def attach_related_file(self, path, mimetype=None):
        filename = os.path.basename(path)
        content = open(path, 'rb').read()
        self.attach_related(filename, content, mimetype)
Attaches a file from the filesystem.
dataset/ETHPy150Open baskoopmans/djcommon/djcommon/email.py/EmailMultiRelated.attach_related_file