Of pytest and lru_cache in Python

levitation.py

from functools import lru_cache

from spells import cast_spell


@lru_cache(maxsize=2)
def levitate(target):
    """
    Levitates `target` with the "Wingardium Leviosa" spell.
    :param str target: Object that you would like to levitate
    :returns: None
    """
    cast_spell(spell='Wingardium Leviosa', on=target)