代码2

import random
import matplotlib.pyplot as plt
class random_walks:
    def __init__(self,n=100,step_length=0.1):
        self.x=[0]
        self.y=[0]
        self.x2=[0]
        self.n=n
        self.l=step_length
    def walk(self):
        for i in range(1,self.n):
            self.x.append(i)
            temp=random.random()
            if temp < 0.5:
                self.y.append(self.y[-1]+self.l)
            elif temp > 0.5:
                self.y.append(self.y[-1]-self.l)
    def show(self):
        plt.plot(self.x,self.y,'o')
        plt.title('random walk in one dimension')
        plt.xlabel('step number')
        plt.ylabel('x')
        plt.grid(True)
  
a=random_walks()
a.walk()
a.show()
b=random_walks()
b.walk()
b.show()