python如何根据x轴、y轴坐标在坐标轴里画出曲线图

import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt
a=[1,2,3,5,6,10]
b=[0,3,4,5,7,8]
c=[10,9,8,7,6,5,2,0]
d=[1,2,3,5,5,6,4,0]
plt.title('Title')
plt.plot(a, b, color='blue', label='test1')
plt.plot(c, d, color='green', label='test2')
plt.legend()  # 显示图例
plt.xlabel(X')
plt.ylabel('Y')
plt.savefig("test.jpg")

# -*- coding: utf-8 -*-
"""
Created on Thu Apr 23 19:19:49 2020
@author: del
"""
import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt
plt.style.use('classic');
myfont=mpl.font_manager.FontProperties(fname='simhei.ttf');#从电脑的字体文件夹复制这个字体到当前文件夹
y1=[10,9,8,7,6,5,4,4,4,4,4,4];
y2=[9,8,7,6,5,4,3,3,3,3,3,3];
x=[1,10,20,30,40,50,60,70,80,90,100,110];
plt.plot(x,y1,color='steelblue',marker='o',mec='steelblue',mfc='steelblue');
plt.plot(x,y2,color='coral',marker='*',mec='coral',mfc='coral', ms=10); 
#对xy轴设置
#坐标轴字体大小
plt.xticks([1,10,20,30,40,50,60,70,80,90,100,110],fontsize=12);
plt.yticks([t for t in range(0,13,2) ],fontsize=12);
legends={'棒棒的我','胖胖的我'};
font = {'family':'simhei',#这里必须要有第5行的操作前提
         'weight': 'normal',
         'size': 15,
         }
plt.legend(legends,loc=0,prop=font,labelspacing=1,frameon=True);
#这样就可以设置字体大小
#你问我legend为啥不直接写fontsize?答：试过无效
plt.xlabel('这是x',fontproperties=myfont,fontsize=15);
plt.ylabel('这是y',fontproperties=myfont,fontsize=15);
#plt.plot(x,y1,'-k');
#plt.plot(x,y2,':k'); 
#plt.savefig('1.png',dpi = 400) #保存图像，dpi可以调整图像的像素大小