Matrix Transpose in Python

Question

I am trying to create a matrix transpose function for python but I can\'t seem to make it work. Say I have

theArray = [[\'a\',\'b\',\'c\'],[\'d\',\'e\',\'f\         


        

Answer 1

The problem with your original code was that you initialized transpose[t] at every element, rather than just once per row:

def matrixTranspose(anArray):
    transposed = [None]*len(anArray[0])
    for t in range(len(anArray)):
        transposed[t] = [None]*len(anArray)
        for tt in range(len(anArray[t])):
            transposed[t][tt] = anArray[tt][t]
    print transposed

This works, though there are more Pythonic ways to accomplish the same things, including @J.F.'s zip application.