محاور ثنائية في Matplotlib

# Filename : example.py
# Copyright : 2020 By w3codebox
# Author by : ar.oldtoolbag.com
# Date : 2020-08-08
#! /usr/bin/env python
　#coding=utf-8
　import matplotlib.pyplot as plt
　import numpy as np
　import math
　plt.rcParams['font.sans-serif'] = ['SimHei'] # 步骤一(替换sans-serif字体)
　plt.rcParams['axes.unicode_minus'] = False # 原文出自【立地货】，商业转载请联系作者获得授权，非商业请保留原文链接：
　fig = plt.figure()
　a1 = fig.add_axes([0,0,1,1])
　x = np.arange(1,11)
　a1.plot(x, np.exp(x))
　a1.set_ylabel('exp')
　a2 = a1.twinx()
　a2.plot(x, np.log(x),'ro-')
　a2.set_ylabel('log')
　fig.legend(labels=('exp','log'),loc='upper left')
　plt.show()