I have to get a pattern printed in this manner

Question

9 8 4 6 5 7 3 2 1
8 4 6 5 7 3 2 1
4 6 5 7 3 2 1
6 5 7 3 2 1
5 7 3 2 1
7 3 2 1
3 2 1
2 1
1

I have to swap 4 and 7...

Thank You in advance

Answer 1

a = [i for i in range(9,0,-1)]
b = a.index(4)
c = a.index(7)
a[b], a[c] = a[c], a[b]

for i in range(len(a)):
print(*a[i:])

Answer 2

Russ nailed it (I misunderstood the question 😜)

Answer 3

for i in range(9, 0 , -1):
a = [j for j in range(i, 0, -1)]
print(*a)

Answer 4

thank you both of you😊