pacman.py

# @ -> our hero
# G -> ghosts
# P -> pills
# . -> empty spaces
# | and - -> walls
map = [
    "|--------|",
    "|G..|..G.|",
    "|...PP...|",
    "|G...@.|.|",
    "|........|",
    "|--------|"
]

def find_pacman(map):
    pacman_x = -1
    pacman_y = -1

    for x in range(len(map)):
        for y in range(len(map[x])):
            if map[x][y] == '@':
                pacman_x = x
                pacman_y = y

    return pacman_x, pacman_y

pacman_tests.py

import unittest

from pacman import find_pacman


class PacmanTest(unittest.TestCase):

    def test_find_pacman(self):
        map = [
            "|--------|",
            "|G..|..G.|",
            "|...PP...|",
            "|G...@.|.|",
            "|........|",
            "|--------|"
        ]

        x, y = find_pacman(map)

        self.assertEqual(x, 3)
        self.assertEqual(y, 5)

    def test_find_pacman_when_pacman_doesnt_exist(self):
        map = [
            "|--------|",
            "|G..|..G.|",
            "|...PP...|",
            "|G.....|.|",
            "|........|",
            "|--------|"
        ]

        x, y = find_pacman(map)

        self.assertEqual(x, -1)
        self.assertEqual(y, -1)