[OWSLib-users] CatalogueServiceWeb and data.gov exception

[Davide Muraro]

Thanks  James!


from owslib.csw import CatalogueServiceWeb

from owslib.fes import PropertyIsEqualTo, PropertyIsLike, BBox


csw = CatalogueServiceWeb('https://catalog.data.gov/csw')

query = PropertyIsEqualTo('csw:AnyText', 'Africa')

csw.getrecords2(constraints=[query], maxrecords=20)

print(csw.records)

it works like a charm.

Davide

________________________________
Da: Passmore, James H. <jpass at bgs.ac.uk>
Inviato: venerdì 2 giugno 2017 10.48
A: Davide Muraro; owslib-users at lists.osgeo.org
Oggetto: RE: CatalogueServiceWeb and data.gov exception


The line



csw = CatalogueServiceWeb('http://catalog.data.gov/csw?service=CSW&version=2.0.2&request=GetCapabilities')



should be:



csw = CatalogueServiceWeb('http://catalog.data.gov/csw')



or (as you’re getting redirected to an https service):



csw = CatalogueServiceWeb('https://catalog.data.gov/csw')



If I use (Python 3.6):



from owslib import csw as csw

c = csw.CatalogueServiceWeb('https://catalog.data.gov/csw')
c.getrecords2(maxrecords=20)
print(c.records)



I get a result (eventually ~ the service seems quite slow).



I’ve tried running a query but it seems to be taking forever to return



James



From: OWSLib-users [mailto:owslib-users-bounces at lists.osgeo.org] On Behalf Of Davide Muraro
Sent: 01 June 2017 12:44
To: owslib-users at lists.osgeo.org
Subject: [OWSLib-users] CatalogueServiceWeb and data.gov exception



Dear All,



I was doing some tests using CatalogueServiceWeb and the data.gov CSW.



Basically doing something like:



from owslib.csw import CatalogueServiceWeb

from owslib.fes import PropertyIsEqualTo, PropertyIsLike, BBox

csw = CatalogueServiceWeb('http://catalog.data.gov/csw?service=CSW&version=2.0.2&request=GetCapabilities')

query = PropertyIsEqualTo('csw:AnyText', 'map')

csw.getrecords2(constraints=[query], maxrecords=20)

print(csw.records)



i got:



*python3.5/site-packages/owslib/csw.py in getrecords2(self, constraints, sortby, typenames, esn, outputschema, format, startposition, maxrecords, cql, xml, resulttype)

    380

    381             # process search results attributes

--> 382             val = self._exml.find(util.nspath_eval('csw:SearchResults', namespaces)).attrib.get('numberOfRecordsMatched')

    383             self.results['matches'] = int(util.testXMLValue(val, True))

    384             val = self._exml.find(util.nspath_eval('csw:SearchResults', namespaces)).attrib.get('numberOfRecordsReturned')



AttributeError: 'NoneType' object has no attribute 'attrib'





Ideas?



D





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