add thesaurus handling to ISO import

[tomkralidis]

Fixes #225

[pvgenuchten]

tom, had to change to to get it working (init.py#L120):

(code expected an object but got dict)

finally the theasurus was not loaded for https://nationaalgeoregister.nl/geonetwork/srv/metadata/208bc283-7c66-4ce7-8ad3-1cf3e8933fb5/formatters/xml, i wonder if this is on owslib side, when adding print(value['thesaurus']), the title in all cases is empty, but for example the date is populated (issue is probably related to geopython/OWSLib#735, use of Anchor vs CharacterString).

if identification.keywords:
            mcf['identification']['keywords'] = {}
            for count, value in enumerate(identification.keywords):
                key = f'keywords-{count}'
                mcf['identification']['keywords'][key] = {
                    'keywords_type': value.get('type',''),
                    'keywords': [k for k in value.get('keywords',[])]
                }
                if value.get('thesaurus') is not None:
                    mcf['identification']['keywords'][key]['vocabulary'] = {
                        'name': value.get('thesaurus').get('title',''),
                        'url': value.get('thesaurus').get('url','')
                    }

actually with this code it works (almost fine)

        if identification.keywords2:
            mcf['identification']['keywords'] = {}
            for count, value in enumerate(identification.keywords2):
                key = f'keywords-{count}'
                mcf['identification']['keywords'][key] = {
                    'keywords_type': value.type,
                    'keywords': [k for k in value.keywords]
                }
                if value.thesaurus is not None:
                    print(value.thesaurus)
                    mcf['identification']['keywords'][key]['vocabulary'] = {
                        'name': value.thesaurus['title'],
                        'url': value.thesaurus['url']
                    }

[tomkralidis]

What version of OWSLib are you using (worksforme with 0.29.1)?

[pvgenuchten]

Problem seems on my side, code looks good Tom