在 Python 中发送带有多个附件的电子邮件

Posted 2023-02-19

【中文标题】在 Python 中发送带有多个附件的电子邮件

【英文标题】：Sending email with multiple attachments in Python

【发布时间】：2021-12-30 10:36:14

【问题描述】：

我正在尝试将 2 个文件附加到电子邮件中，但它失败了 - raise TypeError("set_content 在多部分上无效") TypeError: set_content 在多部分上无效

代码：

date_string = f'datetime.now():%Y-%m-%dT%H_%M_%S%z'

def send_mail_with_excel(recipient_email, subject, content, date_time):
    input_file = "C:\\scripts\\mail_send\\remediated_data_" + date_time + ".csv"
    msg = EmailMessage()
    msg['Subject'] = subject
    msg['From'] = SENDER_EMAIL
    msg['To'] = recipient_email
    msg.set_content(content)

    with open(input_file, 'rb') as f:
        file_data = f.read()
    msg.add_attachment(file_data, maintype="application", subtype="csv", filename=input_file)

    multiAbort_file = "C:\\scripts\\mail_send\\multi_aborts_data_"+ date_time + ".csv"
    if os.path.isfile(multiAbort_file):
        with open(multiAbort_file, 'rb') as f:
            file_data = f.read()
        msg.add_attachment(file_data, maintype="application", subtype="csv", filename=multiAbort_file)
        msg.set_content(content+"\n Note : there is another list of items that are aborted multiple times in multi_aborts file, please restart these to continue")

    with smtplib.SMTP('smtp-mail.outlook.com', 587) as smtp:
        smtp.starttls()
        smtp.login(SENDER_EMAIL, APP_PASSWORD)
        smtp.send_message(msg)

send_mail_with_excel(["[e-mail]"], "Remediated List of items" + date_string,
                                 "Remediated List of items " + date_string, date_string)

队形出了什么问题？

【参考方案1】：

在调用set_content 之前，您应该全面评估content - 不要调用set_content 两次，也不要在添加附件之后调用它。

因此，将部分代码更改为如下所示：

multiAbort_file = "C:\\scripts\\mail_send\\multi_aborts_data_"+ date_time + ".csv"
has_abort = os.path.isfile(multiAbort_file)

if has_abort:
    content = content + "\n Note : there is another list of items that are aborted multiple times in multi_aborts file, please restart these to continue"

msg.set_content(content)

with open(input_file, 'rb') as f:
    file_data = f.read()
msg.add_attachment(file_data, maintype="application", subtype="csv", filename=input_file)

if has_abort:
    with open(multiAbort_file, 'rb') as f:
        file_data = f.read()
    msg.add_attachment(file_data, maintype="application", subtype="csv", filename=multiAbort_file)

【讨论】：

非常感谢您帮助重新组织和清理。尝试过，它也适用于多个附件。