old_contents: from defines import *
  
  import random
  
  import pdb
  
  class VisionFilter():
      def __init__(self, wrapped_filter):
          self.wrapped_filter = wrapped_filter
          self.vision = 0
  
      def __getattr__(self, field_name):
          return getattr(self.wrapped_filter, field_name)
  
      def set_vision(self, vision):
          self.vision = vision
  
      def copy(self, *args, **kwargs):
          new_inner = self.wrapped_filter.copy(*args, **kwargs)
          new_bf = VisionFilter(new_inner)
          new_bf.vision = self.vision
          return new_bf
  
      def get_iter(self, *args, **kwargs):
          passed = 0
          for m in self.wrapped_filter.get_iter(*args, **kwargs):
              rand_val = random.random()
              if rand_val < self.vision:
                  yield m
                  passed += 1
  
          if passed == 0:
              st()
              i = self.wrapped_filter.get_iter(*args, **kwargs)
              yield m
  
new_contents: from defines import *
  
  import random
  
  import pdb
  
  class VisionFilter():
      def __init__(self, wrapped_filter):
          self.wrapped_filter = wrapped_filter
          self.vision = 0
  
      def __getattr__(self, field_name):
          return getattr(self.wrapped_filter, field_name)
  
      def set_vision(self, vision):
          self.vision = vision
  
      def copy(self, *args, **kwargs):
          new_inner = self.wrapped_filter.copy(*args, **kwargs)
          new_bf = VisionFilter(new_inner)
          new_bf.vision = self.vision
          return new_bf
  
      def get_iter(self, *args, **kwargs):
          passed = 0
          for m in self.wrapped_filter.get_iter(*args, **kwargs):
              rand_val = random.random()
              if rand_val < self.vision:
                  yield m
                  passed += 1
  
          if passed == 0:
              i = self.wrapped_filter.get_iter(*args, **kwargs)
              yield m
  
subject: Remove breakpoint