Python学习笔记（10）数据可视化-pygal

#encoding=gbk

from random import randint

class Die():
	"""表示一个骰子的类"""
	def __init__(self, num_sides=6):
		self.num_sides = num_sides
		
	def roll(self):
		#随机返回一个点数1,2,3,4,5,6
		return randint(1, self.num_sides)

#encoding=gbk

import pygal

from die import Die

die = Die()

results = []
for i in range(1000):  #0-999次
	result = die.roll()
	results.append(result)
	
#分析结果，骰子出现各点的次数
frequencies = []
for value in range(1, die.num_sides + 1):
	frequency = results.count(value)
	frequencies.append(frequency)
	
#print(frequencies)

#绘制直方图，对结果进行可视化
hist = pygal.Bar()
hist.title = 'Results of rolling 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('C:\\Users\\bingk\\Desktop\\python_dir\\picture\\die_visual.svg')  #扩展名必须为svg