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allendowney
GitHub Repository: allendowney/cpython
 Path: blob/main/Doc/includes/email-alternative.py
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#!/usr/bin/env python3

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import smtplib

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from email.message import EmailMessage

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from email.headerregistry import Address

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from email.utils import make_msgid

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# Create the base text message.

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msg = EmailMessage()

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msg['Subject'] = "Ayons asperges pour le déjeuner"

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msg['From'] = Address("Pepé Le Pew", "pepe", "example.com")

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msg['To'] = (Address("Penelope Pussycat", "penelope", "example.com"),

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             Address("Fabrette Pussycat", "fabrette", "example.com"))

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msg.set_content("""\

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Salut!

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Cela ressemble à un excellent recipie[1] déjeuner.

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[1] http://www.yummly.com/recipe/Roasted-Asparagus-Epicurious-203718

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--Pepé

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""")

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# Add the html version.  This converts the message into a multipart/alternative

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# container, with the original text message as the first part and the new html

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# message as the second part.

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asparagus_cid = make_msgid()

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msg.add_alternative("""\

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<html>

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  <head></head>

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  <body>

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    <p>Salut!</p>

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    <p>Cela ressemble à un excellent

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        <a href="http://www.yummly.com/recipe/Roasted-Asparagus-Epicurious-203718">

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            recipie

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        </a> déjeuner.

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    </p>

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    <img src="cid:{asparagus_cid}" />

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  </body>

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</html>

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""".format(asparagus_cid=asparagus_cid[1:-1]), subtype='html')

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# note that we needed to peel the <> off the msgid for use in the html.

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# Now add the related image to the html part.

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with open("roasted-asparagus.jpg", 'rb') as img:

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    msg.get_payload()[1].add_related(img.read(), 'image', 'jpeg',

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                                     cid=asparagus_cid)

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# Make a local copy of what we are going to send.

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with open('outgoing.msg', 'wb') as f:

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    f.write(bytes(msg))

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# Send the message via local SMTP server.

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with smtplib.SMTP('localhost') as s:

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    s.send_message(msg)

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