Binary file email attachment problem

Question

Using Python 3.1.2 I am having a problem sending binary attachment files (jpeg, pdf, etc.) - MIMEText attachments work fine. The code in question is as follows...

Answer 1

for file in self.attachments:
   fp = open(file,"rb")    
   part = MIMEApplication( fp.read() )    
   fp.close()    
   encoders.encode_base64(part)

   # the miracle
   part.set_payload( part.get_payload().decode('ASCII') )

   part.add_header('Content-Disposition', 'attachment; filename="%s"' % file)    
   msg.attach(part)