code: def _normalize_license(data):
      
      license = data.get('license', None)
      if not license:
          # try to get license from classifiers
          license = _license_from_classifiers(data)
      if license:
          if license in SDPX_LICENSES.keys():
              data['license'] = SDPX_LICENSES[license]
          else:
              data['license'] = "%s (FIXME:No SPDX)" % (license)
      else:
          data['license'] = ""
docs: try to get SDPX license