python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Doc/includes/email-mime.py

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+# Import smtplib for the actual sending function
+import smtplib
+
+# And imghdr to find the types of our images
+import imghdr
+
+# Here are the email package modules we'll need
+from email.message import EmailMessage
+
+# Create the container email message.
+msg = EmailMessage()
+msg['Subject'] = 'Our family reunion'
+# me == the sender's email address
+# family = the list of all recipients' email addresses
+msg['From'] = me
+msg['To'] = ', '.join(family)
+msg.preamble = 'Our family reunion'
+
+# Open the files in binary mode.  Use imghdr to figure out the
+# MIME subtype for each specific image.
+for file in pngfiles:
+    with open(file, 'rb') as fp:
+        img_data = fp.read()
+    msg.add_attachment(img_data, maintype='image',
+                                 subtype=imghdr.what(None, img_data))
+
+# Send the email via our own SMTP server.
+with smtplib.SMTP('localhost') as s:
+    s.send_message(msg)