Retriving index value of an array in Python

Question

I am having a 2D array.

grid[0][0]= hat
grid[0][1]= cat
grid[1][1]= bat

Now, if I have the value cat, could I retrieve those index i.e [0][1]

Are you looking for something to search for a specific value's position in the array? — René Hoffmann, Aug 26 '15 at 07:33
@Jenny If you like my answer, you should accept this. Just `click` left side and accept. you will also get some point — Sakib Ahammed, Aug 26 '15 at 07:45

score 1 · Answer 1 · answered Aug 26 '15 at 07:15

1

You could iterate over all the elements like this:

def find(needle, hay):
  for x in hay:
    for y in x:
      if hay[x][y] == needle: return x, y
  return -1, -1

And then use this function

find('cat', grid)

answered Aug 26 '15 at 07:15

darkryder

I am declaring my multidimensional array this way grid=[[0 for x in range(5)] for x in range(5)] On calling find() it is throwing this error: TypeError: list indices must be integers, not list – Jenny Aug 27 '15 at 07:32

score 1 · Answer 2 · answered Aug 26 '15 at 07:16

1

Yes. you can do by

for i in grid:
    for j in i:
        if grid[i][j] == 'cat':
            print i, j

Output:

0 1

answered Aug 26 '15 at 07:16

Sakib Ahammed

2 Answers2