lsst.pipe.base

The lsst.pipe.base module provides base classes for the task framework. Tasks package the algorithmic units of the LSST Science Pipelines. You can create, configure, and run tasks with their Python APIs. Some tasks, called command-line tasks, are also packaged into data processing pipelines that you can run from the command line.

Overview

• Overview of the task framework

Using command-line tasks

• Using Butler data repositories and reruns with command-line tasks
• Specifying data IDs with command-line tasks
• Configuring command-line tasks
• Retargeting subtasks of command-line tasks
• Working with provenance checks in command-line tasks
• Logging with command-line tasks
• Parallel processing with command-line tasks
• Command-line task argument reference

Developing tasks and command-line tasks

• Creating a task
• Creating a command-line task

Python API reference

lsst.pipe.base Package

Functions

logInfo(obj, prefix[, logLevel])	Log timer information to obj.metadata and obj.log.
timeMethod(func)	Decorator to measure duration of a task method.

Classes

ArgumentParser(name[, usage])	Argument parser for command-line tasks that is based on argparse.ArgumentParser.
ButlerInitializedTaskRunner(TaskClass, parsedCmd)	A TaskRunner for CmdLineTasks that require a butler keyword argument to be passed to their constructor.
CmdLineTask([config, name, parentTask, log])	Base class for command-line tasks: tasks that may be executed from the command-line.
ConfigDatasetType(name)	Dataset type specified by a config parameter.
ConfigFileAction(option_strings, dest[, ...])	argparse action to load config overrides from one or more files.
ConfigValueAction(option_strings, dest[, ...])	argparse action callback to override config parameters using name=value pairs from the command-line.
DataIdContainer([level])	Container for data IDs and associated data references.
DatasetArgument([name, help, default])	Dataset type specified by a command-line argument.
InputOnlyArgumentParser(name[, usage])	ArgumentParser for command-line tasks that don’t write any output.
Struct(**keyArgs)	A container to which you can add fields as attributes.
Task([config, name, parentTask, log])	Base class for data processing tasks.
TaskError	Use to report errors for which a traceback is not useful.
TaskRunner(TaskClass, parsedCmd[, ...])	Run a command-line task, using multiprocessing if requested.

Class Inheritance Diagram