一站式网上办事大厅

import threading

def download_file(file_url, file_path):

def _download():

# 模拟下载逻辑

print(f"开始下载 {file_url} 到 {file_path}")

# 实际下载操作（此处省略）

print("下载完成")

thread = threading.Thread(target=_download)

thread.start()

if __name__ == "__main__":

file_url = "http://example.edu/files/largefile.zip"

file_path = "/path/to/download/"

download_file(file_url, file_path)

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import hashlib

def compute_hash(file_path):

sha256 = hashlib.sha256()

with open(file_path, 'rb') as f:

while chunk := f.read(8192):

sha256.update(chunk)

return sha256.hexdigest()

综合信息门户

def upload_file(file_path):

local_hash = compute_hash(file_path)

remote_hashes = get_remote_hashes() # 获取远程服务器已有的哈希值列表

if local_hash in remote_hashes:

print("文件已存在，无需上传")

else:

print("开始上传...")

# 真实上传逻辑

print("上传完成")

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