matplotlib 设置标题 xy标题等

import matplotlib.pyplot as plt
import matplotlib as mpl

baseclass=[1,2,3,4]
name = ['class1','class2','class3','class4']
scores = [67,79,89,50]
plt.title("title") # 图形标题
plt.xlabel("x labal") # x轴名称
plt.ylabel("y label") # y 轴名称
plt.xticks(baseclass,name) # x轴替换为名字
plt.bar(baseclass,scores)

#设置每个轴的值
for i in range(0,len(baseclass)):
    print(i)
    plt.text(baseclass[i],scores[i]+1,scores[i])
plt.show()

结果如下