class Granny:
    def __init__(self, position, grid_size):
        self.pos = position
        self.size = grid_size
def create_granny(grid_size):
    grannies = []
    with open(file='houses.txt', mode='r', encoding='utf-8') as file:
        for l_index, line in enumerate(file):
            for h_index, if_house in enumerate(line):
                if if_house == '3':
                    granny = Granny(
                        [h_index*grid_size, l_index*grid_size], grid_size)
                    grannies.append(granny)
    return grannies