def generation_iterator(environment_type: str, env_carac: List[int],
nb_animals: List[int], nb_generation: int) -> List:
""" Retourne un tableau des moyennes par génération """
animal_evolution = Generation(environment_type, env_carac, nb_animals)
nb_generation = int(nb_generation)
result = []
result.append(animal_evolution.calc_moyenne())
for generation in range(nb_generation):
survivors = animal_evolution.natural_selection(
animal_evolution.animals)
sorted_animals = animal_evolution.sort_by_fitness(survivors)
animal_evolution.animals = animal_evolution.reproduction(
sorted_animals)
result.append(animal_evolution.calc_moyenne())
return result
