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#28042 closed Bug (fixed)

mimetype Fallback for attachments passed to EmailMessage.init removed

Reported by:	Dariusz Paluch	Owned by:	Nikolay
Component:	Core (Mail)	Version:	1.11
Severity:	Release blocker	Keywords:
Cc:		Triage Stage:	Accepted
Has patch:	yes	Needs documentation:	no
Needs tests:	no	Patch needs improvement:	yes
Easy pickings:	no	UI/UX:	no

Description (last modified by Dariusz Paluch)

>>> m = EmailMessage(attachments=[('filename1', 'content1',)])
>>> m.attach('filename2', 'content2')
>>> m.attachments
[('filename1', 'content1'),
 ('filename2', 'content2', 'application/octet-stream')]
>>> m.message()
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/IPython/core/interactiveshell.py", line 2881, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-53-5151166d7cfd>", line 1, in <module>
    m.message()
  File "/usr/local/lib/python3.4/dist-packages/django/core/mail/message.py", line 302, in message
    msg = self._create_message(msg)
  File "/usr/local/lib/python3.4/dist-packages/django/core/mail/message.py", line 399, in _create_message
    return self._create_attachments(msg)
  File "/usr/local/lib/python3.4/dist-packages/django/core/mail/message.py", line 412, in _create_attachments
    msg.attach(self._create_attachment(*attachment))
  File "/usr/local/lib/python3.4/dist-packages/django/core/mail/message.py", line 450, in _create_attachment
    attachment = self._create_mime_attachment(content, mimetype)
  File "/usr/local/lib/python3.4/dist-packages/django/core/mail/message.py", line 422, in _create_mime_attachment
    basetype, subtype = mimetype.split('/', 1)
AttributeError: 'NoneType' object has no attribute 'split'

This code was work in 1.10