Utilities.py 文件源码

def url_composer(self, query, service):
        """
        This function is used to compose a url to call some web services, such as sparql endpoints.

        :param query: is the string used in some rest calls.
        :param service: type of service you request (dbpedia sparql endpoint)
        :return url: the url composed
        """
        # use quote_plus method from urllib to encode special character (must to do with web service)
        query = urllib.quote_plus(query)

        """
        The following if clause are differentiated by service requested Eg. 'dbpedia',..
            but in all the cases url is composed using pre formatted string along with the query
        """
        if service == 'dbpedia':
            url = self.dbpedia_sparql_url + query + self.call_format_sparql

        elif service == 'html':
            url = self.html_format + query

        else:
            url = "ERROR"
        return url