linux - Python SMTP 函数将 .txt 文件作为 .bin 文件类型发送

Question

当调用下面的 SMTP 函数时，消息被发送到我的邮箱，但日志文件作为 .bin 文件类型附加。打开时，.bin 文件读取起来就像是 .txt 文件类型一样，但我无法在我的移动设备上打开 .bin 文件，这对我来说是个大问题。有什么方法可以使用原始文件类型将此文件附加到邮件中吗？非常感谢任何反馈。

编辑:当我从 Windows 机器上运行时，文件以其原始文件类型 (.txt) 发送，但当我从 Linux 机器上运行时，文件类型被错误处理。我已经使用 Outlook(首选)和 Gmail 对此进行了测试。 Outlook 将文件识别为 .bin 文件类型，而 Gmail 根本无法识别文件类型。

from pathlib import Path
data_folder = Path("path/to/working/directory")
log_file = Path(data_folder / "log.txt")

def sendmail():

    maildate = str(datetime.now().strftime("%m" + "/" + "%d" + "/" + "%Y"))
    subjectdate = str("Subject - " + maildate)
    
    import smtplib
    from email.mime.base import MIMEBase
    from email.mime.multipart import MIMEMultipart
    from email import encoders

    msg = MIMEMultipart()
    msg['Subject'] = subjectdate
    msg['From'] = 'from@from.com'
    msg['To'] = 'to@to.com'

    attachment = MIMEBase('application', "octet-stream")
    attachment.set_payload(open(log_file, "r").read())
    encoders.encode_base64(attachment)
    attachment.add_header('Content-Disposition', 'attachment, filename=log_file')

    msg.attach(attachment)

    s = smtplib.SMTP('sender@sender.com')
    s.send_message(msg)
    s.quit()

Answer 1

发送的文件没有扩展名，因为文件名被解释为“log_file”而不是 log_file 的值。下面的代码按预期工作并将文件正确附加到邮件中。

from pathlib import Path
data_folder = Path("path/to/working/directory")
log_file = Path(data_folder / "log.txt")

def sendmail():

    maildate = str(datetime.now().strftime("%m" + "/" + "%d" + "/" + "%Y"))
    subjectdate = str("Subject - " + maildate)

    import smtplib
    from email.mime.base import MIMEBase
    from email.mime.multipart import MIMEMultipart
    from email import encoders

    msg = MIMEMultipart()
    msg['Subject'] = subjectdate
    msg['From'] = 'from@from.com'
    msg['To'] = 'to@to.com'

    attachment = MIMEBase('application', "octet-stream")
    attachment.set_payload(open(log_file, "r").read())
    encoders.encode_base64(attachment)
    attachment.add_header('Content-Disposition', 'attachment, filename="log.txt"')

    msg.attach(attachment)

    s = smtplib.SMTP('sender@sender.com')
    s.send_message(msg)
    s.quit()