主页 / 问题 / 1167524
Accepted
Sterri
Asked:2020-08-18 23:01:13 +0000 UTC2020-08-18 23:01:13 +0000 UTC

如何从 Gmail 中获取电子邮件？

  • 772

您想接收来自 Gmail 的电子邮件。尝试了以下代码：

import imaplib, email
def read_email_from_gmail():
    mail = imaplib.IMAP4_SSL('imap.gmail.com')
    mail.login('mymail@gmail.com','mypass')
    mail.select('inbox')

    type, data = mail.search(None, 'ALL')
    mail_ids = data[0]

    id_list = mail_ids.split()
    first_email_id = int(id_list[0])
    latest_email_id = int(id_list[-1])


    for i in range(latest_email_id,first_email_id, -1):
        type, data = mail.fetch(str(i), '(RFC822)' )

        for response_part in data:
            if isinstance(response_part, tuple):
                test = str(response_part)
                msg = email.message_from_string(test)
                email_subject = msg['subject']
                email_from = msg['from']
                print('From : ' + email_from + '\n')
                print('Subject : ' + email_subject + '\n')


read_email_from_gmail()

它没有用。如何实施？

PS（编者注：移自评论）
但让我们以这段代码为例。启动时出现以下错误：

print('From : ' + email_from + '\n'); 
TypeError: can only concatenate str (not "NoneType") to str".

通过替换print('From : ' + email_from + '\n')为更正print(email_from)。
结果，代码循环，输出None. 此外，问题明确指出“如何实现”，而不是“如何修复此代码”

python

1 个回答

  1. Best Answer

    例子：

    import re

    首先选择一个文件夹All Mail：

    In [311]: folder = [re.sub(r'.*?("\[G[^"]*").*', r'\1', f.decode("utf-8"))  for f in mail.list()[1] if br"\All " in f][0]

In [312]: mail.select(folder)
Out[312]: ('OK', [b'9355'])

    我们正在寻找包含以下词的电子邮件"test"：

    In [313]: typ, data = mail.search(None, '(SUBJECT "test")')

    找到的字母列表ID：

    In [314]: data
Out[314]: [b'1873 1875 1876 1878 1879 3047 3088 4607 4625 5176 5299 5681 7074 8667 9261']

    读取并解析找到的字母之一：

    In [315]: typ, d = mail.fetch('1879', '(RFC822)')

In [316]: msg = email.message_from_bytes(d[0][1])

    结果：

    In [317]: msg["subject"]
Out[317]: 'Re: test'

In [318]: msg["from"]
Out[318]: 'Max ****** <max.******@gmail.com>'

In [324]: msg.keys()
Out[324]:
['MIME-Version',
 'Received',
 'In-Reply-To',
 'References',
 'Date',
 'Delivered-To',
 'Message-ID',
 'Subject',
 'From',
 'To',
 'Content-Type',
 'Content-Transfer-Encoding']

In [325]: msg["Received"]
Out[325]: 'by 10.86.83.11 with HTTP; Tue, 27 Jan 2009 02:39:15 -0800 (PST)'

In [327]: msg["Content-Transfer-Encoding"]
Out[327]: 'base64'
    • 2

相关问题