Transpose of a matrix in python

transpose.py

def trans(m):
    numRows = len(m)
    numCols = len(m[0])
    tMatrix = [[0 for x in range(numRows)] for y in range(numCols)]
    for i in range(0,numCols):
        for j in range(0,numRows):
            tMatrix[i][j] = m[j][i]
    return tMatrix

print(trans([[1,3,5],[2,4,6]]))