用Pygal绘制直方图代码示例

from random import randint
class Die():
  '''扔骰子的类'''
  def __init__(self,num_sides=6):
    self.num_sides = num_sides # 骰子的面数
  def roll(self):
    return randint(1,self.num_sides)

from die import Die
import pygal
 
die = Die()
 
# 数据集合
results = []
count = 1
for roll_num in iter(lambda *args:die.roll(),None):
  results.append(roll_num)
  if count >= 1000:
    break
  count +=1
 
# 分析结果
frequencies= []
for value in range(1,die.num_sides+1):
  frequencie = results.count(value)
  frequencies.append(frequencie)
 
# 对结果进行可视化
hist = pygal.Bar()   # 生成实例
hist.title = 'Results of rolling one D6 1000 times' # 标题
hist.x_labels = ['1','2','3','4','5','6']      # X轴数值坐标
hist.x_title = 'Result'                 # X轴标题
hist.y_title = 'Frequency of Result'        # Y轴标题
 
hist.add('D6',frequencies)               # 传入Y轴数据
hist.render_to_file('die_visual.svg')        # 文件生成路径，必须为svg格式文件

from die import Die
import pygal
 
die1 = Die()
die2 = Die()
 
# 数据集合
results = []
for i in range(5000):
  result = die1.roll() + die2.roll()
  results.append(result)
# 分析结果
frequencies= []
for value in range(2,die1.num_sides+die2.num_sides+1):
  frequencie = results.count(value)
  frequencies.append(frequencie)
# 对结果进行可视化
hist = pygal.Bar()   # 生成实例
hist.title = 'Results of rolling one D6 5000 times' # 标题
hist.x_labels = ['2','3','4','5','6','7','8','9','10',11,12]      # X轴数值坐标
hist.x_title = 'Result'                 # X轴标题
hist.y_title = 'Frequency of Result'        # Y轴标题
 hist.add('D6+D6',frequencies)               # 传入Y轴数据
hist.render_to_file('die_visual.svg')        # 文件生成路径，必须为svg格式文件