old_contents: import os
  
  import yaml
  import logbook
  
  from .base import SubsystemBase
  
  _logger = logbook.Logger(__name__)
  
  
  class SubsystemsManager(object):
  
      def __init__(self, project):
          super(SubsystemsManager, self).__init__()
          self.project = project
          self._subsystems = {}
          self._load_project_subsystems()
  
      def _load_project_subsystems(self):
          for directory in os.listdir(self.project.root):
              path = os.path.join(self.project.root, directory)
              yml = os.path.join(path, '.cob.yml')
              if not os.path.isfile(yml):
                  continue
              with open(yml) as f:
                  config = yaml.load(f.read())
              _logger.debug(
                  'Detected module in {} (subsystem: {[type]}', directory, config)
              subsystem_cls = self._get_subsystem_by_module_type(config['type'])
              subsystem = self._subsystems.get(subsystem_cls.NAME)
              if subsystem is None:
                  subsystem = self._subsystems[
                      subsystem_cls.NAME] = subsystem_cls(self)
              subsystem.add_module(path, config)
  
      def _get_subsystem_by_module_type(self, module_type):
          return SubsystemBase.SUBSYSTEM_BY_NAME[module_type]
  
      def activate(self):
          for subsystem in self:
              subsystem.activate()
  
      def __iter__(self):
          return iter(self._subsystems.values())
  
  
  ##########################################################################
  # import all known subsystems to ensure registration
  from . import flask_blueprint_subsystem  # pylint: disable=unused-import
  from . import static_subsystem  # pylint: disable=unused-import
  from . import models_subsystem  # pylint: disable=unused-import
  
new_contents: import os
  
  import yaml
  import logbook
  
  from .base import SubsystemBase
  
  _logger = logbook.Logger(__name__)
  
  
  class SubsystemsManager(object):
  
      def __init__(self, project):
          super(SubsystemsManager, self).__init__()
          self.project = project
          self._subsystems = {}
          self._load_project_subsystems()
  
      def _load_project_subsystems(self):
          for directory in os.listdir(self.project.root):
              _logger.trace('Examining {}...', directory)
              path = os.path.join(self.project.root, directory)
              yml = os.path.join(path, '.cob.yml')
              if not os.path.isfile(yml):
                  _logger.trace('No cob file detected ({}). Skipping...', yml)
                  continue
              with open(yml) as f:
                  config = yaml.load(f.read())
              _logger.trace(
                  'Detected module in {} (subsystem: {[type]}', directory, config)
              subsystem_cls = self._get_subsystem_by_module_type(config['type'])
              subsystem = self._subsystems.get(subsystem_cls.NAME)
              if subsystem is None:
                  subsystem = self._subsystems[
                      subsystem_cls.NAME] = subsystem_cls(self)
              subsystem.add_module(path, config)
  
      def _get_subsystem_by_module_type(self, module_type):
          return SubsystemBase.SUBSYSTEM_BY_NAME[module_type]
  
      def activate(self):
          for subsystem in self:
              subsystem.activate()
  
      def __iter__(self):
          return iter(self._subsystems.values())
  
  
  ##########################################################################
  # import all known subsystems to ensure registration
  from . import flask_blueprint_subsystem  # pylint: disable=unused-import
  from . import static_subsystem  # pylint: disable=unused-import
  from . import models_subsystem  # pylint: disable=unused-import
  
subject: Debug logs