old_contents: from robot.api import logger
  
  import os
  import signal
  import subprocess
  
  ROBOT_LIBRARY_DOC_FORMAT = 'reST'
  
  
  class DjangoLibrary:
      """A library for testing Django with Robot Framework.
      """
  
      django_pid = None
      selenium_pid = None
  
      # TEST CASE => New instance is created for every test case.
      # TEST SUITE => New instance is created for every test suite.
      # GLOBAL => Only one instance is created during the whole test execution.
      ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
  
      def __init__(self, host="127.0.0.1", port=8000):
          self.host = host
          self.port = port
  
      def start_django(self):
          args = [
              'python',
              'mysite/manage.py',
              'runserver',
              '%s:%s' % (self.host, self.port),
              '--nothreading',
              '--noreload',
          ]
          self.django_pid = subprocess.Popen(args).pid
          logger.console(
              "Django started (PID: %s)" % self.django_pid,
          )
  
      def stop_django(self):
          os.kill(self.django_pid, signal.SIGKILL)
          logger.console(
              "Django stopped (PID: %s)" % self.django_pid,
          )
  
new_contents: # -*- coding: utf-8 -*-
  __version__ = '0.1'
  
  from robot.api import logger
  
  import os
  import signal
  import subprocess
  
  ROBOT_LIBRARY_DOC_FORMAT = 'reST'
  
  
  class DjangoLibrary:
      """A library for testing Django with Robot Framework.
      """
  
      django_pid = None
      selenium_pid = None
  
      # TEST CASE => New instance is created for every test case.
      # TEST SUITE => New instance is created for every test suite.
      # GLOBAL => Only one instance is created during the whole test execution.
      ROBOT_LIBRARY_SCOPE = 'TEST SUITE'
  
      def __init__(self, host="127.0.0.1", port=8000):
          self.host = host
          self.port = port
  
      def start_django(self):
          """Start the Django server."""
          args = [
              'python',
              'mysite/manage.py',
              'runserver',
              '%s:%s' % (self.host, self.port),
              '--nothreading',
              '--noreload',
          ]
          self.django_pid = subprocess.Popen(args).pid
          logger.console(
              "Django started (PID: %s)" % self.django_pid,
          )
  
      def stop_django(self):
          """Stop Django server."""
          os.kill(self.django_pid, signal.SIGKILL)
          logger.console(
              "Django stopped (PID: %s)" % self.django_pid,
          )
  
subject: Add version, utf-8 and some comments.