嵌套函数 def print_indices(myString,findString): # your code is here index1=myString.find(findString) while index1 != -1: print(index1,end=' ') index1=myString.find(findString,index1+1) myString,findString = input().split(",") print_indices(myString,findString) 小白只是记录下自己学习的题目,嘻嘻。