动态声明列表中的子列表

Question

I have a list PairObject which could have any number of elements.
eg PairObject = ['abc','efg','jkl'] . The elements of list PairObject keeps changing on different condition.

Now I have a list Price=[[],[],[],[]] where each sub-list within list Price is associated to each element of list PairObject so that the number of sub-lists in list Price is equal to the len(PairObject) .

the code is written something like this...

PairObject =['abc','efg','jkl']
Price=[[],[],[],[]]
for j in range(0,len(PairObject))
     Price[j].append()

Now my question is ... how can I dynamically declare Price, when I don't know the len(PairObject)... which could be 2,3,4 or any number...

Answer 1

If you mean you want

len(Price) == len(PairObject)

then you can declare Price as

Price = [[] for _ in range(len(PairObject))]