There is an important distinction between PyASN1 schema and value objects. The PyASN1 schema objects can only participate in ASN.1 schema-related operations (e.g. defining or testing the structure of the data). Most obvious uses of ASN.1 schema is to guide serialisation codecs whilst encoding/decoding serialised ASN.1 contents. The PyASN1 value objects can **additionally** participate in many operations involving regular Python objects (e.g. arithmetic, comprehension etc). FT)