from mpl_toolkits.axes_grid.parasite_axes import SubplotHost import matplotlib.pyplot as plt fig = plt.figure(1) host = SubplotHost(fig, 111) fig.add_subplot(host) par = host.twinx() host.set_xlabel("Distance") host.set_ylabel("Density") par.set_ylabel("Temperature") p1, = host.plot([0, 1, 2], [0, 1, 2], label="Density") p2, = par.plot([0, 1, 2], [0, 3, 2], label="Temperature") host.axis["left"].label.set_color(p1.get_color()) par.axis["right"].label.set_color(p2.get_color()) host.legend() plt.show()