importmatplotlib.pyplotaspltimportnumpyasnpfig=plt.figure()ax=fig.add_subplot(projection="polar",facecolor="lightgoldenrodyellow")r=np.linspace(0,3,301)theta=2*np.pi*rax.plot(theta,r,color="tab:orange",lw=3,label="a line")ax.plot(0.5*theta,r,color="tab:blue",ls="--",lw=3,label="another line")ax.tick_params(grid_color="palegoldenrod")# For polar Axes, it may be useful to move the legend slightly away from the# Axes center, to avoid overlap between the legend and the Axes.  The following# snippet places the legend's lower left corner just outside the polar Axes# at an angle of 67.5 degrees in polar coordinates.angle=np.deg2rad(67.5)ax.legend(loc="lower left",bbox_to_anchor=(.5+np.cos(angle)/2,.5+np.sin(angle)/2))plt.show()

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