各位帮帮我，在到底有没有die这个模块，掷色子显示not moudle named die

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/449490161466170.png "#left

错的地方还不少，抄都抄错了

import random

import pygal as pygal


class Die:
    def __init__(self, num_sides=6):
        self.num_sides = num_sides

    def roll(self):
        return random.randint(1, self.num_sides)


die = Die()
results = []
for roll_num in range(100):
    result = die.roll()
    results.append(result)
print(results)
frequencies = []
for value in range(1, die.num_sides+1):
    frequency = results.count(value)
    frequencies.append(frequency)

hist = pygal.Bar()
hist.title = 'results of rolling onr D6 100 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')