old_contents: #!/usr/bin/python2.7
  
  # The first code in this course
  # It must be the "Hello World"
  
  print 'Hello World'
  
new_contents: #!/usr/bin/python2.7
  
  # 
  # helloworld.py v1.0 by mariuszha
  # 
  # The first code in this course
  # It must be the "Hello World"
  #
  
  print 'Hello World'
  
subject: Update HelloWorld.py