text: from __future__ import print_function
  import sys
  
  
  def hello(what):
      print('Hello, {}!'.format(what))
  
  
  def say_what():
      return 'world'
  
  
  def main():
      hello(say_what())
      ptint("xd")
      ptint("xdd")
      ptint("2")
      return 0
  
  
  if __name__ == '__main__':
      sys.exit(main())
  