matplotlib_3

创建一个生成骰子的程序并生成直方图

die_visual.py

import pygal

from die import Die

# 创建一个D6
die = Die()

#掷几次骰子，并将结果存储在一个列表中
results = []
for roll_num in range(1000):
    result = die.roll()
    results.append(result)

frequencies = []
for value in range(1,die.num_sides+1):
    frequency = results.count(value)
    frequencies.append(frequency)

"""print(results)
print(len(results))
print(frequencies)
print(len(frequencies))"""

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('div_visual.svg')

die.py

from random import randint

class Die():
    """表示一个骰子的类"""
    def __init__(self, num_sides = 6):
        """骰子默认为6面"""
        self.num_sides = num_sides

    def roll(self):
        """返回一个位于1和骰子面数之间的随机值"""
        return randint(1, self.num_sides)