Python String isnumeric() Method

By IncludeHelp Last updated : December 15, 2024

Python String isnumeric() Method

The isnumeric() is an in-built method in Python, which is used to check whether a string contains only numeric values or not.

Numeric contain all decimal characters and the fraction type values like (Half (½), one fourth (¼)). This method is different from isdecimal() Method because it can check other numeric values except only decimal characters (from 0 to 10).

Note

Numeric values contains decimal characters (all digits from 0 to 9) and fractional part of the values like ½, ¼.
String should be Unicode object - to define a string as Unicode object, we use u as prefix of the string value.

Syntax

String.isnumeric();

Parameters

None

Return Type

true - If all characters of the string are numeric then method returns true.
false - If any of the characters of the string is not a numeric then method returns false.

Example 1

# numeric values (decimal characters)
str1 = u"362436"
print(str1.isnumeric())

# numeric values (no decimal)
str2 = u"½¼"
print(str2.isnumeric())

# numeric values (with decimals)
str3 = u"½¼3624"
print(str3.isnumeric())

# numeric values with alphabets
str4 = u"Hello½¼3624"
print(str4.isnumeric())

Output

True
True
True
False

Example 2

# Example of Python String isnumeric() Method
str1 = "12345"
print(str1.isnumeric())  # True

str2 = "123.45"
print(str2.isnumeric())  # False

str3 = "一二三四五"  # Chinese numerals
print(str3.isnumeric())  # True

str4 = "²³"  # Superscript numerals
print(str4.isnumeric())  # True

str5 = "123abc"
print(str5.isnumeric())  # False

Output

True
False
True
True
False