On Thu, Apr 29, 2010 at 1:06 PM, Alan Harris-Reid
<aharrisr...@googlemail.com> wrote:
> Hi there,
>
> I want to send an email with an attachment using the following code (running
> under Python 3.1, greatly simplified to show example)
>
> from email.mime.multipart import MIMEMultipart
> from email.mime.text import MIMEText
>
> msg = MIMEMultipart()
> msg['From'] = from_addr
> msg['To'] = to_addr
> msg['Subject'] = subject
> msg.attach(MIMEText(body))
>
> fp = open(att_file)
> att_msg = MIMEText(fp.read())
> attachment = att_msg.add_header('Content-Disposition', 'attachment',
> filename=att_file)
> msg.attach(attachment)
>
> # set string to be sent as 3rd parameter to smptlib.SMTP.sendmail()
> send_string = msg.as_string()
>
>
> The attachment object msg1 returns 'email.mime.text.MIMEText' object at
> <address>', but when the att_msg.add_header(...) line runs the result is
> None, hence the program falls-over in msg.as_string() because no part of the
> attachment can have a None value. (Traceback shows "'NoneType' object has
> no attribute 'get_content_maintype'" in line 118 of _dispatch in
> generator.py, many levels down from msg.as_string())
>
> Has anyone any idea what the cause of the problem might be? Any help would
> be appreciated.
.add_header() modifies the MIMEText object *in-place*; per Python
conventions, mutator methods return None; hence, attachment = None.
Try instead (untested):
att_msg.add_header('Content-Disposition', 'attachment', filename=att_file)
msg.attach(att_msg)
Cheers,
Chris
--
http://blog.rebertia.com
--
http://mail.python.org/mailman/listinfo/python-list
