old_contents: import random
  
  
  RANGE = (-0.01, 0.01)
  
  class AlternativeFloat(float):
      def __init__(self, number):
          self.number = number
  
      def __new__(self, number):
          return super(AlternativeFloat, self).__new__(self, number)
  
      def __add__(self, other):
          plus = random.uniform(*RANGE)
  
          if self.__class__ == other.__class__:
              return AlternativeFloat(self.number + float(other.number) + plus)
          else:
              return AlternativeFloat(self.number) + AlternativeFloat(other + plus)
  
  
new_contents: import random
  
  
  RANGE = (-0.01, 0.01)
  
  
  class AlternativeFloat(float):
      def __init__(self, number):
          self.number = number
  
      def __new__(self, number):
          return super(AlternativeFloat, self).__new__(self, number)
  
      def __add__(self, other):
          plus = random.uniform(*RANGE)
  
          if self.__class__ == other.__class__:
              return AlternativeFloat(self.number + float(other.number) + plus)
          else:
              return AlternativeFloat(self.number) + AlternativeFloat(other + plus)
  
subject: Correct newlining