pygal 简易绘制柱状图

1 from random import randint
2 
3 
4 class Die:
5     def __init__(self, num_sides=6):
6         self.num_sides = num_sides
7 
8     def roll(self):
9         return randint(1, self.num_sides)

 1 import pygal
 2 from die import Die
 3 
 4 die1 = Die()
 5 die2 = Die(10)
 6 
 7 
 8 results = []
 9 for roll_num in range(1000):
10     results.append(die1.roll() + die2.roll())
11 
12 frequencies = []
13 
14 for value in range(2, die1.num_sides + die2.num_sides + 1):
15     frequency = results.count(value)
16     frequencies.append(frequency)
17 
18 hist = pygal.Bar()
19 
20 hist.title = ‘Result of rolling one D6 1000 times‘
21 hist.x_title = ‘Result‘
22 hist.x_labels = []
23 for value in range(2, die1.num_sides + die2.num_sides + 1):
24     hist.x_labels.append(value)
25 hist.y_title = ‘Frequencies of Result‘
26 hist.add(‘D6‘, frequencies)
27 
28 hist.render_to_file(‘die_visual.svg‘)