Python IMAP 抓取程序无限期挂起

Question

我正在尝试从我有权访问的 Gmail 帐户中的特定文件夹中抓取数据。

我最近尝试运行ning this code 在 Windows 7 上使用 Python 2.7，同时登录了感兴趣的 Gmail 帐户。出于某种原因，尽管它似乎运行很长时间（我将其放置了长达 40 分钟）而没有完成或提供错误。

就目前而言，我在 Gmail 帐户中定位的文件夹只有大约 50 封简单的文本电子邮件，没有附件、图片或任何可能表明该过程应该花费很长时间的内容。在使用 IMAP 做类似的事情之前，有没有人遇到过这样的问题？

完整性代码：

#!/usr/bin/env python
#
# Very simple Python script to dump all emails in an IMAP folder to files.  
# This code is released into the public domain.
#
# RKI Nov 2013
#
import sys
import imaplib
import getpass

IMAP_SERVER = 'imap.gmail.com'
EMAIL_ACCOUNT = "notatallawhistleblowerIswear@gmail.com"
EMAIL_FOLDER = "Top Secret/PRISM Documents"
OUTPUT_DIRECTORY = 'C:/src/tmp'

PASSWORD = getpass.getpass()


def process_mailbox(M):
    """
    Dump all emails in the folder to files in output directory.
    """

    rv, data = M.search(None, "ALL")
    if rv != 'OK':
        print "No messages found!"
        return

    for num in data[0].split():
        rv, data = M.fetch(num, '(RFC822)')
        if rv != 'OK':
            print "ERROR getting message", num
            return
        print "Writing message ", num
        f = open('%s/%s.eml' %(OUTPUT_DIRECTORY, num), 'wb')
        f.write(data[0][1])
        f.close()

def main():
    M = imaplib.IMAP4_SSL(IMAP_SERVER)
    M.login(EMAIL_ACCOUNT, PASSWORD)
    rv, data = M.select(EMAIL_FOLDER)
    if rv == 'OK':
        print "Processing mailbox: ", EMAIL_FOLDER
        process_mailbox(M)
        M.close()
    else:
        print "ERROR: Unable to open mailbox ", rv
    M.logout()

if __name__ == "__main__":
    main()

Answer 1

代码对我来说工作正常。下面，我在您的代码中添加了一些调试打印（使用 pprint) to view the attributes of the IMAP4_SSL object M. My Gmail uses two factor authentication so I needed to setup a gmail app password

from pprint import pprint 

# ....

M = imaplib.IMAP4_SSL(IMAP_SERVER)
print('---- Attributes of the IMAP4_SSL connection before login ----')
pprint(vars(M))

M.login(EMAIL_ACCOUNT, PASSWORD)
print('\n \n')
print('---- Attributes of the IMAP4_SSL connection after login ----')
pprint(vars(M))

# open specific folder
rv, data = M.select(EMAIL_FOLDER)
print('\n \n')
print('---- Data returned from select of folder = {}'.format(data))

检查第一个 pprint(vars(M))：
1. 'welcome': '\* OK Gimap ready for requests from ...
2. 'port': 993,
检查第二个 pprint(vars(M))：
1. _cmd_log 登录成功：6: ('< PJIL1 OK **@gmail.com authenticated (Success)

M.select(EMAIL_FOLDER)

data 应该是可供下载的电子邮件数量。

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