tablica = [
        [1,2,3],
        [4,5,6],
        [7,8,9]
    ]

'''
1 -> (0,0)
5 -> (1,1)
9 -> (2,2)
'''

def zeros(tab, n):
    for i in range(n):
        tab[i][i] = 0


'''
def parzyste2dV3(tab, wiersze, kolumny):
    for w in range(wiersze):
        for k in range(kolumny):
            e = tab[w][k]
        
            if e % 2 == 0:
                print(e)
'''                
        
def zerosV2(tab, n):
    for w in range(n):
        for k in range(n):
            if w==k:
                tab[w][k] = 0
        

zerosV2(tablica, 3)

for row in tablica:
    print(row)