dataset.py 文件源码

def _download(self):
        # download when file doesn't exist.
        path = os.path.join(self.path, self.name)
        if not os.path.isdir(path):
            # download a dataset.
            path = wget.download(self.url, self.path)
            # extract the dataset.
            with zipfile.ZipFile(path, 'r') as zip_file:
                zip_file.extractall(self._get_extract_path())
            # remove downloaded zip file.
            os.remove(path)