Program to Transpose a Matrix in Python

# Program to transpose matrices

x = [[12,7,3],
    [4 ,5,6],
    [7 ,8,9]]
finalMat=[]
for i in range(len(x[0])):
    eachList=[]
    for j in range(len(x)):
        ag=x[j][i]
        eachList.append(ag)
    finalMat.append(eachList)

for k in finalMat:
    print(k)