如何編寫一個 function 來生成帶有 imap_tools 的郵箱登錄名？

Question

我創建了一個登錄郵箱的助手 function。

import imap_tools

def mailbox_login():
    try:
        with imap_tools.MailBoxUnencrypted(ENV["IMAP4_FQDN"]).login(
            ENV["RECEIVING_EMAIL_USER"], ENV["RECEIVING_EMAIL_PASSWORD"]
        ) as mailbox:
            print("Successfully logged into the mailbox.")
            return mailbox
    except imap_tools.MailboxLoginError as error:
        print(f"CRITICAL: Failed to login to the mailbox: {error}")

另一個function需要郵箱連接。

def email_count():
    """
    Get all emails from the mail server via IMAP
    """
    msgs = []
    mailbox = mailbox_login()
    for msg in mailbox.fetch():
        msgs.append(msg)
    return msgs

當我運行email_count()時，出現以下錯誤：

imaplib.IMAP4.error: command SEARCH illegal in state LOGOUT, only allowed in states SELECTED

我一離開with語句的scope，它就退出郵箱了。 離開mailbox_login()后有什么方法可以保持連接嗎？

Answer 1

成功連接到 IMAP-Server 后需要 select 一個郵箱。 利用

mailbox.select()

連接后和搜索前。

Answer 2

嘗試閱讀上下文管理器 -與

https://docs.python.org/3/reference/compound_stmts.html#the-with-statement