code: def init(scope, app, settings):
      
      cfg = settings.get('rw.static', {})
      static = Static()
      scope['static'] = static
      scope['template_env'].globals['static'] = static
      for base_uri, sources in cfg.items():
          full_paths = []
          for source in sources:
              if isinstance(source, dict):
                  full_path = source['path']
                  full_paths.append(full_path.format(**os.environ))
                  continue
              elif ',' in source:
                  module_name, path = [part.strip()
                                       for part in source.split(',')]
              else:
                  module_name = source
                  path = 'static'
              full_path = pkg_resources.resource_filename(module_name, path)
              full_paths.append(full_path)
  
          app.root.mount('/' + base_uri + '/<h>/<path:path>',
                         StaticHandler, {'path': full_paths},
                         name='static_' + base_uri.replace('.', '_'))
  
          static.handlers.append((base_uri, StaticHandler, full_paths))
      static.setup()
docs: Plugin for serving static files in development mode