Traceback (most recent call last):
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/main.py", line 26, in <module>
    [w.step(vb_group0, steps_per_walker) for w in walkers_g0]
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/main.py", line 26, in <listcomp>
    [w.step(vb_group0, steps_per_walker) for w in walkers_g0]
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/walker.py", line 42, in step
    self.perturbation()
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/walker.py", line 73, in perturbation
    B.connect(A, self.virtual_board)
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 78, in connect
    if not old_parent or (self.dist_from_pin(pin, board) > other.dist_from_pin(pin, board) + other.dist(self.pos)):
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 133, in dist_from_pin
    return 1 + parent.dist_from_pin(pin, board)
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 133, in dist_from_pin
    return 1 + parent.dist_from_pin(pin, board)
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 133, in dist_from_pin
    return 1 + parent.dist_from_pin(pin, board)
  [Previous line repeated 988 more times]
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 130, in dist_from_pin
    parent = self.parent_as_pixel(pin, board)
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 177, in parent_as_pixel
    parent = self.parent(pin)
  File "/Users/dyllan/Desktop/Vathys/gdspy_ml/gdspy_solver/serialized_v2/pixel.py", line 184, in parent
    return self.parents.get(pin, -1)
RecursionError: maximum recursion depth exceeded while calling a Python object