Python学习笔记第17天

# 创建RandomWalk类
import matplotlib.pyplot as plt
from random import choice

class RandomWalk():
    """一个生成随机漫步数据的表"""
    
    def __init__(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着个方向前进的距离
            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)
            

# from random_walk import RandomWalk
rw=RandomWalk()
rw.fill_walk()
plt.scatter(rw.x_values,rw.y_values,s=15)
plt.show()

# 创建RandomWalk类
import matplotlib.pyplot as plt
from random import choice

class RandomWalk():
    """一个生成随机漫步数据的表"""
    
    def __init__(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着个方向前进的距离
            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)
            
while True:
    # from random_walk import RandomWalk
    # 创建一个RandomWalk实例，并将其包含的点都会指出来
    rw=RandomWalk()
    rw.fill_walk()
    plt.scatter(rw.x_values,rw.y_values,s=15)
    plt.show()

    keep_running = input("Make another walk? (y/n): ")
    if keep_running == ‘n‘:
        break

# 创建RandomWalk类
import matplotlib.pyplot as plt
from random import choice

class RandomWalk():
    """一个生成随机漫步数据的表"""
    
    def __init__(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着个方向前进的距离
            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)
            
while True:
    # from random_walk import RandomWalk
    # 创建一个RandomWalk实例，并将其包含的点都会指出来
    rw=RandomWalk()
    rw.fill_walk()
    plt.scatter(rw.x_values,rw.y_values,s=15)
    

    point_numbers = list(range(rw.num_points))
    plt.scatter(rw.x_values, rw.y_values, c=point_numbers, cmap=plt.cm.Blues,edgecolors=‘none‘, s=15)
    plt.show()
    
    keep_running = input("Make another walk? (y/n): ")
    if keep_running == ‘n‘:
        break

# 创建RandomWalk类
import matplotlib.pyplot as plt
from random import choice

class RandomWalk():
    """一个生成随机漫步数据的表"""
    
    def __init__(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着个方向前进的距离
            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)
            
while True:
    # from random_walk import RandomWalk
    # 创建一个RandomWalk实例，并将其包含的点都会指出来
    rw=RandomWalk()
    rw.fill_walk()
    plt.scatter(rw.x_values,rw.y_values,s=15)
    

    point_numbers = list(range(rw.num_points))
    plt.scatter(0,0,c=‘green‘,edgecolors=‘none‘,s=100)
    plt.scatter(rw.x_values[-1], rw.y_values[-1], c=‘red‘, edgecolors=‘none‘, s=100)
    plt.show()
    
    keep_running = input("Make another walk? (y/n): ")
    if keep_running == ‘n‘:
        break