How to output an edge or edges from an adjacency matrix?

Question

Hi, everyone!
I've been stuck at 26.2 Practice for Python Data Structures.
How to output an edge or edges from an adjacency matrix without NetworkX?
A little prompt, please!

Regards, Andrei

x = X(5)

x.add_friend(1, 3)
x.add_friend(1, 5)
x.add_friend(2, 5)
x.add_friend(2, 4)
x.add_friend(4, 5)

n = int(input())
#your code goes here
for row in x.adj:
print()
for val in row:
print('{:4}'.format(val), end="")

Answer 1

You don't need for loop just print(sum(x.adj[n-1]))

Answer 2

Thanks, Alexey!
The right code is:

count = 0
for i in x.adj[n-1]:
if i == 1:
count += 1
else:
pass
print(count)

The key point was x.adj[n-1]!!