jax.tree_util.register_pytree_node#
- jax.tree_util.register_pytree_node(nodetype, flatten_func, unflatten_func)[source]#
Extends the set of types that are considered internal nodes in pytrees.
See example usage.
- Parameters:
nodetype (type[T]) – a Python type to treat as an internal pytree node.
flatten_func (Callable[[T], tuple[_Children, _AuxData]]) – a function to be used during flattening, taking a value of type
nodetype
and returning a pair, with (1) an iterable for the children to be flattened recursively, and (2) some hashable auxiliary data to be stored in the treedef and to be passed to theunflatten_func
.unflatten_func (Callable[[_AuxData, _Children], T]) – a function taking two arguments: the auxiliary data that was returned by
flatten_func
and stored in the treedef, and the unflattened children. The function should return an instance ofnodetype
.