Python 3 7 isnumeric string method

### tutorial: python 3.7 `isnumeric()` string method

the `isnumeric()` method in python is a built-in method used to check whether all the characters in a string are numeric (0-9) or not. it returns `true` if all characters in the string are numeric, and `false` otherwise.

#### syntax:

#### parameters:
- this method does not take any parameters.

#### return value:
- it returns `true` if all characters in the string are numeric, else it returns `false`.

#### example:
let's see an example to understand how the `isnumeric()` method works:

in the above example, the `isnumeric()` method is used to check whether the characters in the strings `numeric_string` and `non_numeric_string` are numeric or not. the method returns `true` for the first string since all characters are numeric, and `false` for the second string since it contains non-numeric characters.

#### note:
- the `isnumeric()` method only considers characters that are classified as numeric in unicode. this means that characters such as fractions, superscript digits, and roman numerals are not considered numeric by this method.

this tutorial covered the `isnumeric()` method in python 3.7 with an example to help you understand its usage and functionality.

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