TaskFactory¶
-
class
lsst.pipe.base.
TaskFactory
¶ Bases:
object
Abstract base class for task factory.
Task factory is responsible for creating instances of PipelineTask subclasses.
Methods Summary
makeTask
(taskClass, config, overrides, butler)Create new PipelineTask instance from its class. Methods Documentation
-
makeTask
(taskClass, config, overrides, butler)¶ Create new PipelineTask instance from its class.
Parameters: - taskClass :
type
PipelineTask
sub-class.- config :
pex.Config
orNone
Configuration object, if
None
then use task-defined configuration class (taskClass.ConfigClass
) to create new instance.- overrides :
ConfigOverrides
orNone
Configuration overrides, this should contain all overrides to be applied to a default task config, including instrument-specific, obs-package specific, and possibly command-line overrides. This parameter is exclusive with
config
, only one of the two can be specified as not-None
.- butler :
Butler
or None Butler instance used to obtain initialization inputs for PipelineTasks. If
None
, some PipelineTasks will not be usable
Returns: - task :
PipelineTask
Instance of a
PipelineTask
class orNone
on errors.
Raises: - Any exceptions that are raised by PipelineTask constructor or its
- configuration class are propagated back to caller.
- taskClass :
-