Python 3.8：从内存中处理从Outlook电子邮件中提取的Excel文件

Question

我正在执行以下操作的脚本

1）浏览我的Outlook收件箱2）停在符合我条件的电子邮件中3）抓取其中的.XLS Excel文件附件（仅1个文件）4）按摩那里的数据5）将结果文件保存在文件夹中

问题是我试图让Python从内存中处理文件并且读取文件时出现以下错误。

AttributeError: Item.Read

我感谢这里的所有提示。

import win32com.client
import os
import xlrd

from io       import BytesIO 
from datetime import datetime, date
from openpyxl import load_workbook


# Retrieve the email attachment from Outlook.
outlook = win32com.client.Dispatch("Outlook.Application").GetNamespace("MAPI")


# Access the Inbox.
inbox = outlook.GetDefaultFolder(6)

messages = inbox.Items
for message in messages:

    if message.Subject == "XYZ" and message.Senton.date() == date.today():

        attachments = message.Attachments
        a   = attachments.Item(1)


##### Most likely I am missing something between these 2 lines
workbook = xlrd.open_workbook(file_contents=BytesIO(a.read()))

Answer 1

我进行了一次愉快的网上追逐，并在此PDF中找到了此代码示例

https://github.com/python-excel/tutorial/raw/master/python-excel.pdf

from mmap import mmap,ACCESS_READ
from xlrd import open_workbook
print open_workbook('simple.xls')
with open('simple.xls','rb') as f:
 print open_workbook(
 file_contents=mmap(f.fileno(),0,access=ACCESS_READ)
 )
aString = open('simple.xls','rb').read()
print open_workbook(file_contents=aString)