绘制简单的条形图(使用pygal掷筛子)

#encoding:utf-8import pygalfrom random import randintclass Die():    '''表示一个筛子的类'''    def __init__(self, num_size = 6):        '''筛子默认为6面'''        self.num_size = num_size    def roll(self):        '''返回一个位于1和筛子面数之间的随机值'''        return randint(1, self.num_size)die = Die()#掷几次筛子，并将结果存储到一个列表中results = []for roll_num in range(1000):    result = die.roll()    results.append(result)'''#输出掷筛子的结果a = 0for i in results:    print("%d"%(i), end = ' ')    #print(i, end =' ')    a = a + 1    if a % 10 ==0:        print()'''#分析各个面出现的次数frequencies = []for value in range(1, die.num_size + 1):    frequency = results.count(value)    frequencies.append(frequency)#对结果进行可视化hist = pygal.Bar()hist.title = "Result 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('使用pygal模拟掷筛子.svg')