I want to figure it out how to display a maze.

The below URL is general presentation. Actually I have to do many things but first trying to do maze.1 input.

and tex. file

\documentclass[10pt]{article} \usepackage{tikz} \usetikzlibrary{shapes.misc} \usepackage[margin=0cm]{geometry} \pagestyle{empty} \tikzstyle{every node}=[cross out, draw, red] \begin{document} \vspace*{\fill} \begin{center} \begin{tikzpicture}[x=0.5cm, y=-0.5cm, ultra thick, blue] % Walls   \draw (0,0) -- (1,0);   \draw (4,0) -- (5,0);   \draw (6,0) -- (7,0);   \draw (0,1) -- (1,1);   \draw (3,1) -- (4,1);   \draw (0,2) -- (1,2);   \draw (2,2) -- (6,2);   \draw (2,3) -- (3,3);   \draw (5,3) -- (6,3);   \draw (0,4) -- (1,4);   \draw (4,4) -- (5,4);   \draw (6,4) -- (7,4);   \draw (0,5) -- (1,5);   \draw (3,5) -- (5,5);   \draw (0,1) -- (0,5);   \draw (1,1) -- (1,2);   \draw (1,4) -- (1,5);   \draw (2,0) -- (2,2);   \draw (2,3) -- (2,5);   \draw (3,0) -- (3,1);   \draw (4,1) -- (4,3);   \draw (5,0) -- (5,1);   \draw (5,4) -- (5,5);   \draw (6,0) -- (6,2);   \draw (6,3) -- (6,5);   \draw (7,1) -- (7,2);   \draw (7,4) -- (7,5); % Pillars   \fill[green] (1,3) circle(0.2);   \fill[green] (7,3) circle(0.2);   \fill[green] (3,4) circle(0.2); % Inner points in accessible cul-de-sacs   \node at (2.5,0.5) {};   \node at (2.5,1.5) {};   \node at (3.5,1.5) {};   \node at (4.5,4.5) {};   \node at (6.5,4.5) {}; % Entry-exit paths without intersections   \draw[dashed, yellow] (3.5,0.5) -- (4.5,0.5);   \draw[dashed, yellow] (4.5,1.5) -- (5.5,1.5);   \draw[dashed, yellow] (3.5,-0.5) -- (3.5,0.5);   \draw[dashed, yellow] (4.5,0.5) -- (4.5,1.5);   \draw[dashed, yellow] (5.5,-0.5) -- (5.5,1.5); \end{tikzpicture} \end{center} \vspace*{\fill} \end{document} 

class MazeError(Exception):   def __init__(self, message):     self.message = message class Maze:   def __init__(self, filename):     pass     # REPLACE PASS ABOVE WITH YOUR CODE     # POSSIBLY DEFINE OTHER METHODS       def analyse(self):     pass     # REPLACE PASS ABOVE WITH YOUR CODE         def display(self):     pass     # REPLACE PASS ABOVE WITH YOUR CODE 

here is what I've done so far

import sys import os class MazeError(Exception):   def __init__(self,message): # Call the base class constructor with the parameters     super(MazeError, self).__init__(message)     class Maze:   def __init__(self, filename):     self.filename = filename     file = open(filename, 'r')       def validate_maze(self, maze_array):     allowed_digits = (0,1,2,3)     maze_list = []     for line in maze_array:        if line:            if len(line)==1:           try:             line = list(map(int, str(line[0])))           except:             raise MazeError('Incorrect input.')                     else:           try:             line = [int(i) for i in line]           except:             raise MazeError('Incorrect input.')         for i in line:          if i not in allowed_digits:            raise MazeError('Incorrect input.')         maze_list.append(line)     if len(maze_list)<2 or len(maze_list)>31:       raise MazeError('Incorrect input.')     a=len(maze_list[0])     for i in maze_list:       if len(i)!=a or len(i)>41 or len(i)<2:         raise MazeError('Incorrect input.')     allowed_column = (2,0)     allowed_row = (1,0)     for i in maze_list:       if i[len(i)-1] not in allowed_column:         raise MazeError('Input does not represent a maze.')     for i in maze_list[len(maze_list)-1]:       if i not in allowed_row:         raise MazeError('Input does not represent a maze.')     self.maze_list = maze_list     self.y_dim_of_maze = len(maze_list[0])     self.x_dim_of_maze = len(maze_list)     def draw(maze_array, wall_graph):   m = len(maze_array)  # m is number of y coordinates   n = len(maze_array[0])  # n is number of x coordinates   maze_file_path = sys.argv[1]   tex_file_path = os.path.splitext(maze_file_path)[0] + ".tex"   print(tex_file_path)   with open(tex_file_path, "w", encoding='utf-8') as tex:     tex.write(r"""\documentclass[10pt]{article} \usepackage{tikz} \usetikzlibrary{shapes.misc} \usepackage[margin=0cm]{geometry} \pagestyle{empty} \tikzstyle{every node}=[cross out, draw, red] \begin{document} \vspace*{\fill} \begin{center} \begin{tikzpicture}[x=0.5cm, y=-0.5cm, ultra thick, blue] % Walls """)     for y in range(m):       for x in range(n):         for node_connection in wall_graph[x][y]:           tex.write(f"  \draw ({x},{y}) -- ({node_connection[0]},{node_connection[1]}); ")     tex.write(r"""% Pillars """)     for y in range(m):       for x in range(n):         if len(wall_graph[x][y]) == 0:           tex.write(f"  \\fill[green] ({x},{y}) circle(0.2); ")     tex.write(r"""\end{tikzpicture} \end{center} \vspace*{\fill} \end{document} """) def get_maze_array(self):   maze_array = [] # 2d list   with open(sys.argv[1], 'r') as maze_txt:     for line in maze_txt.readlines():       sanitized_line: str = "".join(line.split()) # should look like"10221230"       if not sanitized_line: # if line is empty         continue       numbers: list[str] = list(sanitized_line) # ["1", 0, 2, 2, 1, 2, 3, 0]       maze_array.append(numbers)     return maze_array # maze_array has been populated as a 2d list of numbers ranging from 0 to 3               def transform_maze_array_into_wall_graph(self,maze_array):   m = len(maze_array)  # m is number of y coordinates   n = len(maze_array[0])  # n is number of x coordinates   # initialize wall graph wall_graph[x][y] = [(Tuple)]   wall_graph = []   for x in range(n):     new = []     for y in range(m):       new.append([])     wall_graph.append(new)   # populate wall graph   for y in range(m):     for x in range(n):       value = maze_array[y][x]       if value == "0":         continue       if value == "1":         wall_graph[x][y].append((x+1, y))         wall_graph[x+1][y].append((x, y))       if value == "2":         wall_graph[x][y].append((x, y+1))         wall_graph[x][y+1].append((x, y))       if value == "3":         wall_graph[x][y].append((x+1, y))         wall_graph[x][y+1].append((x, y))         wall_graph[x][y].append((x, y+1))         wall_graph[x+1][y].append((x, y))   return wall_graph def main():   maze_array = get_maze_array()   validate_maze(maze_array)   wall_graph = transform_maze_array_into_wall_graph(maze_array) #  maze_graph = transform_wall_graph_into_maze_graph(wall_graph) #  search(maze_graph) # find cul de sac, find distinct accessible regions, find inaccessible regions, find the best path   draw(maze_array, wall_graph) if __name__ == "__main__":   main()