如何从python的电子邮件附件中提取带有密码的Zip文件

问题描述

我正在尝试从电子邮件中提取一个zip文件附件。我当前的代码可以抓取zip文件，但是此后，我迷失了如何打开zip文件，输入密码以及将其中产生的.xlsx文件转换为熊猫数据框的问题。

import json
import os
import boto3
import email

import utils.mail_operations as mail






def lambda_handler(event,context):
        
        region = os.environ["AWS_REGION"]
        msg_id = event["messageId"]
        

        email_content = mail.download_email(msg_id,region)
        attachment_data = mail.parse_mail_attachments(email_content)
        
   
   
    
    
        
        return {
        'statusCode': 200,'body': 'Success'
        }

下面是mail_operations.py文件，其中包含用于提取电子邮件和获取zip文件的操作。

import email
import boto3
import logging
import os
from botocore.exceptions import ClientError




def download_email(message_id,region_name):
    
    workmail_message_flow = boto3.client('workmailmessageflow',region_name=region_name)
    response = None

    try:
        response = workmail_message_flow.get_raw_message_content(messageId=message_id)
    except ClientError as e:
        if e.response['Error']['Code'] == 'ResourceNotFoundException':
            logger.error(f"Message {message_id} does not exist. Messages in transit are no longer accessible after 1 day. \
                    See: https://docs.aws.amazon.com/workmail/latest/adminguide/lambda-content.html for more details.")
        raise(e)
    
    email_content = response['messageContent'].read()
    return email_content
    
    
def parse_mail_attachments(email_content):
    """ convert email content bytes and return a dictionary containing the filenames and
    their corresponding data in bytes

    Args:
        email_content (Bytes): email content in bytes
    
    Returns:
        parsed_data: Dictionary containing filename as a key and data as bytes.
    """
    attachment_data = {}
    # Get the actual message
    msg = email.message_from_bytes(email_content)
    # Walk through the message
    for part in msg.walk():
        if part.get_content_maintype() == 'multipart':
            continue
        if part.get('Content-disposition') is None:
            continue
        # Get the filename of the attachment
        filename = part.get_filename()
        attachment_data[filename] = part.get_payload(decode=True)
    return attachment_data

解决方法

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