code: def lookup_casstype_simple(casstype):
      
      shortname = trim_if_startswith(casstype, apache_cassandra_type_prefix)
      try:
          typeclass = _casstypes[shortname]
      except KeyError:
          typeclass = mkUnrecognizedType(casstype)
      return typeclass
docs: Given a Cassandra type name (either fully distinguished or not), hand
      back the CassandraType class responsible for it. If a name is not
      recognized, a custom _UnrecognizedType subclass will be created for it.
  
      This function does not handle complex types (so no type parameters--
      nothing with parentheses). Use lookup_casstype() instead if you might need
      that.