from typing import Any
from typing import Iterable


def is_atom(entity: Any) -> bool:
    """Everything that is NOT an iterable(except strings) are considered atoms.

    >>> is_atom("plain string")
        True
    >>> is_atom(1)
        True
    >>> is_atom([1, 2])
        False

    Added in version: 0.1.0
    """
    if isinstance(entity, str):
        return True
    else:
        return not isinstance(entity, Iterable)