python画并列柱状图-Python实现绘制双柱状图并显示数值功能示例

本文实例讲述了Python实现绘制双柱状图并显示数值功能。分享给大家供大家参考,具体如下:

# -*- coding:utf-8 -*-

#! python3

import matplotlib.pyplot as plt

import mpl_toolkits.mplot3d

#定义函数来显示柱状上的数值

def autolabel(rects):

for rect in rects:

height = rect.get_height()

plt.text(rect.get_x()+rect.get_width()/2.-0.2, 1.03*height, '%s' % float(height))

if __name__ == '__main__':

l1=[68, 96, 85, 86, 76,87, 95]

l2=[85, 68, 79, 89, 94, 82,90]

name=['A','B','C','D','E','F','E']

total_width, n = 0.8, 2

width = total_width / n

x=[0,1,2,3,4,5,6]

plt.rc('font', family='SimHei', size=12)#设置中文显示,否则出现乱码!

a=plt.bar(x, l1, width=width, label='数学',fc = 'y')

for i in range(len(x)):

x[i] = x[i] + width

b=plt.bar(x, l2, width=width, label='语文',tick_label = name,fc = 'r')

autolabel(a)

autolabel(b)

plt.xlabel('学生')

plt.ylabel('成绩')

plt.title('学生成绩')

plt.legend()

plt.show()

运行结果:

希望本文所述对大家Python程序设计有所帮助。

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