quandl.py 文件源码

def _format_metadata_url(self, api_key, page_number):
        """Build the query RL for the quandl WIKI metadata.
        """
        query_params = [
            ('per_page', '100'),
            ('sort_by', 'id'),
            ('page', str(page_number)),
            ('database_code', 'WIKI'),
        ]
        if api_key is not None:
            query_params = [('api_key', api_key)] + query_params

        return (
            'https://www.quandl.com/api/v3/datasets.csv?'
            + urlencode(query_params)
        )