Plot a three-dimensional cubic wireframe

ax_wireframe.py

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
from mpl_toolkits.mplot3d.art3d import Poly3DCollection, Line3DCollection

def wireframe(ax):
    Z = 1.05 * np.array([[-1,+1,-1], [+1,+1,-1], 
                         [+1,-1,-1], [-1,-1,-1], 
                         [-1,+1,+1], [+1,+1,+1], 
                         [+1,-1,+1], [-1,-1,+1]])
    verts = [[Z[0],Z[1],Z[2],Z[3]],
             [Z[4],Z[5],Z[6],Z[7]],
             [Z[0],Z[1],Z[5],Z[4]],
             [Z[2],Z[3],Z[7],Z[6]], 
             [Z[1],Z[2],Z[6],Z[5]],
             [Z[4],Z[7],Z[3],Z[0]]] # return verts
    ax.add_collection3d(Poly3DCollection(verts, 
                                         facecolors=(0,0,0,0),
                                         linewidths=1, 
                                         edgecolors='blueviolet'))
                                    
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
wireframe(ax)
plt.show()