code: def init():
      ax.scatter(*nodes.T, alpha=0.2, s=100, color="blue")
      for vizedge in edges:
          ax.plot(*vizedge.T, color="gray")
      ax.grid(False)
      ax.set_axis_off()
      plt.tight_layout()
      return
  
file_path: networkx/examples/3d_drawing/plot_3d_rotation_animation.py
imports: import numpy
  import networkx
  import random
  import matplotlib.pyplot
  from matplotlib import animation
label_desc: Use image node_id 1 for calling a global function with example usage: init() without return types