ExitNodeDispatcher

(class from pyomo.repn.util)

class pyomo.repn.util.ExitNodeDispatcher(*args, **kwargs)

Bases: defaultdict

Dispatcher for handling the StreamBasedExpressionVisitor exitNode callback

This dispatcher implements a specialization of defaultdict that supports automatic type registration. As the identified callback is added to the dict, no type will incur the overhead of register_dispatcher more than once.

Note that in this case, the client is expected to register all non-NPV expression types. The auto-registration is designed to only handle two cases: - Auto-detection of user-defined Named Expression types - Automatic mappimg of NPV expressions to their equivalent non-NPV handlers - Automatic registration of derived expression types

__init__(*args, **kwargs)

Methods

__init__(*args, **kwargs)
clear()	Remove all items from the dict.
copy()
fromkeys(iterable[, value])	Create a new dictionary with keys from iterable and values set to value.
get(key[, default])	Return the value for key if key is in the dictionary, else default.
items()	Return a set-like object providing a view on the dict's items.
keys()	Return a set-like object providing a view on the dict's keys.
pop(k[,d])	If the key is not found, return the default if given; otherwise, raise a KeyError.
popitem()	Remove and return a (key, value) pair as a 2-tuple.
setdefault(key[, default])	Insert key with a value of default if key is not in the dictionary.
unexpected_expression_type(visitor, node, *args)
update([E, ]**F)	If E is present and has a .keys() method, then does: for k in E.keys(): D[k] = E[k] If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v In either case, this is followed by: for k in F: D[k] = F[k]
values()	Return an object providing a view on the dict's values.

Attributes

default_factory

Factory for default value called by __missing__().

Member Documentation

clear()

Remove all items from the dict.

copy() → a shallow copy of D.

classmethod fromkeys(iterable, value=None, /)

Create a new dictionary with keys from iterable and values set to value.

get(key, default=None, /)

Return the value for key if key is in the dictionary, else default.

items()

Return a set-like object providing a view on the dict’s items.

keys()

Return a set-like object providing a view on the dict’s keys.

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

If the key is not found, return the default if given; otherwise, raise a KeyError.

popitem()

Remove and return a (key, value) pair as a 2-tuple.

Pairs are returned in LIFO (last-in, first-out) order. Raises KeyError if the dict is empty.

setdefault(key, default=None, /)

Insert key with a value of default if key is not in the dictionary.

Return the value for key if key is in the dictionary, else default.

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

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

values()

Return an object providing a view on the dict’s values.

default_factory

Factory for default value called by __missing__().