def _validate_download_options(self):
        if not self.args.download:
            if self.args.download_resume:
                self.error('--continue only works with --download')
        if self.args.download_resume and not (
                self.args.download or self.args.output_file):
            self.error('--continue requires --output to be specified')
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/httpie/input.py/Parser._validate_download_options/operator `and` -> `or`