# 最簡(jiǎn)單的文件讀取
with open('notes.txt', 'r', encoding='utf-8') as f:
    content = f.read()
print(content)

# 寫(xiě)入文本文件
with open('output.txt', 'w', encoding='utf-8') as f:
    f.write('這是第一行\(zhòng)n')
    f.write('這是第二行\(zhòng)n')

import os

def batch_rename(folder_path, old_str, new_str):
    """批量重命名文件，將文件名中的old_str替換為new_str"""
    count = 0
    for filename in os.listdir(folder_path):
        if old_str in filename:
            old_file = os.path.join(folder_path, filename)
            new_file = os.path.join(folder_path, filename.replace(old_str, new_str))
            os.rename(old_file, new_file)
            count += 1
    return count

# 使用示例
folder = '測(cè)試文件夾'
renamed = batch_rename(folder, 'old', 'new')
print(f'成功重命名了{(lán)renamed}個(gè)文件')

# 導(dǎo)入所需模塊
import time
from watchdog.observers import Observer  # 用于監(jiān)控文件系統(tǒng)事件
from watchdog.events import FileSystemEventHandler  # 文件系統(tǒng)事件處理器基類(lèi)

class MyHandler(FileSystemEventHandler):
   def on_modified(self, event):
       """當(dāng)監(jiān)控的文件發(fā)生修改時(shí)觸發(fā)"""
       if not event.is_directory:  # 僅處理文件變化,忽略目錄
           print(f'文件發(fā)生變化：{event.src_path}')
           
   def on_created(self, event):
       """當(dāng)有新文件創(chuàng)建時(shí)觸發(fā)"""
       if not event.is_directory:  # 僅處理文件創(chuàng)建,忽略目錄
           print(f'新建文件：{event.src_path}')

def monitor_folder(path):
   """
   監(jiān)控指定文件夾的變化
   參數(shù):
       path: 要監(jiān)控的文件夾路徑
   """
   event_handler = MyHandler()  # 創(chuàng)建事件處理器實(shí)例
   observer = Observer()  # 創(chuàng)建觀(guān)察者實(shí)例
   observer.schedule(event_handler, path, recursive=False)  # 設(shè)置監(jiān)控的路徑(不遞歸子目錄)
   observer.start()  # 啟動(dòng)監(jiān)控
   
   try:
       while True:
           time.sleep(1)  # 每秒檢查一次
   except KeyboardInterrupt:  # 捕獲Ctrl+C中斷信號(hào)
       observer.stop()  # 停止監(jiān)控
   observer.join()  # 等待observer完全停止

# 程序入口
if __name__ == '__main__':
   monitor_folder('要監(jiān)控的文件夾路徑')  # 傳入要監(jiān)控的文件夾路徑

import os
if os.path.exists('文件路徑'):
    print('文件存在')
else:
    print('文件不存在')