python itertools accumulate列表中元素逐个累加，贼好用，记一下list(accumulate([fitness/sum_fitness for fitness in fitness_list]))版权声明：本文为CodeFarmerKISS原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。原文链接：https://blog.csdn.net/CodeFarmerKISS/article/details/89240955