# etree.backend

[[[Source]]](https://github.com/google/etils/tree/main/etils/etree/backend.py)

```{eval-rst}
.. automodule:: etils.etree.backend
  :no-members:
```

## Symbols


### Class

|  |  |
--- | ---
[etree.backend.Backend](Backend) | Tree API backend.
[etree.backend.DmTree](DmTree) | `tree` backend.
[etree.backend.Jax](Jax) | `jax.tree_util` backend.
[etree.backend.Nest](Nest) | `tf.nest` backend.
[etree.backend.Optree](Optree) | `optree` backend.
[etree.backend.Python](Python) | Pure `Python` backend.

```{toctree}
:hidden:

Backend
DmTree
Jax
Nest
Optree
Python
```