qq_41506927的博客

先使用lambda将list元素逐个转化成str类型a = [1,2,3,4,5]b = list(map(lambda x:str(x), a))c = [str(x) for x in a] # 效果一样之后使用join方法合成字符串b = ' '.join(b)完整代码a = [1,2,3,4,5]b = list(map(lambda x:str(x), a))b = ' '.join(b)print(b)f=open("./123.txt", 'w')for i in