/usr/lib64/python3.6/site-packages/matplotlib/font_manager.py:1331: UserWarning: findfont: Font family ['Arial'] not found. Falling back to DejaVu Sans
  (prop.get_family(), self.defaultFamily[fontext]))
Traceback (most recent call last):
  File "assignment2.py", line 136, in <module>
    trans= nx.transitivity(G)*100
  File "/usr/lib64/python3.6/site-packages/networkx/algorithms/cluster.py", line 400, in transitivity
    triangles = sum(t for v, d, t, _ in _triangles_and_degree_iter(G))
  File "/usr/lib64/python3.6/site-packages/networkx/algorithms/cluster.py", line 400, in <genexpr>
    triangles = sum(t for v, d, t, _ in _triangles_and_degree_iter(G))
  File "/usr/lib64/python3.6/site-packages/networkx/algorithms/cluster.py", line 87, in _triangles_and_degree_iter
    gen_degree = Counter(len(vs & (set(G[w]) - {w})) for w in vs)
  File "/usr/lib64/python3.6/collections/__init__.py", line 535, in __init__
    self.update(*args, **kwds)
  File "/usr/lib64/python3.6/collections/__init__.py", line 622, in update
    _count_elements(self, iterable)
  File "/usr/lib64/python3.6/site-packages/networkx/algorithms/cluster.py", line 87, in <genexpr>
    gen_degree = Counter(len(vs & (set(G[w]) - {w})) for w in vs)
  File "/usr/lib64/python3.6/site-packages/networkx/classes/graph.py", line 458, in __getitem__
    return self.adj[n]
  File "/usr/lib64/python3.6/site-packages/networkx/classes/graph.py", line 336, in adj
    @property
KeyboardInterrupt