How to create a list or tuple of empty lists in Python?

Question

I need to incrementally fill a list or a tuple of lists. Something that looks like this:

result = []
firstTime = True
for i in range(x):
    for j in someLis         


        

Answer 1

Why not keep it simple by just appending the list in appropriate loop

result = []
for i in range(x):
    result.append([])
    for j in someListOfElements:
        result[i].append(j)

[Edit: Adding example]

>>> someListOfElements = ['a', 'b', 'c']
>>> x = 3
>>> result = []
>>> for i in range(x):
...     result.append([])
...     for j in someListOfElements:
...         result[i].append(j)
... 
>>> 
>>> result
[['a', 'b', 'c'], ['a', 'b', 'c'], ['a', 'b', 'c']]