Python - 电子邮件发送在Raspberry Pi上显示无效语法

Question

我有一个python程序可以从gmail帐户发送电子邮件，该程序适用于Ubuntu，但不适用于Raspberry Pi。它显示下一个错误：

    f"attachment; filename= {filename}",  <=it shows problem on this double quotation.

当我从该字符串的开头删除f时，它似乎停止显示错误 msg，但这会粉碎文件以进行发送，并且从电子邮件下载后我无法打开它。

有什么东西与树莓派不匹配吗？有人可以告诉我如何解决这个问题吗？谢谢。

这是代码：

import email, smtplib, ssl
from email import encoders
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
subject = "Detection!"
body = "There was a detection from Pi"
sender_email = "[e-mail]"
receiver_email = "[e-mail]"
password = "example"
# Create a multipart message and set headers
message = MIMEMultipart()
message["From"] = sender_email
message["To"] = receiver_email
message["Subject"] = subject
message["Bcc"] = receiver_email  # Recommended for mass emails
# Add body to email
message.attach(MIMEText(body, "plain"))
filename = "image.jpeg"  # In same directory as script
# Open PDF file in binary mode
with open(filename, "rb") as attachment:
    # Add file as application/octet-stream
    # Email client can usually download this automatically as attachment
    part = MIMEBase("application", "octet-stream")
    part.set_payload(attachment.read())
# Encode file in ASCII characters to send by email
encoders.encode_base64(part)
# Add header as key/value pair to attachment part
part.add_header(
    "Content-Disposition",
    f"attachment; filename= {filename}", # HERE IS THE INVALID SYNTAX ERROR
)
# Add attachment to message and convert message to string
message.attach(part)
text = message.as_string()
# Log in to server using secure context and send email
context = ssl.create_default_context()
with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
    server.login(sender_email, password)
    server.sendmail(sender_email, receiver_email, text)

Answer 1

f-string是Python 3.6中的新功能。您的 Pi 可能使用的是旧版本。

您可以改用 format 方法：

part.add_header(
    "Content-Disposition",
    "attachment; filename={}".format(filename),
)