# Python: can someone point out what is wrong?

• I am practicing python. the solution works on my other python terminal. But for some reason, it won't pass the [[0,1]] matrix. the result is weird. Here is my code. I appreciate any comment.

i) I created an empty matrix with the same dimension and filled it with all zeros.
ii) I tested each row or column to see if the product of all element equals to 0. If not, I add that row or column number into a list, row or col.
iii) I assigned the elements indicated by the positions from the list to the empty matrix and fill in all the non-zeros.

Thanks.

class Solution(object):
def setZeroes(self, matrix):

``````    self.matrix = matrix

m = len(self.matrix)
n = len(self.matrix[0])
temp = [ [0]*n for i in range(m)]

row =[]
col = []

for i in range(m):
p=1
for j in range(n):
p *= self.matrix[i][j]
if p!=0:
row.append(i)

for j in range(n):
q=1
for i in range(m):
q *=self.matrix[i][j]
if q!=0:
col.append(j)

if row == [] or col==[]:
matrix = [[0]*n for i in range(m)]
else:
for h in row:
for k in col:
num = self.matrix[h][k]
temp[h][k] = num

matrix = temp``````

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