a myList matrix char matrix [0,1,0,0,0,0],[1,0,1,1,0,0],[0,1,0,1,1,0],[0,1,1,0,0,0],[0,0,1,0,0,1],[0,0,0,0,1,0] char = 'a' i len(matrix) j i + 1, len(matrix[0]) matrix[i][j] == 1 chr(ord(char) + i) + " - " + chr(ord(char) + j) []