holoviews.core.tree module#

class holoviews.core.tree.AttrTree(items=None, identifier=None, parent=None, dir_mode='default')[source]#

Bases: object

An AttrTree offers convenient, multi-level attribute access for collections of objects. AttrTree objects may also be combined together using the update method or merge classmethod. Here is an example of adding a ViewableElement to an AttrTree and accessing it:

>>> t = AttrTree()
>>> t.Example.Path = 1
>>> t.Example.Path
1

Attributes:

fixed: If fixed, no new paths can be created via attribute access
path: Returns the path up to the root for the current node.
root

Methods

`filter`(path_filters)	Filters the loaded AttrTree using the supplied path_filters.
`get`(identifier[, default])	Get a node of the AttrTree using its path string.
`items`()	Keys and nodes of the AttrTree
`keys`()	Keys of nodes in the AttrTree
`merge`(trees)	Merge a collection of AttrTree objects.
`pop`(identifier[, default])	Pop a node of the AttrTree using its path string.
`set_path`(path, val)	Set the given value at the supplied path where path is either a tuple of strings or a string in A.B.C format.
`update`(other)	Updated the contents of the current AttrTree with the contents of a second AttrTree.
`values`()	Nodes of the AttrTree

filter(path_filters)[source]#: Filters the loaded AttrTree using the supplied path_filters.

property fixed#: If fixed, no new paths can be created via attribute access

get(identifier, default=None)[source]#

Get a node of the AttrTree using its path string.

Parameters:

identifier: Path string of the node to return
default: Value to return if no node is found

Returns:

The indexed node of the AttrTree

items()[source]#: Keys and nodes of the AttrTree

keys()[source]#: Keys of nodes in the AttrTree

classmethod merge(trees)[source]#: Merge a collection of AttrTree objects.

property path#: Returns the path up to the root for the current node.

pop(identifier, default=None)[source]#

Pop a node of the AttrTree using its path string.

Parameters:

identifier: Path string of the node to return
default: Value to return if no node is found

Returns:

The node that was removed from the AttrTree

set_path(path, val)[source]#: Set the given value at the supplied path where path is either a tuple of strings or a string in A.B.C format.

update(other)[source]#: Updated the contents of the current AttrTree with the contents of a second AttrTree.

values()[source]#: Nodes of the AttrTree