old_contents: # coding=utf-8
  """
  Plugin loader, initially from Flask-Foundation.
  """
  from __future__ import absolute_import, division, print_function, \
      unicode_literals
  
  from importlib import import_module
  
  from straight.plugin.loaders import ModuleLoader
  from six.moves import filter
  
  
  class AppLoader(ModuleLoader):
  
      def __init__(self, subtype=None):
          self.subtype = None
          self._cache = []
          super(AppLoader, self).__init__()
  
      def _fill_cache(self, namespace):
          super(AppLoader, self)._fill_cache(namespace)
          self._cache = filter(self._meta, self._cache)
  
      def register(self, app, *args, **kwargs):
          """Load and register modules.
          """
          result = []
  
          submodule = kwargs.pop('submodule', None)
          logger = kwargs.pop('logger', None)
  
          for mod in self:
  
              if logger:
                  logger.info("Register module: %s" % mod.__name__)
  
              if submodule:
                  mod = self.import_module('%s.%s' % (mod.__name__, submodule))
  
              meta = self._meta(mod)
  
              if meta:
                  app.logger.info("Loading plugin {}.".format(mod))
                  meta(app, *args, **kwargs)
  
              result.append(mod)
  
          return result
  
      def __iter__(self):
          return iter(self._cache)
  
      def _meta(self, plugin):
          return getattr(plugin, 'register_plugin', None)
  
      @staticmethod
      def import_module(path):
          try:
              return import_module(path)
          except ImportError:
              return None
  
  
  # pymode:lint_ignore=F0401
  
new_contents: # coding=utf-8
  """
  Plugin loader, initially from Flask-Foundation.
  """
  from __future__ import absolute_import, division, print_function, \
      unicode_literals
  
  from importlib import import_module
  
  from six.moves import filter
  from straight.plugin.loaders import ModuleLoader
  
  
  class AppLoader(ModuleLoader):
  
      def __init__(self, subtype=None):
          self.subtype = None
          self._cache = []
          super(AppLoader, self).__init__()
  
      def _fill_cache(self, namespace):
          super(AppLoader, self)._fill_cache(namespace)
          self._cache = filter(self._meta, self._cache)
  
      def register(self, app, *args, **kwargs):
          """Load and register modules.
          """
          result = []
  
          submodule = kwargs.pop('submodule', None)
          logger = kwargs.pop('logger', None)
  
          for mod in self:
  
              if logger:
                  logger.info("Register module: %s" % mod.__name__)
  
              if submodule:
                  mod = self.import_module('%s.%s' % (mod.__name__, submodule))
  
              meta = self._meta(mod)
  
              if meta:
                  app.logger.info("Loading plugin {}.".format(mod))
                  meta(app, *args, **kwargs)
  
              result.append(mod)
  
          return result
  
      def __iter__(self):
          return iter(self._cache)
  
      def _meta(self, plugin):
          return getattr(plugin, 'register_plugin', None)
  
      @staticmethod
      def import_module(path):
          try:
              return import_module(path)
          except ImportError:
              return None
  
  
  # pymode:lint_ignore=F0401
  
subject: Sort imports.