---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-10-d9a7cd309bb5> in <module>
      1 # Generate square grid graph with auxiliary nodes for spanning cluster detection
----> 2 grid = percolate.spanning_2d_grid(3)

~\anaconda3\lib\site-packages\percolate\percolate.py in spanning_2d_grid(length)
    956     for i in range(length):
    957         # side 0
--> 958         ret.node[(0, i)]['span'] = 0
    959         ret[(0, i)][(1, i)]['span'] = 0
    960 

AttributeError: 'Graph' object has no attribute 'node'