Python-使用watchdog热更新

发布时间:2019-07-29 10:01:39编辑:auto阅读(2162)

    直接上代码:

    import importlib
    from watchdog.observers import Observer
    from watchdog.events import *
    
    
    class ScriptEventHandler(FileSystemEventHandler):
        def __init__(self):
            FileSystemEventHandler.__init__(self)
    
        # 文件移动
        def on_moved(self, event):
            if event.is_directory:
                print("directory moved from {0} to {1}".format(event.src_path, event.dest_path))
            else:
                print("file moved from {0} to {1}".format(event.src_path, event.dest_path))
    
        # 文件新建
        def on_created(self, event):
            if event.is_directory:
                print("directory created:{0}".format(event.src_path))
            else:
                self.reload_module(event.src_path)
                print("file created:{0}".format(event.src_path))
    
        # 文件删除
        def on_deleted(self, event):
            if event.is_directory:
                print("directory deleted:{0}".format(event.src_path))
            else:
                print("file deleted:{0}".format(event.src_path))
    
        # 文件修改
        def on_modified(self, event):
            if event.is_directory:
                print("directory modified:{0}".format(event.src_path))
            else:
                print("file modified:{0}".format(event.src_path))
                self.reload_module(event.src_path)
    
        # 重载模块
        def reload_module(self, module_name: str):
            module_name = module_name.replace('/', '.')
            module_name = module_name.replace('.py', '')
            instance = importlib.import_module(module_name)
            if instance:
                importlib.reload(instance)
    
    observer = Observer()
    event_handler = ScriptEventHandler()
    # ./test为需要监控的目录
    self.observer.schedule(event_handler,'./test', False)
    self.observer.start()

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