noisify.attribute_readers package

noisify.attribute_readers.attribute_readers module

Attribute Readers allow faults to be directed to specific attributes of an input object. These do not need to be literal attributes, they can be values in a dictionary or columns in a database for example, as long as they can be accessed via a key.

class noisify.attribute_readers.attribute_readers.AttributeReader(attribute_identifier, faults=None)

Bases: noisify.helpers.fallible.Fallible

The AttributeReader interface describes a mechanism to read and write values from an object

get_value(truth_object)

(Part of the interface) Must return the ground truth for the given attribute of the original object

measure(truth_object)

Takes a ‘measurement’ of the ground truth, applying all faults in the process

update_value(output_object, new_value)

(Part of the interface) Must update the new output object at the given attribute key with a new value

class noisify.attribute_readers.attribute_readers.DictValue(attribute_identifier, faults=None)

Bases: noisify.attribute_readers.attribute_readers.AttributeReader

Provides support for dictionary value lookups as attributes.

get_value(truth_object)

Queries the truth object using a dictionary lookup

update_value(output_object, new_value)

Sets using dictionary value assignment

class noisify.attribute_readers.attribute_readers.ObjectAttribute(attribute_identifier, faults=None)

Bases: noisify.attribute_readers.attribute_readers.AttributeReader

Provides support for literal object attributes as attributes.

get_value(truth_object)

Queries using getattr

update_value(output_object, new_value)

Sets using setattr

noisify.attribute_readers.inspection_strategies module

Inspection strategies are used by reporters to create attribute_readers for given objects when none are specified.

noisify.attribute_readers.inspection_strategies.dictionary_lookup(unknown_dictionary, attribute_faults=None)

Generates attribute_readers for each key/value pair of a given dictionary, enables reporters to map faults across dictionaries without further specification.

noisify.attribute_readers.inspection_strategies.object_attributes_lookup(unknown_object, attribute_faults=None)

Generates attribute_readers for each attribute of a given object, enables reporters to map faults across objects without further specification. Ignores methods and private attributes marked with ‘_’.