a=[[0]*2]*2
for i in range(3):
x,y,z=map(int,input().split())
a[x-1][y-1]=z
print(a)
Input:
1 1 4
1 2 1
2 2 2
output:
[ [ 4,2 ] ,[ 4 ,2 ] ]
But the op should be [ [ 4,1] ,[0,2] ] right?
What is going wrong here?
Its because of python’s pass by object reference
Use instead - a=[ [0]*2 for i in range(2) ]
Refer here for more details:
2 Likes
Thanks for clarifying : )