PersistentBranchAndBoundConfig

(class from pyomo.contrib.solver.common.config)

class pyomo.contrib.solver.common.config.PersistentBranchAndBoundConfig(description=None, doc=None, implicit=False, implicit_domain=None, visibility=0)

Bases: PersistentSolverConfig, BranchAndBoundConfig

Base config for all persistent MIP solver interfaces

Options:

• tee (TextIO_or_Logger, default=False) – tee accepts bool, io.TextIOBase, or logging.Logger (or a list of these types). True is mapped to sys.stdout. The solver log will be printed to each of these streams / destinations.

• working_dir (Path, optional) – The directory in which generated files should be saved. This replaces the keepfiles option.

• load_solutions (Bool, default=True) – If True, the values of the primal variables will be loaded into the model.

• raise_exception_on_nonoptimal_result (Bool, default=True) – If False, the solve method will continue processing even if the returned result is nonoptimal.

• symbolic_solver_labels (Bool, default=False) – If True, the names given to the solver will reflect the names of the Pyomo components. Cannot be changed after set_instance is called.

• timer (optional) – A timer object for recording relevant process timing data.

• threads (NonNegativeInt, optional) – Number of threads to be used by a solver.

• time_limit (NonNegativeFloat, optional) – Time limit applied to the solver (in seconds).

• solver_options (dict, optional) – Options to pass to the solver.

• rel_gap (NonNegativeFloat, optional) – Optional termination condition; the relative value of the gap in relation to the best bound

• abs_gap (NonNegativeFloat, optional) – Optional termination condition; the absolute value of the difference between the incumbent and best bound

• auto_updates (AutoUpdateConfig, optional) – Configuration options to detect changes in model between solves

__init__(description=None, doc=None, implicit=False, implicit_domain=None, visibility=0)

Methods

__init__([description, doc, implicit, ...])
add(name, config, **kwargs)
clear()
declare(name, config)	Declare a new configuration item in the ConfigDict
declare_as_argument(*args, **kwds)	Map this Config item to an argparse argument.
declare_from(other[, skip])
display([content_filter, indent_spacing, ...])	Print the current Config value, in YAML format.
domain_name()
generate_documentation([block_start, ...])	Document the this Config object.
generate_yaml_template([indent_spacing, ...])	Document Config object, in YAML format.
get(k[,d])
import_argparse(parsed_args)	Import parsed arguments back into this Config object
initialize_argparse(parser)	Initialize an ArgumentParser with arguments from this Config object.
items()
iteritems()	DEPRECATED.
iterkeys()	DEPRECATED.
itervalues()	DEPRECATED.
keys()
name([fully_qualified])
pop(k[,d])	If key is not found, d is returned if given, otherwise KeyError is raised.
popitem()	as a 2-tuple; but raise KeyError if D is empty.
reset()
set_default_value(default)
set_domain(domain)
set_value(value[, skip_implicit])
setdefault(k[,d])
unused_user_values()
update([E, ]**F)	If E present and has a .keys() method, does: for k in E.keys(): D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v
user_values()
value([accessValue])
values()

Attributes

content_filters

Member Documentation

clear() → None.  Remove all items from D.

declare(name, config)

Declare a new configuration item in the ConfigDict

declare_as_argument(*args, **kwds)

Map this Config item to an argparse argument.

Valid arguments include all valid arguments to argparse.ArgumentParser.add_argument() with the exception of default.

In addition, you may provide a group keyword argument that can be:

• an argument group returned from ~argparse.ArgumentParser.add_argument_group

• a subparser returned from ~argparse.ArgumentParser.add_subparsers

• a string specifying the name of a subparser or argument group

• a tuple of strings specifying a (subparser, group)

display(content_filter=None, indent_spacing=2, ostream=None, visibility=None)

Print the current Config value, in YAML format.

The current values stored in this Config object are output to ostream (or sys.stdout if ostream is None). If visibility is not None, then only items with visibility less than or equal to visibility will be output. Output can be further filtered by providing a content_filter.

generate_documentation(block_start=None, block_end=None, item_start=None, item_body=None, item_end=None, indent_spacing: int = 2, width: int = 78, visibility: int | None = None, format: ConfigFormatter | str = 'latex')

Document the this Config object.

Generate documentation for this config object in the specified format. While it can be called on any class derived from ConfigBase, it is typically used for documenting ConfigDict instances.

Note that unlike display() and generate_yaml_template(), generate_documentation() does not document the current value of any ConfigList containers. Instead, it generates the documentation for the ConfigList domain.

If the format argument is a string, this method is equivalent to:

ConfigFormatter.formats[format]().generate(
    self, indent_spacing, width, visibility
)

Otherwise, if format is a ConfigFormatter instance, then this is simply:

format.generate(self, indent_spacing, width, visibility)

generate_yaml_template(indent_spacing=2, width=78, visibility=0)

Document Config object, in YAML format.

Output a description of this Config object. While similar to display(), this routine has two key differences:

• The description for each item is output as a comment.

• The result is returned as a string instead of being sent directly to an output stream

If visibility is not None, then only items with visibility less than or equal to visibility will be output.

get(k[, d]) → D[k] if k in D, else d.  d defaults to None.

import_argparse(parsed_args)

Import parsed arguments back into this Config object

initialize_argparse(parser)

Initialize an ArgumentParser with arguments from this Config object.

Translate items from this Config object that have been marked with declare_as_argument() into argparse arguments.

items() → a set-like object providing a view on D's items

iteritems()

DEPRECATED.

Deprecated since version 6.0: The iteritems method is deprecated. Use dict.keys().

iterkeys()

DEPRECATED.

Deprecated since version 6.0: The iterkeys method is deprecated. Use dict.keys().

itervalues()

DEPRECATED.

Deprecated since version 6.0: The itervalues method is deprecated. Use dict.keys().

keys() → a set-like object providing a view on D's keys

pop(k[, d]) → v, remove specified key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem() → (k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D

update([E, ]**F) → None.  Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E.keys(): D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → an object providing a view on D's values