new_contents: import sys
  import math
  import pychecker.checker
  
  class Sample:
      """"""
   
      def __init__(self, num1, num2, num3):
  
          if "Windows" in platform.platform():
              print "You're using Windows!"
          if "Linux" in platform.platform():
              print "You're in Linux!"
   
          self.addition = self.addition(1, 2, 3)
   
      #----------------------------------------------------------------------
      def addition(this):
          """"""
          return 1+2+3
  
subject: Create buggy.py