为 for 循环的每次迭代创建新列表

Question

I have a list of strings I want to append to two different lists. I can't create two separate lists within the for loop

Input=["1, 3, 4, 7, 13", "1, 2, 4, 13, 15"]
i=0     
for string in Input:
  list[i]=[]
  list[i].append(string)
  i+=1

This is the error I get: 'type' object does not support item assignment

Any advice will be appreciated

Answer 1

If you want to keep the numbers as strings:

[i.split(", ") for i in Input]
>> [['1', '3', '4', '7', '13'], ['1', '2', '4', '13', '15']]

If you want to change them to integers:

[[int(n) for n in i.split(", ")] for i in Input]
>> [[1, 3, 4, 7, 13], [1, 2, 4, 13, 15]]

Answer 2

I guess you only want to unpack the list, you can do it likewise:

f_list , s_list = Input