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- 2018-3-9
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这是抄的原代码:
random_walk.py
from random import choice
class RandomWalk():
"""一个生产随机漫步数据的类"""
def __int__(self, num_points = 5000):
"""初始化随机漫步的属性"""
self.num_points = num_points
# 所有随机漫步都始于(0,0)
self.x_values = [0]
self.y_values = [0]
def fill_walk(self):
"""计算随机漫步包含的所有点"""
#不断漫步,直到列表达到指定的长度
while len(self.x_values) < self.num_points:
#决定前进方向以及沿这个方向前进的距离
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
#拒绝原地踏步
if x_step == 0 and y_step == 0:
continue
#计算下一个点的x和y值
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
# 创建一个RandomWalk实例,并将其包含的点都绘制出来
rw = RandomWalk()
rw.fill_walk()
plt.scatter(rw.x_values, rw.y_values, s = 15)
plt.show()
运行rw_visual.py的运行结果为:
C:\Users\qlh\AppData\Local\Programs\Python\Python35\python.exe E:/MATPLOTLIB/rw_visual.py
Traceback (most recent call last):
File "E:/MATPLOTLIB/rw_visual.py", line 7, in <module>
rw.fill_walk()
File "E:\MATPLOTLIB\random_walk.py", line 18, in fill_walk
while len(self.x_values) < self.num_points:
AttributeError: 'RandomWalk' object has no attribute 'x_values'
进程已结束,退出代码1
百度查询一问题结果为工程项目内的文件名冲突,经检查无冲突,求大神解答
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