ModuleDict#

classtorch.nn.ModuleDict(modules=None)[source]#

Holds submodules in a dictionary.

ModuleDict can be indexed like a regular Python dictionary,but modules it contains are properly registered, and will be visible by allModule methods.

ModuleDict is anordered dictionary that respects

• the order of insertion, and

• inupdate(), the order of the mergedOrderedDict,dict (started from Python 3.6) or anotherModuleDict (the argument toupdate()).

Note thatupdate() with other unordered mappingtypes (e.g., Python’s plaindict before Python version 3.6) does notpreserve the order of the merged mapping.

Parameters

modules (iterable,optional) – a mapping (dictionary) of (string: module)or an iterable of key-value pairs of type (string, module)

Example:

classMyModule(nn.Module):def__init__(self)->None:super().__init__()self.choices=nn.ModuleDict({"conv":nn.Conv2d(10,10,3),"pool":nn.MaxPool2d(3)})self.activations=nn.ModuleDict([["lrelu",nn.LeakyReLU()],["prelu",nn.PReLU()]])defforward(self,x,choice,act):x=self.choices[choice](x)x=self.activations[act](x)returnx

clear()[source]#

Remove all items from the ModuleDict.

items()[source]#

Return an iterable of the ModuleDict key/value pairs.

Return type

ItemsView[str,Module]

keys()[source]#

Return an iterable of the ModuleDict keys.

Return type

KeysView[str]

pop(key)[source]#

Remove key from the ModuleDict and return its module.

Parameters

key (str) – key to pop from the ModuleDict

Return type

Module

update(modules)[source]#

Update theModuleDict with key-value pairs from a mapping, overwriting existing keys.

Note

Ifmodules is anOrderedDict, aModuleDict, oran iterable of key-value pairs, the order of new elements in it is preserved.

Parameters

modules (iterable) – a mapping (dictionary) from string toModule,or an iterable of key-value pairs of type (string,Module)

values()[source]#

Return an iterable of the ModuleDict values.

Return type

ValuesView[Module]