Question

以下Python函数导致附件被命名为“noname”，它应该是“text_file.txt”。正如您所看到的，我尝试了两种不同的MIMEBase和MIMEApplication方法。我也试过MIMEMultipart（'替代'）无济于事。

def send_email(from_addr, to_addr_list,
              subject, html_body,plain_text_body,
              login,
              password,
              smtpserver='smtp.gmail.com:587',
              cc_addr_list=None,
              attachment=None,
              from_name=None):

    message=MIMEMultipart()

    plain=MIMEText(plain_text_body,'plain')
    html=MIMEText(html_body,'html') 

    message.add_header('from',from_name)
    message.add_header('to',','.join(to_addr_list))
    message.add_header('subject',subject)

    if attachment!=None:
        #attach_file=MIMEBase('application',"octet-stream")
        #attach_file.set_payload(open(attachment,"rb").read())
        #Encoders.encode_base64(attach_file)
        #f.close()
        attach_file=MIMEApplication(open(attachment,"rb").read())
        message.add_header('Content-Disposition','attachment; filename="%s"' % attachment)
        message.attach(attach_file)


    message.attach(plain)
    message.attach(html)

    server = smtplib.SMTP(smtpserver)
    server.starttls()
    server.login(login,password)
    server.sendmail(from_addr, to_addr_list, message.as_string())
    server.quit()

我如何调用该函数：

send_email(
           from_addr=from_email,
           to_addr_list=["some_address@gmail.com"],
           subject=subject,
           html_body=html,
           plain_text_body=plain,
           login=login,
           password=password,
           from_name=display_name,
           attachment="text_file.txt"
           )

Answer 1

您的标头不正确。 filename是属性而不是字符串。

# Add header to variable with attachment file
attach_file.add_header('Content-Disposition', 'attachment', filename=attachment)
# Then attach to message attachment file    
message.attach(attach_file)

Answer 2

我认为这可能无关紧要，但对于那些感兴趣并遇到相同问题的人来说：

我也使用了Google API示例（不带附件的示例），并且我意识到仅当主题或正文中的文本不是完整的字符串（即要放置在主题或主体不是单个字符串而是字符串的集合。

更好地解释：

message = (service.users().messages().send(userId='me', body=body).execute())
body = ("Your OTP is", OTP)

此（body = ("Your OTP is", OTP)）可能适用于print（）命令，但在这种情况下不起作用。您可以更改：

message = (service.users().messages().send(userId='me', body=body).execute())
body = ("Your OTP is", OTP)

至：

CompleteString = "Your OTP is " + OTP
message = (service.users().messages().send(userId='me', body=body).execute())
body = (CompleteString)

以上几行将身体的两部分变成一个字符串。

也：作为附件放置的“ noname”文件仅包含写入的字符串。因此，如果您遵循以下步骤：

message = (service.users().messages().send(userId='me', body=body).execute())
body = ("Your OTP is", OTP)

因此，您将获得的所有文件均为：“您的OTP为”

我还添加了在这里修改现有示例代码后得到的全部代码：https://developers.google.com/gmail/api/quickstart/python

from __future__ import print_function
import pickle
import os.path
from googleapiclient.discovery import build
from google_auth_oauthlib.flow import InstalledAppFlow
from google.auth.transport.requests import Request
from email.mime.text import MIMEText
import base64

sender = "sender_mail"

print("Welcome to the Mail Service!")
reciever = input("Please enter whom you want to send the mail to - ")
subject = input("Please write your subject - ")
msg = input("Please enter the main body of your mail - ")

SCOPES = ['https://www.googleapis.com/auth/gmail.modify']
creds = None
if os.path.exists('token.pickle'):
    with open('token.pickle', 'rb') as token:
        creds = pickle.load(token)
# If there are no (valid) credentials available, let the user log in.
if not creds or not creds.valid:
    if creds and creds.expired and creds.refresh_token:
        creds.refresh(Request())
    else:
        flow = InstalledAppFlow.from_client_secrets_file(
            'credentials.json', SCOPES)
        creds = flow.run_local_server(port=0)
    # Save the credentials for the next run
    with open('token.pickle', 'wb') as token:
        pickle.dump(creds, token)
service = build('gmail', 'v1', credentials=creds)
message = MIMEText(msg)
message['to'] = reciever
message['from'] = sender
message['subject'] = subject
raw = base64.urlsafe_b64encode(message.as_bytes())
raw = raw.decode()
body = {'raw' : raw}
message = (service.users().messages().send(userId='me', body=body).execute())

请注意，此代码仅适用于通过邮件放置的 text 。

P.S。我正在使用Python 3.8，因此上述代码可能不适用于Python 2。

收到的电子邮件附件为'noname'

2 个答案: