from random import choice
class 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])
x_step = x_direction*x_distance
y_direction = choice([1,-1])
y_distance = choice([0,1,2,3,4])
y_step = y_direction*y_distance
if x_step == 0 and y_step == 0:
continue
next_x = self.x_values[-1]+x_step
next_y = self.y_values[-1]+y_step
self.x_values.append(next_x)
self.y_values.append(next_y)
rw_visual.py
import matplotlib.pyplot as plt
from random_walk import RandomWalk
rw = RandomWalk()
rw.fill_walk()
plt.scatter(rw.x_values,rw.y_values,s=5)
plt.show()
c错误提示
Traceback (most recent call last):
File "rw_visual.py", line 2, in <module>
from random_walk import RandomWalk
File "D:\python_work\cretive.py\random_walk.py", line 24, in <module>
rw.fill_walk()
File "D:\python_work\cretive.py\random_walk.py", line 8, in fill_walk
while len(self.x_values) < len(self.num_points):
AttributeError: 'RandomWalk' object has no attribute 'x_values'
