Sparql - Unknown Namespace Prefix Error

I have a python file with imported rdflib and some SPARQL query implemented from rdflib import Graph import html5lib if __name__ == '__main__': g = Graph() g.parse('http:

Solution 1:

As the error message suggests, the namespace weather: is not defined - so in the SPARQL you either need a PREFIX to define weather, like:

PREFIX weather: <weatheruri>

Or you should put the explicit weather URI instead of the weather:

The weather namespace URI (or is it called an IRI?) will be in the XML namespaces in the rdf document - it will end with / or # so if the URI is http://weather.com/ the prefix definition is PREFIX weather: <http://weather.com/>