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'],['g','h','i']]

and I want my function to come up with

newArray = [['a','d','g'],['b','e','h'],['c', 'f', 'i']]

So in other words, if I were to print this 2D array as columns and rows I would like the rows to turn into columns and columns into rows.

I made this so far but it doesn't work

def matrixTranspose(anArray): 

transposed = [None]*len(anArray[0]) 

for t in range(len(anArray)): 

for tt in range(len(anArray[t])): 

transposed[t] = [None]*len(anArray) 

transposed[t][tt] = anArray[tt][t] 

print transposed

Answer 1

You can use the below-mentioned code to transpose a matrix in Python:-

>>> [*zip(*theArray)] 

[('a', 'd', 'g'), ('b', 'e', 'h'), ('c', 'f', 'i')]