Traceback (most recent call last):
  File "D:/Dropbox/dynamics/main.py", line 16, in <module>
    A = create_adj(edges)
  File "D:\Dropbox\dynamics\powermethod.py", line 77, in create_adj
    print("Error: n:", n, "m:", m)
UnboundLocalError: local variable 'n' referenced before assignment