Python:每30秒列出一次文件，避免处理重复文件

import os
import time

def list_files(directory):
    files = []
    for filename in os.listdir(directory):
        if os.path.isfile(os.path.join(directory, filename)):
            files.append(filename)
    return files

def process_files(directory):
    processed_files = set()
    while True:
        files = list_files(directory)
        new_files = [filename for filename in files if filename not in processed_files]
        for filename in new_files:
            # 处理文件的逻辑
            print("Processing file:", filename)
            # 将已处理的文件添加到集合中
            processed_files.add(filename)
        time.sleep(30)

process_files("/path/to/directory")