumeric() returns true if a unicode string contains only numeric characters and false otherwise.


**********END OF ARTICLE **********


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