code: def ParseShadowEntry(self, line):
      
      fields = ("login", "passwd", "last_change", "min_age", "max_age",
                "warn_time", "inactivity", "expire", "reserved")
      if line:
        rslt = dict(zip(fields, line.split(":")))
        pw_entry = self.shadow.setdefault(rslt["login"], rdf_client.PwEntry())
        pw_entry.store = self.shadow_store
        pw_entry.hash_type = self.GetHashType(rslt["passwd"])
        # Tread carefully here in case these values aren't set.
        last_change = rslt.get("last_change")
        if last_change:
          pw_entry.age = int(last_change)
        max_age = rslt.get("max_age")
        if max_age:
          pw_entry.max_age = int(max_age)
docs: Extract the user accounts in /etc/shadow.
  
      Identifies the users in /etc/shadow and several attributes of their account,
      including how their password is crypted and password aging characteristics.
  
      Args:
        line: An entry of the shadow file.