_reloader.py 文件源码

def __init__(self, *args, **kwargs):
        ReloaderLoop.__init__(self, *args, **kwargs)
        from watchdog.observers import Observer
        from watchdog.events import FileSystemEventHandler
        self.observable_paths = set()

        def _check_modification(filename):
            if filename in self.extra_files:
                self.trigger_reload(filename)
            dirname = os.path.dirname(filename)
            if dirname.startswith(tuple(self.observable_paths)):
                if filename.endswith(('.pyc', '.pyo')):
                    self.trigger_reload(filename[:-1])
                elif filename.endswith('.py'):
                    self.trigger_reload(filename)

        class _CustomHandler(FileSystemEventHandler):

            def on_created(self, event):
                _check_modification(event.src_path)

            def on_modified(self, event):
                _check_modification(event.src_path)

            def on_moved(self, event):
                _check_modification(event.src_path)
                _check_modification(event.dest_path)

            def on_deleted(self, event):
                _check_modification(event.src_path)

        reloader_name = Observer.__name__.lower()
        if reloader_name.endswith('observer'):
            reloader_name = reloader_name[:-8]
        reloader_name += ' reloader'

        self.name = reloader_name

        self.observer_class = Observer
        self.event_handler = _CustomHandler()
        self.should_reload = False