from typing import Any


def is_chars(obj: Any) -> bool:
    """Check if an object is one of the built-in character types.

    The built-in data types representing characters in Python 3 are:
        str, bytes, bytearray

    Arguments:
        obj: object to be checked

    Returns:
        True if the object is an instance of str, bytes or bytearray,
        otherwise False

    Examples:

    >>> is_chars('a')
    True
    >>> is_chars(b'011')
    True
    >>> is_chars(2)
    False

    """
    return isinstance(obj, (str, bytes, bytearray))