Creating message parts

[Nicholas Cole]

Hi all,

I may have the wrong end of the stick entirely, but I'll try to be as
clear as possible.

I'm trying to create a message part that will later be attached to
another message.  However, if I do

E = email.mime.multipart.MIMEMultipart()
print E.as_string()

Then E is given a "MIME-Version: 1.0" header, which I don't think it
should have (the "parent" email message will have that header, of
course).

I have a feeling, therefore, that I am doing something wrong!  Should
I not be using the MIMEMultipart() calss for this purpose? And if not,
what should I be using?

Best wishes,

Nicholas
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[Oleg Broytmann-2]

On Wed, Sep 24, 2008 at 03:37:53PM +0100, Nicholas Cole wrote:

> E = email.mime.multipart.MIMEMultipart()
> print E.as_string()
>
> Then E is given a "MIME-Version: 1.0" header, which I don't think it
> should have (the "parent" email message will have that header, of
> course).
>
> I have a feeling, therefore, that I am doing something wrong!  Should
> I not be using the MIMEMultipart() calss for this purpose? And if not,
> what should I be using?

   MIMEMultipart is a class for the top-level part (the entire message).
For subparts use classes like MIMEText et al. Compare these 3 examples:

----- 1 -----
from email import MIMEText
msg = MIMEText.MIMEText("This is a simple message", _charset="latin-1")

msg["Subject"] = "Text"

print str(msg)
----- /1 -----

----- 2 -----
from email import MIMENonMultipart
msg = MIMENonMultipart.MIMENonMultipart("text", "plain", charset="latin-1")

msg["Subject"] = "Simple"
msg.set_payload("This is a simple message")

print str(msg)
----- /2 -----

----- 3 -----
from email import MIMEMultipart, MIMEText
msg = MIMEMultipart.MIMEMultipart()
msg["Subject"] = "Multipart"

part = MIMEText.MIMEText("This is a subpart", _charset="latin-1")
part["Subject"] = "Subpart"

msg.attach(part)
print str(msg)
----- /3 -----

Oleg.
--
     Oleg Broytmann            http://phd.pp.ru/            phd@...
           Programmers don't die, they just GOSUB without RETURN.
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[Mark Sapiro-3]

Nicholas Cole wrote:

>
>I'm trying to create a message part that will later be attached to
>another message.  However, if I do
>
>E = email.mime.multipart.MIMEMultipart()
>print E.as_string()
>
>Then E is given a "MIME-Version: 1.0" header, which I don't think it
>should have (the "parent" email message will have that header, of
>course).
>
>I have a feeling, therefore, that I am doing something wrong!  Should
>I not be using the MIMEMultipart() calss for this purpose? And if not,
>what should I be using?

See <http://docs.python.org/lib/module-email.mime.text.html>.

You should use classes like email.mime.application.MIMEApplication,
email.mime.image.MIMEImage, email.mime.text.MIMEText, etc. to create
the various message parts and then append them to the payload of the
parent message.

--
Mark Sapiro <mark@...>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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[Nicholas Cole]

On Wed, Sep 24, 2008 at 4:06 PM, Oleg Broytmann <phd@...> wrote:

> On Wed, Sep 24, 2008 at 03:37:53PM +0100, Nicholas Cole wrote:
>> E = email.mime.multipart.MIMEMultipart()
>> print E.as_string()
>>
>> Then E is given a "MIME-Version: 1.0" header, which I don't think it
>> should have (the "parent" email message will have that header, of
>> course).
>>
>> I have a feeling, therefore, that I am doing something wrong!  Should
>> I not be using the MIMEMultipart() calss for this purpose? And if not,
>> what should I be using?
>
>   MIMEMultipart is a class for the top-level part (the entire message).
> For subparts use classes like MIMEText et al. Compare these 3 examples:
>

> ----- 3 -----
> from email import MIMEMultipart, MIMEText
> msg = MIMEMultipart.MIMEMultipart()
> msg["Subject"] = "Multipart"
>
> part = MIMEText.MIMEText("This is a subpart", _charset="latin-1")
> part["Subject"] = "Subpart"
>
> msg.attach(part)
> print str(msg)
> ----- /3 -----
>
> Oleg.

Dear Oleg,

Thanks for the examples - things are looking clearer.  However, in
version 3, on my system the subpart is still given a MIME-Version
header.  Is this not incorrect?

Also, according to the documentation "A MIME-Version: header will also
be added" to the MIMEMultipart class, even though it actually seems to
be added by the MIMEBase class, and therefore to all subclasses.

Best wishes,

Nicholas
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