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

Please include runnable sample code, so we can run the code ourself to quickly see exactly what it is you want to do. It looks like you just want this:

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