使用Python进行数据可视化（二、Pygal）

#模拟骰子
from random import randint
 
class Die():
        """表示一个骰子"""
        
        def __init__(self, num_sides=6):
                """骰子默认为6面"""
                self.num_sides = num_sides
                
        def roll(self):
                """返回一个一个1到骰子面数的随机值"""
                return randint(1, self.num_sides)

from die import Die
import pygal
#创建一个D6
die = Die()
 
#创建列表储存投骰子的结果
results =[]
for roll_num in range(1000):
        result = die.roll()
        results.append(result)
 
#分析结果，用列表来储存各面出现的次数
frequencies = []
for value in range(1,die.num_sides+1):
        frequency = results.count(value)
        frequencies.append(frequency)
 
#对结果进行可视化
hist = pygal.Bar()
 
hist.title ="Results if rollling one D6 1000 times"
hist.x_labels = ['1', '2' ,'3', '4', '5' ,' 6']
hist.x_title = "Result"
hist.y_title = "Frequency of Result"
 
hist.add('D6', frequencies)
hist.render_to_file('die_visual.svg')
 
 
 

die_visual.svg