alias chex.PRNGKey to jax.Array

Starting with jax v0.4.16 and going forward, `jax.Array` is the correct type annotation for both new-style and old-style PRNG keys in JAX (see [JEP 9263](google/jax#17297) for details) Note that `jax.random.KeyArray` has been aliased to `Any` under TYPE_CHECKING, and so this change will make existing annotations far more strict than they were previously. PiperOrigin-RevId: 566933252
google-deepmind · Sep 20, 2023 · 902031d · 902031d
1 parent 533aeeb
commit 902031d
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diff --git a/chex/_src/pytypes.py b/chex/_src/pytypes.py
@@ -51,7 +51,7 @@
 Scalar = Union[float, int]
 Numeric = Union[Array, Scalar]
 Shape = jax.core.Shape
-PRNGKey = Union[jax.random.KeyArray, jax.Array]
+PRNGKey = jax.Array
 PyTreeDef = jax.tree_util.PyTreeDef
 Device = jax.Device
 ArrayDType = type(jnp.float32)
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
@@ -1,6 +1,6 @@
 absl-py>=0.9.0
 typing_extensions>=4.2.0
-jax>=0.4.6
+jax>=0.4.16
 jaxlib>=0.1.37
 numpy>=1.24.1
 toolz>=0.9.0