python数据分析与机器学习实战-10.子图

import pandas as pd
import matplotlib.pyplot as plt
fig = plt.figure()
ax1 = fig.add_subplot(2,2,1)
ax2 = fig.add_subplot(2,2,2)
ax3 = fig.add_subplot(2,2,4)
plt.show()

import numpy as np
fig = plt.figure(figsize=(10,10))
ax1 = fig.add_subplot(2,2,1)
ax2 = fig.add_subplot(2,2,2)
fig.show()
/anaconda3/lib/python3.6/site-packages/matplotlib/figure.py:459: UserWarning: matplotlib is currently using a non-GUI backend, so cannot show the figure
  "matplotlib is currently using a non-GUI backend, "

# matplotlib