isnumeric() Python Method | Python String isnumeric()

Syntax of isnumeric() Method in Python

The syntax of the isnumeric python method is very simple. It does not take any parameters. We need to call or invoke the isnumeric python method on a string.

Here, string is an immutable sequence data type invoking the isnumeric() python method. For example: 123

Parameters of isnumeric() Method in Python

The isnumeric python method is called from a string. The isnumeric python method does not take any parameter. The isnumeric python method checks whether the method invoking string is numeric or not.

Return Values of isnumeric() Method in Python

The isnumeric python method returns the boolean value after checking whether the string is either alphabets or numbers.

• True The isnumeric python method returns True if the entire string is numeric (contain numbers/ fraction/ unicode/ exponents).

• False The isnumeric python method returns False if one or more characters are non numeric (contain character(s) other than numbers/ fraction/ unicode/ exponents).

Exceptions of isnumeric() Method in Python

Usually, the isnumeric python method does not raise an error if we use the correct syntax.

Even if the string calling the isnumeric() python method is numeric but contains white spaces (or empty spaces), the method returns False.

Check the example section below for a better understanding.

Example

Let us take some examples to understand the isnumeric() python method.

1. When the calling string does not contain spaces:

Output:

2. When the calling string contains spaces:

Output:

What is string.isnumeric() in Python?

The isnumeric python method is a built-in string handling method used to check whether all the string characters are numeric or not.

Examples of isnumeric() Method in Python

So far, we have learned all about the isnumeric python method. Now, let us take some examples and understand the method better.

Example 1: Working of isnumeric()

The isnumeric in python returns a boolean value. If all the characters of the calling string are numeric (a string containing numbers or fractions or Unicode or exponents), the isnumeric() method returns True, else returns False.

Output:

Example 2: How to use isnumeric()

We can invoke the isnumeric python method on a string. The isnumeric in python return True if the calling string is numeric. On the other hand, if the calling string contains characters other than numbers or fractions or Unicode or exponents like a-z or A-Z or special symbols, then the isnumeric() method returns False.

Output:

See Also (Related Functions)

• isalnum in python
• isdigit in python