importmatplotlib.pyplotaspltimportnumpyasnpplt.style.use('_mpl-gallery')# Make data for a double helixn=50theta=np.linspace(0,2*np.pi,n)x1=np.cos(theta)y1=np.sin(theta)z1=np.linspace(0,1,n)x2=np.cos(theta+np.pi)y2=np.sin(theta+np.pi)z2=z1# Plotfig,ax=plt.subplots(subplot_kw={"projection":"3d"})ax.fill_between(x1,y1,z1,x2,y2,z2,alpha=0.5)ax.plot(x1,y1,z1,linewidth=2,color='C0')ax.plot(x2,y2,z2,linewidth=2,color='C0')ax.set(xticklabels=[],yticklabels=[],zticklabels=[])plt.show()

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