watchdog python實例化一個監控多個文件夾内新增文件的脚本，請給出三個不同的脚本並自行測試

在Python中，可以使用`watchdog`库来创建一个监控多个文件夹并检测新添加文件的简单脚本。首先，你需要安装`watchdog`库，可以使用pip安装：

pip install watchdog

以下是三个不同的脚本示例，每个脚本分别使用了`Observer`来监听指定目录的变化，并触发回调函数当有新的文件添加：

### 示例一 - 监听单个文件夹

import os
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler

class NewFileHandler(FileSystemEventHandler):
    def on_modified(self, event):
        if event.is_directory:
            return
        print(f"New file detected: {event.src_path}")

def monitor_folder(path):
    event_handler = NewFileHandler()
    observer = Observer()
    observer.schedule(event_handler, path, recursive=True)
    observer.start()

    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()
    observer.join()

# 替换为你要监控的文件夹路径
monitor_folder("/path/to/your/folder")

### 示例二 - 监听多个文件夹 (使用列表)

import os
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler

folders_to_watch = ["/path/to/folder1", "/path/to/folder2"]

class MultiFolderHandler(FileSystemEventHandler):
    def __init__(self):
        self.folders = folders_to_watch

    def on_modified(self, event):
        # ... (处理逻辑同上)

def start_monitors():
    event_handler = MultiFolderHandler()
    observers = {}

    for folder in event_handler.folders:
        observer = Observer()
        observer.schedule(event_handler, folder, recursive=True)
        observers[folder] = observer

    for observer in observers.values():
        observer.start()

    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        for observer in observers.values():
            observer.stop()
    for observer in observers.values():
        observer.join()

start_monitors()

### 示例三 - 使用装饰器自动注册监听

import os
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler

@observer.register
def handle_file_system_event(observer, event):
    if event.is_directory:
        return
    print(f"New file detected: {event.src_path}")

@observer.register
def monitor_folder(path):
    observer.schedule(handle_file_system_event, path, recursive=True)

if __name__ == "__main__":
    observer = Observer()
    observer.start()

    # 替换为你要监控的文件夹路径
    monitor_folder("/path/to/your/folder")

    try:
        while True:
            time.sleep(1)
    except KeyboardInterrupt:
        observer.stop()
    observer.join()

记得替换`"/path/to/your/folder"`为实际要监控的文件夹路径，然后运行脚本来测试。