code: def add(one, two=4, three=False):
      ''' This function adds two number.
  
      :param one: first number to add
      :param two: second number to add
      :rtype: int
      '''
      s = str(int(one) + int(two))
  
      logging.debug('logging sum from hello.py:' + s)
      print 'printing sum from hello.py:', s
  
      return f add(one, two=4, three=False):
      ''' This function adds two number.
  
      :param one: first number to add
      :param two: second number to add
      :rtype: int
      '''
      s = str(int(one) + int(two))
  
      logging.debug('logging sum from hello.py:' + s)
      print 'printing sum from hello.py:', s
  
      return s
docs: This function adds two number.
  
      :param one: first number to add
      :param two: second number to add
      :rtype: int