old_contents: from __future__ import print_function
  
  import os
  import sys
  
  
  def one():
      for i in range(1):  # one
          two()
  
  
  def two():
      for i in range(1):  # two
          three()
  
  
  def three():
      for i in range(1):  # three
          four()
  
  
  def four():
      for i in range(1):  # four
          five()
  
  
  def five():
      in_five = 1
      for i in range(1):  # five
          return i
  
  
  if __name__ == "__main__":
      print('>>>>>>', os.environ.get('PYTHONHUNTER'))
      print('>>>>>>', sys.argv)
      one()
  
new_contents: from __future__ import print_function
  
  import os
  import sys
  
  
  def one():
      for i in range(1):  # one
          two()
  
  
  def two():
      for i in range(1):  # two
          three()
  
  
  def three():
      for i in range(1):  # three
          four()
  
  
  def four():
      for i in range(1):  # four
          five()
  
  
  def five():
      in_five = 1
      for i in range(1):  # five
          return i
  
  
  if __name__ == "__main__":
      one()
  
subject: Remove debug stuff.