utils.py 文件源码

def sort_url_by_query_keys(url):
    """A helper function which sorts the keys of the query string of a url.

       For example, an input of '/v2/tasks?sort_key=id&sort_dir=asc&limit=10'
       returns '/v2/tasks?limit=10&sort_dir=asc&sort_key=id'. This is to
       prevent non-deterministic ordering of the query string causing
       problems with unit tests.
    :param url: url which will be ordered by query keys
    :returns url: url with ordered query keys
    """
    parsed = urlparse.urlparse(url)
    queries = urlparse.parse_qsl(parsed.query, True)
    sorted_query = sorted(queries, key=lambda x: x[0])

    encoded_sorted_query = urlparse.urlencode(sorted_query, True)

    url_parts = (parsed.scheme, parsed.netloc, parsed.path,
                 parsed.params, encoded_sorted_query,
                 parsed.fragment)

    return urlparse.urlunparse(url_parts)