code: def get_item(dictionary, tuple_key, default_value):
      
      u, v = tuple_key
  
      # Grab tuple-values from dictionary
      tuple1 = dictionary.get((u, v), None)
      tuple2 = dictionary.get((v, u), None)
  
      # Return the first value that is not {None, 0, False}
      return tuple1 or tuple2 or default_value
docs: Grab values from a dictionary using an unordered tuple as a key.
  
      Dictionary should not contain None, 0, or False as dictionary values.
  
      Args:
          dictionary: Dictionary that uses two-element tuple as keys
          tuple_key: Unordered tuple of two elements
          default_value: Value that is returned when the tuple_key is not found in the dictionary