from matplotlib import pyplot as plt
import matplotlib
matplotlib.rcParams['font.sans-serif'] = ['SimHei']    #显示中文
plt.bar(range(5),[100,200,300,400,500],color="red") 
plt.xticks(range(5),['A','B','C','D','E']) 
plt.xlabel('姓名') 
plt.ylabel('得分') 
plt.title('学生分数') 
plt.show()

plt.plot([100,200,300,400,500],color='green')  #画线

plt.savefig('a.jpg')  #保存图片

 

饼图

labels = ['A','B','C','D']
plt.pie([50,30,50,20],labels=labels,autopct='%1.1f%%')
plt.title('人口比例') 

autopct='%1.1f%%'   显示百分比

直方图

heights = [180,160,177,177]
plt.hist(heights,color="green",alpha=0.5)
plt.xlabel('身高')
plt.ylabel('人数')
plt.title('身高统计')

alpha=0.5  透明度

散点图

import numpy as np
np.random.seed(10) #随机种子  吧你的随机数给固定住
heights=[]
weights=[]
heights.append(np.random.randint(50,100,size=50))
weights.append(np.random.randint(50,100,size=50))
plt.scatter(heights,weights,marker='*',color='green')

marker='*'改变形状

折线图

x = [2,16,84,5,2]
y = [3,12,5,6,7]
plt.plot(x,y)