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Python String | isalpha method

schedule Aug 11, 2023
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Python's `str.isalpha()` method returns a `boolean` indicating whether all characters in a string are alphabetic (a - z).

No parameters.

Return value

A single `boolean` indicating whether or not all the characters in a string are alphabet letters. If the string is empty `False` is returned.

Examples

Basic usage

To check whether all characters in `'Sky Towner'` are alphabetic:

``` x = 'Sky Towner'x.isalpha()False False ```

The space character is not alphabetic, hence `False` is returned.

To check whether all characters in `'SkyTowner'` are alphabetic:

``` y = 'SkyTowner'y.isalpha() True ```

To check whether all characters in `'SkyTowner!'` are alphabetic:

``` z = 'SkyTowner!'z.isalpha() False ```

The `!` character is not alphabetic, hence `False` is returned.

Empty string

If the string is empty, `False` is returned:

``` a = ''a.isalpha() False ```
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