code: def Search(self, artifact, os_name=None, cpe=None, label=None):
      
      hit = lambda x: x[0] == x[1] or not x[0]
      seq = [(artifact, self.artifact), (os_name, self.os_name), (cpe, self.cpe),
             (label, self.label)]
      return all(map(hit, seq))
docs: Whether the condition contains the specified values.
  
      Args:
        artifact: A string identifier for the artifact.
        os_name: An OS string.
        cpe: A CPE string.
        label: A label string.
  
      Returns:
        True if the values match the non-empty query attributes.
        Empty query attributes are ignored in the comparison.