Python gmail api send email with attachment pdf all blank

Question

I am using python 3.5 and below code is mostly from the google api page... https://developers.google.com/gmail/api/guides/sending slightly revised for python 3.x

i could successfully send out the email with the content text and an attachment pdf but the pdf attached is completely blank..

please help and thanks in advance

def create_message_with_attachment(bcc, subject, message_text,  file,sender='me' ):
  message = MIMEMultipart()
  message['bcc'] = bcc
  message['from'] = sender
  message['subject'] = subject

  msg = MIMEText(message_text)
  message.attach(msg)

  content_type, encoding = mimetypes.guess_type(file)

  main_type, sub_type = content_type.split('/', 1)
  fp = open(file, 'rb')
  msg = MIMEBase(main_type, sub_type)
  msg.set_payload(fp.read())
  fp.close()
  filename = os.path.basename(file)
  msg.add_header('Content-Disposition', 'attachment', filename=filename)
  message.attach(msg)

  raw = base64.urlsafe_b64encode(message.as_bytes())
  raw = raw.decode()
  return {'raw':raw}

Answer 1

you just forgot to encode the attachment. Replace two lines of your code with those:

  import email.encoders

  ...
  msg.add_header('Content-Disposition', 'attachment',filename=filename)
  email.encoders.encode_base64(msg)
  message.attach(msg)
  ...