Error with http://Crans-Montana Tourisme

exception = HTTPConnectionPool(host='crans-montana%20tourisme%20', port=80): Max retries exceeded with url: / (Caused by NameResolutionError("HTTPConnection(host='crans-montana%20tourisme%20', port=80): Failed to resolve 'crans-montana%20tourisme%20' ([Errno -2] Name or service not known)"))