python removing whitespace from string in a list

Question

I have a list of lists. I want to remove the leading and trailing spaces from them. The strip() method returns a copy of the string without leading and trailing

Answer 1

You don't need to count i, j yourself, just enumerate, also looks like you do not increment i, as it is out of loop and j is not in inner most loop, that is why you have an error

for x in networks:
    for i, y in enumerate(x):
        x[i] = y.strip()

Also note you don't need to access networks but accessing 'x' and replacing value would work, as x already points to networks[index]