lsst.pipe.tasks.configurableActions._configurableActionField.ConfigurableActionField Class Reference

Inheritance diagram for lsst.pipe.tasks.configurableActions._configurableActionField.ConfigurableActionField:

Public Member Functions
def	__set__ (self, instance, value, at=None, label="assignment")
def	__init__ (self, doc, dtype=ConfigurableAction, default=None, check=None, deprecated=None)
def	__get__ (self, instance, owner=None)
def	__get__ (self, instance, owner=None, at=None, label="default")
def	rename (self, instance)
def	save (self, outfile, instance)
def	freeze (self, instance)
def	toDict (self, instance)
def	validate (self, instance)
def	__delete__ (self, instance, at=None, label='deletion')

Public Attributes
	dtype
	doc
	deprecated
	default
	check
	optional
	source

Static Public Attributes
	supportedTypes = set((str, bool, float, int, complex))

Detailed Description

`ConfigurableActionField` is a subclass of `~lsst.pex.config.Field` that
allows a single `ConfigurableAction` (or a subclass of thus) to be
assigned to it. The `ConfigurableAction` is then accessed through this
field for further configuration.

Any configuration that is done prior to reasignment to a new
`ConfigurableAction` is forgotten.

Definition at line 32 of file _configurableActionField.py.

Constructor & Destructor Documentation

__init__()

def lsst.pipe.tasks.configurableActions._configurableActionField.ConfigurableActionField.__init__	(		self,
			doc,
			dtype = ConfigurableAction,
			default = None,
			check = None,
			deprecated = None
	)

Reimplemented from lsst.pex.config.configField.ConfigField.

Definition at line 66 of file _configurableActionField.py.

    def __init__(self, doc, dtype=ConfigurableAction, default=None, check=None, deprecated=None):
        if not issubclass(dtype, ConfigurableAction):
            raise ValueError("dtype must be a subclass of ConfigurableAction")
        super().__init__(doc=doc, dtype=dtype, default=default, check=check, deprecated=deprecated)

Member Function Documentation

__delete__()

def lsst.pex.config.config.Field.__delete__ (   self,   instance,   at = None,   label = 'deletion'  )

inherited

Delete an attribute from a `lsst.pex.config.Config` instance.

Parameters
----------
instance : `lsst.pex.config.Config`
    The config instance that contains this field.
at : `list` of `lsst.pex.config.callStack.StackFrame`
    The call stack (created by
    `lsst.pex.config.callStack.getCallStack`).
label : `str`, optional
    Event label for the history.

Notes
-----
This is invoked by the owning `~lsst.pex.config.Config` object and
should not be called directly.

Definition at line 634 of file config.py.

    def __delete__(self, instance, at=None, label='deletion'):
        """Delete an attribute from a `lsst.pex.config.Config` instance.
 
        Parameters
        ----------
        instance : `lsst.pex.config.Config`
            The config instance that contains this field.
        at : `list` of `lsst.pex.config.callStack.StackFrame`
            The call stack (created by
            `lsst.pex.config.callStack.getCallStack`).
        label : `str`, optional
            Event label for the history.
 
        Notes
        -----
        This is invoked by the owning `~lsst.pex.config.Config` object and
        should not be called directly.
        """
        if at is None:
            at = getCallStack()
        self.__set__(instance, None, at=at, label=label)
 

__get__() [1/2]

def lsst.pex.config.configField.ConfigField.__get__ (   self,   instance,   owner = None  )

inherited

Definition at line 91 of file configField.py.

    def __get__(self, instance, owner=None):
        if instance is None or not isinstance(instance, Config):
            return self
        else:
            value = instance._storage.get(self.name, None)
            if value is None:
                at = getCallStack()
                at.insert(0, self.source)
                self.__set__(instance, self.default, at=at, label="default")
            return value
 

__get__() [2/2]

def lsst.pex.config.config.Field.__get__ (   self,   instance,   owner = None,   at = None,   label = "default"  )

inherited

Define how attribute access should occur on the Config instance
This is invoked by the owning config object and should not be called
directly

When the field attribute is accessed on a Config class object, it
returns the field object itself in order to allow inspection of
Config classes.

When the field attribute is access on a config instance, the actual
value described by the field (and held by the Config instance) is
returned.

Reimplemented in lsst.pex.config.configurableField.ConfigurableField.

Definition at line 550 of file config.py.

    def __get__(self, instance, owner=None, at=None, label="default"):
        """Define how attribute access should occur on the Config instance
        This is invoked by the owning config object and should not be called
        directly
 
        When the field attribute is accessed on a Config class object, it
        returns the field object itself in order to allow inspection of
        Config classes.
 
        When the field attribute is access on a config instance, the actual
        value described by the field (and held by the Config instance) is
        returned.
        """
        if instance is None:
            return self
        else:
            # try statements are almost free in python if they succeed
            try:
                return instance._storage[self.name]
            except AttributeError:
                if not isinstance(instance, Config):
                    return self
                else:
                    raise AttributeError(f"Config {instance} is missing "
                                         "_storage attribute, likely"
                                         " incorrectly initialized")
 

__set__()

def lsst.pipe.tasks.configurableActions._configurableActionField.ConfigurableActionField.__set__	(		self,
			instance,
			value,
			at = None,
			label = "assignment"
	)

Set an attribute on the config instance.

Parameters
----------
instance : `lsst.pex.config.Config`
    The config instance that contains this field.
value : obj
    Value to set on this field.
at : `list` of `lsst.pex.config.callStack.StackFrame`
    The call stack (created by
    `lsst.pex.config.callStack.getCallStack`).
label : `str`, optional
    Event label for the history.

Notes
-----
This method is invoked by the owning `lsst.pex.config.Config` object
and should not be called directly.

Derived `~lsst.pex.config.Field` classes may need to override the
behavior. When overriding ``__set__``, `~lsst.pex.config.Field` authors
should follow the following rules:

- Do not allow modification of frozen configs.
- Validate the new value **before** modifying the field. Except if the
  new value is `None`. `None` is special and no attempt should be made
  to validate it until `lsst.pex.config.Config.validate` is called.
- Do not modify the `~lsst.pex.config.Config` instance to contain
  invalid values.
- If the field is modified, update the history of the
  `lsst.pex.config.field.Field` to reflect the changes.

In order to decrease the need to implement this method in derived
`~lsst.pex.config.Field` types, value validation is performed in the
`lsst.pex.config.Field._validateValue`. If only the validation step
differs in the derived `~lsst.pex.config.Field`, it is simpler to
implement `lsst.pex.config.Field._validateValue` than to reimplement
``__set__``. More complicated behavior, however, may require
reimplementation.

Reimplemented from lsst.pex.config.configField.ConfigField.

Definition at line 45 of file _configurableActionField.py.

    def __set__(self, instance, value, at=None, label="assignment"):
        if instance._frozen:
            raise FieldValidationError(self, instance,
                                       "Cannot modify a frozen Config")
        name = _joinNamePath(prefix=instance._name, name=self.name)
 
        if not isinstance(value, self.dtype) and not issubclass(value, self.dtype):
            msg = f"Value {value} is of incorrect type {_typeStr(value)}. Expected {_typeStr(self.dtype)}"
            raise FieldValidationError(self, instance, msg)
 
        if at is None:
            at = getCallStack()
 
        if isinstance(value, self.dtype):
            instance._storage[self.name] = type(value)(__name=name, __at=at,
                                                       __label=label, **value._storage)
        else:
            instance._storage[self.name] = value(__name=name, __at=at, __label=label)
        history = instance._history.setdefault(self.name, [])
        history.append(("config value set", at, label))
 

freeze()

def lsst.pex.config.configField.ConfigField.freeze (   self,   instance  )

inherited

Make this field read-only.

Parameters
----------
instance : `lsst.pex.config.Config`
    The config instance that contains this field.

Notes
-----
Freezing is only relevant for fields that hold subconfigs. Fields which
hold subconfigs should freeze each subconfig.

**Subclasses should implement this method.**

Reimplemented from lsst.pex.config.config.Field.

Definition at line 181 of file configField.py.

    def freeze(self, instance):
        """Make this field read-only.
 
        Parameters
        ----------
        instance : `lsst.pex.config.Config`
            The config instance that contains this field.
 
        Notes
        -----
        Freezing is only relevant for fields that hold subconfigs. Fields which
        hold subconfigs should freeze each subconfig.
 
        **Subclasses should implement this method.**
        """
        value = self.__get__(instance)
        value.freeze()
 

rename()

def lsst.pex.config.configField.ConfigField.rename (   self,   instance  )

inherited

Rename the field in a `~lsst.pex.config.Config` (for internal use
only).

Parameters
----------
instance : `lsst.pex.config.Config`
    The config instance that contains this field.

Notes
-----
This method is invoked by the `lsst.pex.config.Config` object that
contains this field and should not be called directly.

Renaming is only relevant for `~lsst.pex.config.Field` instances that
hold subconfigs. `~lsst.pex.config.Fields` that hold subconfigs should
rename each subconfig with the full field name as generated by
`lsst.pex.config.config._joinNamePath`.

Reimplemented from lsst.pex.config.config.Field.

Definition at line 130 of file configField.py.

    def rename(self, instance):
        """Rename the field in a `~lsst.pex.config.Config` (for internal use
        only).
 
        Parameters
        ----------
        instance : `lsst.pex.config.Config`
            The config instance that contains this field.
 
        Notes
        -----
        This method is invoked by the `lsst.pex.config.Config` object that
        contains this field and should not be called directly.
 
        Renaming is only relevant for `~lsst.pex.config.Field` instances that
        hold subconfigs. `~lsst.pex.config.Fields` that hold subconfigs should
        rename each subconfig with the full field name as generated by
        `lsst.pex.config.config._joinNamePath`.
        """
        value = self.__get__(instance)
        value._rename(_joinNamePath(instance._name, self.name))
 

save()

def lsst.pex.config.configField.ConfigField.save (   self,   outfile,   instance  )

inherited

Save this field to a file (for internal use only).

Parameters
----------
outfile : file-like object
    A writeable field handle.
instance : `Config`
    The `Config` instance that contains this field.

Notes
-----
This method is invoked by the `~lsst.pex.config.Config` object that
contains this field and should not be called directly.

The output consists of the documentation string
(`lsst.pex.config.Field.doc`) formatted as a Python comment. The second
line is formatted as an assignment: ``{fullname}={value}``.

This output can be executed with Python.

Reimplemented from lsst.pex.config.config.Field.

Definition at line 157 of file configField.py.

    def save(self, outfile, instance):
        """Save this field to a file (for internal use only).
 
        Parameters
        ----------
        outfile : file-like object
            A writeable field handle.
        instance : `Config`
            The `Config` instance that contains this field.
 
        Notes
        -----
        This method is invoked by the `~lsst.pex.config.Config` object that
        contains this field and should not be called directly.
 
        The output consists of the documentation string
        (`lsst.pex.config.Field.doc`) formatted as a Python comment. The second
        line is formatted as an assignment: ``{fullname}={value}``.
 
        This output can be executed with Python.
        """
        value = self.__get__(instance)
        value._save(outfile)
 

toDict()

def lsst.pex.config.configField.ConfigField.toDict (   self,   instance  )

inherited

Convert the field value so that it can be set as the value of an
item in a `dict` (for internal use only).

Parameters
----------
instance : `Config`
    The `Config` that contains this field.

Returns
-------
value : object
    The field's value. See *Notes*.

Notes
-----
This method invoked by the owning `~lsst.pex.config.Config` object and
should not be called directly.

Simple values are passed through. Complex data structures must be
manipulated. For example, a `~lsst.pex.config.Field` holding a
subconfig should, instead of the subconfig object, return a `dict`
where the keys are the field names in the subconfig, and the values are
the field values in the subconfig.

Reimplemented from lsst.pex.config.config.Field.

Definition at line 199 of file configField.py.

    def toDict(self, instance):
        """Convert the field value so that it can be set as the value of an
        item in a `dict` (for internal use only).
 
        Parameters
        ----------
        instance : `Config`
            The `Config` that contains this field.
 
        Returns
        -------
        value : object
            The field's value. See *Notes*.
 
        Notes
        -----
        This method invoked by the owning `~lsst.pex.config.Config` object and
        should not be called directly.
 
        Simple values are passed through. Complex data structures must be
        manipulated. For example, a `~lsst.pex.config.Field` holding a
        subconfig should, instead of the subconfig object, return a `dict`
        where the keys are the field names in the subconfig, and the values are
        the field values in the subconfig.
        """
        value = self.__get__(instance)
        return value.toDict()
 

validate()

def lsst.pex.config.configField.ConfigField.validate (   self,   instance  )

inherited

Validate the field (for internal use only).

Parameters
----------
instance : `lsst.pex.config.Config`
    The config instance that contains this field.

Raises
------
lsst.pex.config.FieldValidationError
    Raised if verification fails.

Notes
-----
This method provides basic validation:

- Ensures that the value is not `None` if the field is not optional.
- Ensures type correctness.
- Ensures that the user-provided ``check`` function is valid.

Most `~lsst.pex.config.Field` subclasses should call
`lsst.pex.config.field.Field.validate` if they re-implement
`~lsst.pex.config.field.Field.validate`.

Reimplemented from lsst.pex.config.config.Field.

Definition at line 227 of file configField.py.

    def validate(self, instance):
        """Validate the field (for internal use only).
 
        Parameters
        ----------
        instance : `lsst.pex.config.Config`
            The config instance that contains this field.
 
        Raises
        ------
        lsst.pex.config.FieldValidationError
            Raised if verification fails.
 
        Notes
        -----
        This method provides basic validation:
 
        - Ensures that the value is not `None` if the field is not optional.
        - Ensures type correctness.
        - Ensures that the user-provided ``check`` function is valid.
 
        Most `~lsst.pex.config.Field` subclasses should call
        `lsst.pex.config.field.Field.validate` if they re-implement
        `~lsst.pex.config.field.Field.validate`.
        """
        value = self.__get__(instance)
        value.validate()
 
        if self.check is not None and not self.check(value):
            msg = "%s is not a valid value" % str(value)
            raise FieldValidationError(self, instance, msg)
 

Member Data Documentation

check

lsst.pex.config.config.Field.check

inherited

Definition at line 363 of file config.py.

default

lsst.pex.config.config.Field.default

inherited

Definition at line 359 of file config.py.

deprecated

lsst.pex.config.config.Field.deprecated

inherited

Definition at line 350 of file config.py.

doc

lsst.pex.config.config.Field.doc

inherited

Definition at line 346 of file config.py.

dtype

lsst.pex.config.config.Field.dtype

inherited

Definition at line 339 of file config.py.

optional

lsst.pex.config.config.Field.optional

inherited

Definition at line 367 of file config.py.

source

lsst.pex.config.config.Field.source

inherited

Definition at line 374 of file config.py.

supportedTypes

lsst.pex.config.config.Field.supportedTypes = set((str, bool, float, int, complex))

staticinherited

Definition at line 324 of file config.py.

---

The documentation for this class was generated from the following file:

• /j/snowflake/release/lsstsw/stack/lsst-scipipe-0.7.0/Linux64/pipe_tasks/21.0.0-172-gfb10e10a+18fedfabac/python/lsst/pipe/tasks/configurableActions/_configurableActionField.py