all Python 3Strings (str)function

str.isnumeric

character checks

True if all characters are numeric, including fractions and numerals (½, Ⅴ).

Syntax

s.isnumeric()

The widest of the three checks: fractions and Roman numerals return True even though neither int() nor float() can parse them. To get the value of such a character use unicodedata.numeric(); to validate input before int() use isdecimal instead.

Examples

print('123'.isnumeric())  # → True
print('½'.isnumeric())    # → True
print('1.2'.isnumeric())  # → False

See also

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