>>> """
==================
Figure legend demo
==================

Instead of plotting a legend on each axis, a legend for all the artists on all
the sub-axes of a figure can be plotted instead.
"""
... 
... import numpy as np
... import matplotlib.pyplot as plt
... 
... fig, axs = plt.subplots(1, 2)
... 
... x = np.arange(0.0, 2.0, 0.02)
... y1 = np.sin(2 * np.pi * x)
... y2 = np.exp(-x)
... l1, = axs[0].plot(x, y1)
... l2, = axs[0].plot(x, y2, marker='o')
... 
... y3 = np.sin(4 * np.pi * x)
... y4 = np.exp(-2 * x)
... l3, = axs[1].plot(x, y3, color='tab:green')
... l4, = axs[1].plot(x, y4, color='tab:red', marker='^')
... 
... fig.legend((l1, l2), ('Line 1', 'Line 2'), 'upper left')
... fig.legend((l3, l4), ('Line 3', 'Line 4'), 'upper right')
... 
... plt.tight_layout()
... plt.show()
...