Question

Possible Duplicate:
Python row, column, matrix trouble

I’m writing a python program with with a given

matrix = [['A', 'B', 'C'], 
          ['D', 'E', 'F'], 
          ['G', 'H', 'I']]

I’m trying to write a code so that I can define the coordinates for each value in the matrix. I have this to define the rows and column to get a coordinate:

def getLoc(key, elem):
    row , col = 0 , 0
    for a in [j for i in key for j in i]:
        if a == elem:
            return row / len(key), col % len(key)
        col += 1
        row += 1

That works to give me the coordinate for the letter but to work from the coordinate to get the letter I use:

def find_char(key, row, col):
    for a in [j for i in key for j in i]:
        if a == row , col = 0 , 0
            return elem

This doesn’t give me a character. Why not?

Answer 1

I think find char should / could look like this

def find_char(key, row, col):
    return key[row][col]