from random import choiceclass randomwalk():  def __init__(self,num_points=5000):    self.num_points=num_points    self.x_values=[0]    self.y_values=[0]  def fill_walk(self):    while len(self.x_values)<self.num_points:      x_direction=choice([1,-1])      x_distance=choice([0,1,2,3,4,5])      x_step=x_direction*x_distance      y_direction=choice([1,-1])      y_distance=choice([0,1,2,3,4,5])      y_step=y_direction*y_distance      if x_step==0 and y_step==0:        continue      self.x_values.append(self.x_values[-1]+x_step)      self.y_values.append(self.y_values[-1]+y_step)

import matplotlib.pyplot as pltfrom random_walk import randomwalkwhile True:  rw=randomwalk()  rw.fill_walk()  plt.figure(figsize=(15,8))  point_numbers=list(range(rw.num_points))  plt.scatter(rw.x_values,rw.y_values,s=1,c=point_numbers,  edgecolor='none',cmap=plt.cm.Blues)  plt.scatter(rw.x_values[0],rw.y_values[0],s=50,edgecolor='none',  c='green')  plt.scatter(rw.x_values[-1],rw.y_values[-1],s=50,edgecolor='none',  c='green')  plt.show()  a=input("do you want to walk again?(y/n)")  if a=='n':    break