

def process_bind_param(self, value, dialect):
    if (not value):
        return None
    if (not isinstance(value, self._upload_type)):
        raise ValueError(('AttachmentField requires %s, got %s instead' % (self._upload_type, type(value))))
    return value.encode()

dataset/ETHPy150Open amol-/depot/depot/fields/sqlalchemy.py UploadedFileField.process_bind_param/original