数据可视化训练第四天（模拟投掷筛子并且统计频次）

投掷一个筛子

import matplotlib.pyplot as plt
from random import randint
import numpy as np

class Die:
    """模拟投掷筛子"""
    def __init__(self,num_sides=6):
        self.num_sides=num_sides
        
    def roll(self):
        return randint(1,self.num_sides)
    
    
    

num=100000#投掷1000次
num_sides=12
results=[]
die=Die(num_sides)#创建一个6面筛子

for value in range(num):
    results.append(die.roll())
    
frequencies=[]

for i in range(1,num_sides+1):
    frequencies.append(results.count(i))

    
fig,ax =plt.subplots()
x_values=list(range(1,num_sides+1))
p=ax.bar(x_values,frequenci