DMSLevel2bBase

class jwst.associations.lib.rules_level2_base.DMSLevel2bBase(*args, **kwargs)

Bases: DMSBaseMixin, Association

Basic class for DMS Level2 associations.

Attributes Summary

INVALID_VALUES	Attribute values that indicate the attribute is not specified.
schema_file

Methods Summary

dms_product_name()	Define product name.
get_exposure_type(item[, default])	General Level 2 override of exposure type definition.
has_science()	Check association for a science member.
make_member(item)	Create a member from the item.
members_by_type(member_type)	Get list of members by their exposure type.
update_asn()	Update association info based on current members.
validate_candidates(_member)	Allow only OBSERVATION or BACKGROUND candidates.

Attributes Documentation

INVALID_VALUES: tuple | None = (None, '', 'NULL', 'Null', 'null', '--', 'N', 'n', 'F', 'f', 'FALSE', 'false', 'False', 'N/A', 'n/a')

Attribute values that indicate the attribute is not specified.

schema_file = PosixPath('/home/docs/checkouts/readthedocs.org/user_builds/jwst-pipeline/conda/10095/lib/python3.11/site-packages/jwst/associations/lib/asn_schema_jw_level2b.json')

Methods Documentation

dms_product_name()

Define product name.

Returns:

str

The product name.

get_exposure_type(item, default='science')

General Level 2 override of exposure type definition.

The exposure type definition is overridden from the default for the following cases:

• ‘psf’ -> ‘science’

Parameters:

itemdict

The pool entry to determine the exposure type of

defaultstr or None

The default exposure type. If None, routine will raise LookupError.

Returns:

exposure_typestr

Always what is defined as default

has_science()

Check association for a science member.

Returns:

bool

True if it does.

make_member(item)

Create a member from the item.

Parameters:

itemdict

The item to create member from.

Returns:

memberMember

The member

members_by_type(member_type)

Get list of members by their exposure type.

Returns:

list of str

List of members.

update_asn()

Update association info based on current members.

validate_candidates(_member)

Allow only OBSERVATION or BACKGROUND candidates.

Parameters:

_memberMember

Member being added; ignored.

Returns:

bool

True if candidate is OBSERVATION, BACKGROUND and at least one member is background; otherwise false.