python中pygal

用python3.9运行书上掷骰子可视化的例子时报错。

import pygal
from die import Die

die_1=Die()
die_2=Die()

results=[]
for roll_num in range(1000):
    result=die_1.roll()+die_2.roll()
    results.append(result)

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)

hist=pygal.Bar()

hist.title="Results of rolling one D6 dice 1000 times."
hist.x_labels=['2','3','4','5','6','7','8','9','10','11','12']
hist.x_title="Result"
hist.y_title="Frequency of Result"

hist.add('D6+D6',frequencies)
hist.render_to_file('die_visual.svg')
 

报错结果如下面的图所示

我在命令窗输入pip install pygal能下载成功但运行报错，在命令窗输入python -m pip install --user pygal就下载不了pygal

有人能帮忙解决解决嘛

卸载python重装试试

没有模块die