mixins.py 文件源码

def get_attachments(self):
        attachments = super().get_attachments()
        filename = (
            finders.find('images/email_logo.png')
            or finders.find('images/email_logo.svg')
        )
        if filename:
            if filename.endswith('.png'):
                imagetype = 'png'
            else:
                imagetype = 'svg+xml'

            with open(filename, 'rb') as f:
                logo = MIMEImage(f.read(), imagetype)

            logo.add_header('Content-ID', '<{}>'.format('logo'))
            return attachments + [logo]
        return attachments