1# Copyright (C) 2001-2006 Python Software Foundation 2# Author: Barry Warsaw 3# Contact: email-sig@python.org 4 5"""Class representing image/* type MIME documents.""" 6 7__all__ = ['MIMEImage'] 8 9import imghdr 10 11from email import encoders 12from email.mime.nonmultipart import MIMENonMultipart 13 14 15 16class MIMEImage(MIMENonMultipart): 17 """Class for generating image/* type MIME documents.""" 18 19 def __init__(self, _imagedata, _subtype=None, 20 _encoder=encoders.encode_base64, *, policy=None, **_params): 21 """Create an image/* type MIME document. 22 23 _imagedata is a string containing the raw image data. If this data 24 can be decoded by the standard Python `imghdr' module, then the 25 subtype will be automatically included in the Content-Type header. 26 Otherwise, you can specify the specific image subtype via the _subtype 27 parameter. 28 29 _encoder is a function which will perform the actual encoding for 30 transport of the image data. It takes one argument, which is this 31 Image instance. It should use get_payload() and set_payload() to 32 change the payload to the encoded form. It should also add any 33 Content-Transfer-Encoding or other headers to the message as 34 necessary. The default encoding is Base64. 35 36 Any additional keyword arguments are passed to the base class 37 constructor, which turns them into parameters on the Content-Type 38 header. 39 """ 40 if _subtype is None: 41 _subtype = imghdr.what(None, _imagedata) 42 if _subtype is None: 43 raise TypeError('Could not guess image MIME subtype') 44 MIMENonMultipart.__init__(self, 'image', _subtype, policy=policy, 45 **_params) 46 self.set_payload(_imagedata) 47 _encoder(self) 48