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.. _type.namedval:
Enumerating numbers
-------------------
Some ASN.1 types such as :ref:`Integer <univ.Integer>`,
:ref:`Enumerated <univ.Enumerated>` and :ref:`BitString <univ.BitString>`
may enumerate their otherwise numeric values associating them with
human-friendly labels.
.. code-block:: python
class ErrorStatus(Integer):
"""
ASN.1 specification:
error-status
INTEGER {
noError(0),
tooBig(1),
noSuchName(2),
...
}
"""
namedValues = NamedValues(
('noError', 0), ('tooBig', 1), ('noSuchName', 2)
)
The enumerated types behave exactly like the non-enumerated ones but,
additionally, values can be referred by labels.
.. code-block:: python
errorStatus = ErrorStatus('tooBig')
assert errorStatus == 1
.. toctree::
:maxdepth: 2
/pyasn1/type/namedval/namedval
|
