matplotlib柱状图形上添加文本

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x = [1,2,3] y1 = np.array([4,5,6]) y2 = np.array([5,6,7]) y3 = np.array([7,6,5]) width = 0.2 Sum = y1+y2+y3 per = 100*y2/Sum   #添加在中间，旋转90度 def add_mid(x,y,text):     for x0,y0,text0 in zip(x,y,text):         ax.text(x0,y0-y0/2,text0,rotation = 90) #添加文本在图形顶部 def add_top(x,y,text):     for x0,y0,text0 in zip(x,y,text):         ax.text(x0,y0,text0) #添加百分比 def add_per(x,y,text):     for x0,y0,text0 in zip(x,y,text):         ax.text(x0+width/2,y0,str(round(text0,2))+'%')   fig,ax =plt.subplots() ax.bar(x,y1,width) ax.bar(x,y2,width,bottom = y1) ax.bar(x,y3,width,bottom = y1+y2) #（x坐标，y坐标,文本） add_mid(x,y1,y1) add_top(x,Sum,Sum) add_per(x,y1+y2/2,per) plt.show()