old_contents: from django.test.runner import DiscoverRunner
  from teamcity.unittestpy import TeamcityTestRunner
  
  
  class TeamcityDjangoRunner(DiscoverRunner):
      def run_suite(self, suite, **kwargs):
          return TeamcityTestRunner().run(suite)
new_contents: from __future__ import absolute_import
  from django.test.runner import DiscoverRunner
  from teamcity.unittestpy import TeamcityTestRunner
  
  
  class TeamcityDjangoRunner(DiscoverRunner):
      def run_suite(self, suite, **kwargs):
          return TeamcityTestRunner().run(suite)
subject: Use absolute import for 'django'