Convert the square matrix to matrix in Z form

def Zmatrx(Mx,r,c):
    for i in range(c-1):
       print(Mx[0][i],end=" ")
    for j in range(r-1):
        for k in range(c):
            if(j+k == c-1):
                print(Mx[j][k],end=" ")
                break
        print() #--> It is important
        print(end="  "*(k-1))
    for k in range(0,c):
        print(Mx[r-1][k],end=" ")
        

#Driver
'''
Matrx=[[4, 5, 6, 8],
       [1, 2, 3, 1],
       [7, 8, 9, 4],
       [1, 8, 7, 5]]

'''
#taking input manually
Matrx=[]
M=int(input("Row= "))
N=int(input("Column= "))

while True:
    arr=list(map(str,input().split(" ")))
    if arr != ['']:
        Matrx.append(list(map(int,arr)))
    else:
        break

Zmatrx(Matrx,M,N)

# WRITTEN BY legacyboy