Outlook特定发件人附件下载Python脚本Credentials导入报错求助

错误原因 #

出现ImportError: cannot import name 'Credentials' from partially initialized module 'exchangelib'的核心原因：

• 导入路径过时：exchangelib版本更新后，Credentials的导入位置从exchangelib.util迁移到了主模块exchangelib下
• 文件命名冲突：若你的脚本文件名为exchangelib.py，会和库本身重名，触发循环导入问题

解决步骤 #

1. 修正导入语句
   将原有两行导入代码：

from exchangelib import Account, DELEGATE 
from exchangelib.util import Credentials

替换为：

from exchangelib import Account, DELEGATE, Credentials

2. 升级exchangelib版本
   如果修正导入后仍报错，检查并升级到最新稳定版：

pip install --upgrade exchangelib

3. 排查文件命名冲突
   确保你的脚本文件名不是exchangelib.py，避免覆盖库模块导致导入失败。

修正后的完整代码 #

from exchangelib import Account, DELEGATE, Credentials


def download_attachments(username, password, sender_email, save_path):
    
    credentials = Credentials(username, password)
    
    account = Account(username, credentials=credentials, autodiscover=True, access_type=DELEGATE)
    
    for item in account.inbox.filter(sender__icontains=sender_email).order_by('-datetime_received')[:5]:
        
        print(f"Subject: {item.subject}")
        print(f"From: {item.sender.email_address}")
        print(f"Received: {item.datetime_received}")

        if item.attachments:
            for attachment in item.attachments:
                save_file_path = f"{save_path}/{attachment.name}"
                with open(save_file_path, "wb") as f:
                    f.write(attachment.content)

                print(f"Attachment '{attachment.name}' downloaded to {save_file_path}")

if __name__ == "__main__":
    username = "*****@outlook.com"
    password = "your_password"
    sender_email = "******@outlook.com"
    
    save_path = input("Enter the path to save attachments (default is current directory): ") or "."

    download_attachments(username, password, sender_email, save_path)

内容的提问来源于stack exchange，提问作者vineesha shyamala