#coding=utf-8

from random import randint

class Die():

    """骰子类"""

    def __init__(self, num_sides = 6):

        """默认6面"""

        self.num_sides = num_sides

    def roll(self):

        """返回一个介于1到骰子面数之间得随机值"""

        return randint(1, self.num_sides)

#coding=utf-8

import pygal

from die import Die

# 创建两个6面骰子

die_1 = Die()

die_2 = Die()

# 掷骰子多次，并将结果存入列表

results = []

for roll_num in range(1000):

    result = die_1.roll() + die_2.roll()

    results.append(result)

# 分析结果

frequencies = []

max_result = die_1.num_sides + die_2.num_sides

for value in range(2, max_result+1):

    frequency = results.count(value)

    frequencies.append(frequency)

# 可视化

hist = pygal.Bar()

hist.title = "Results of two D6 1000 times."

hist.x_labels = ['', '', '', '', '', '', '', '', '', '', '']

hist.x_title = "Result"

hist.y_title = "frequency of Result"

hist.add('D6 + D6', frequencies)

hist.render_to_file('dice_visual.svg')