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Python String | isnumeric method

Programming
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Python
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Operations
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Documentation
schedule Mar 10, 2022
Last updated
local_offer Python
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tocTable of Contents
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Python's str.isnumeric() method returns a boolean indicating whether all characters in a string are numeric.

NOTE

A numeric character includes digit characters, and all characters having Unicode numeric value property (property value Numeric_Type = Digit, Numeric_Type = Decimal or Numeric_Type = Numeric). This includes subscripts, superscripts, fractions, roman numerals and currency numerators.

Parameters

No parameters.

Return value

A single boolean indicating whether or not all the characters in a string are numeric.

Examples

Numeric

To check whether all the characters in '123' are numeric:

a = '123'
a.isnumeric()
True

To check whether all characters in '\u00B2123' are numeric:

b = '\u00B2123'
b.isnumeric()
True
True

Note that '\u00B2123' is Unicode for '²123' hence we return True.

To check whether all characters in '\u00BD' are numeric:

c = '\u00BD'
c.isnumeric()
True
True

Note that '\u00BD' is Unicode for '½' hence we return True.

Non-numeric

To check whether all characters in '123A' are numeric:

d = '123A'
d.isnumeric()
False
False

As 'A' is not a numeric character False is returned.

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Published by Isshin Inada
Edited by 0 others
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