Universal types

The ASN.1 language defines a collection of core data types also known as universal types.

Some of these types behave like a scalar (e.g. simple types) while the rest are structured types (the standard calls them constructed).

Example of simple types include Integer or OctetString. Constructed types like Sequence embed other types, both simple and constructed.

class pyasn1.type.univ.NoValue

Create a singleton instance of NoValue class.

The NoValue sentinel object represents an instance of ASN.1 schema object as opposed to ASN.1 value object.

Only ASN.1 schema-related operations can be performed on ASN.1 schema objects.


Any operation attempted on the noValue object will raise the PyAsn1Error exception.