YOU SAID:

snake_average = sum([sum([snake.fitness.values[0] for snake in population])for population in populations]) / sum([float(len(population)) for population in populations])

INTO JAPANESE

snake_average = 合計 ([合計 ([snake.fitness.values [0] 人口のヘビ]) 人口の人口])/人口の人口の sum([float(len(population))])