code: def get_current_ontology_date():
      
      with closing(requests.get(
              'http://geneontology.org/ontology/go-basic.obo',
              stream=True)) as r:
          for i, l in enumerate(r.iter_lines(decode_unicode=True)):
              if i == 1:
                  assert l.split(':')[0] == 'data-version'
                  date = l.split('/')[-1]
                  break
  
      return date
docs: Get the release date of the current Gene Ontolgo release.