如何在 Python 中使用任何进入 for 循环的方式创建新列表？

Question

i want after end second for-loop the create new list, in other words when j increment define new list

the code is:

for j in range(0, countOfAtt):
    for i in range(j, len(content3), countOfAtt):
        list1.append(content3[i])

thank you in advance

Answer 1

Does this work?

final_list = []  # this will hold all the lists you created in for loop
for j in range(0, countOfAtt):
    mylist = []   # initiate a new list
    for i in range(j, len(content3), countOfAtt):
        mylist.append(content3[i])
    final_list.append(mylist)

Answer 2

This will give you a new list (with whatever you were trying to put in it) for every j :

[[content3[i] for i in range(j, len(content3), countOfAtt)] for j in range(countOfAtt)]

If it doesn't give you what you want, then you'll have to show samples of the data you have before the loops, and of the output you desire, so we could check the logic.