      def disable(self):
          self.catch_warnings.__exit__(*sys.exc_info())
  
  
  @contextmanager
  def patch_logger(logger_name, log_level, log_kwargs=False):
      """
      Context manager that takes a named logger and the logging level
      and provides a simple mock-like list of messages received.
  
      Use unittest.assertLogs() if you only need Python 3 support. This
      private API will be removed after Python 2 EOL in 2020 (#27753).
      """
      calls = []
  
      def replacement(msg, *args, **kwargs):
          call = msg % args
          calls.append((call, kwargs) if log_kwargs else call)
      logger = logging.getLogger(logger_name)
      orig = getattr(logger, log_level)
      setattr(logger, log_level, replacement)
      try:
          yield calls
      finally:
          setattr(logger, log_level, orig)
  
  
  # On OSes that don't provide tzset (Windows), we can't set the timezone
  # in which the program runs. As a consequence, we must skip tests that
  # don't enforce a specific timezone (with timezone.override or equivalent),
  # or attempt to interpret naive datetimes in the default timezone.
  
 
</s> remove def str_prefix(s):
    return s % {'_': ''}


 </s> add 
      def disable(self):
          self.catch_warnings.__exit__(*sys.exc_info())
  
  























  # On OSes that don't provide tzset (Windows), we can't set the timezone
  # in which the program runs. As a consequence, we must skip tests that
  # don't enforce a specific timezone (with timezone.override or equivalent),
  # or attempt to interpret naive datetimes in the default timezone.
  
keep keep keep keep replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace replace keep keep keep keep keep
 Refs #27753 -- Removed django.test.utils.patch_logger() and str_prefix(). 
django/test/utils.py