KwRule¶

class jwst.model_blender.blendrules.KwRule(line)[source]¶

Bases: object

This class encapsulates the logic needed for interpreting a single keyword rule from a text file.

Notes

The .rules attribute contains the interpreted set of rules that corresponds to this line.

Example:

Interpreting rule from
{'meta.attribute': { 'rule': 'first', 'output': 'meta.attribute'}}
--or--
{'meta.attribute': 'meta.attribute'}  # Table column specification

into rule [('meta.attribute', 'meta.attribute', <function first at 0x7fe505db7668>, 'ignore')]
and sname None

Initialize new keyword rule.

Parameters:: line (dict) – Line should be dict with attribute name as the key, and a dict as the value specifying ‘rule’ and (optionally)’output’.

Methods Summary

interpret(hdr)

Use metadata to interpret rule.

Methods Documentation

interpret(hdr)[source]¶: Use metadata to interpret rule.