pyrefly-shape-extensions

Runtime helpers for Pyrefly tensor shape annotations.

This package provides the lightweight shape_extensions module used by Pyrefly's tensor shape stubs. It defines runtime no-op versions of the shape typing primitives so annotations such as Tensor[B, T], TypeVar("B"), and assert_shape(x, (2, 3)) can be evaluated by Python while Pyrefly uses the corresponding stubs for static shape checking.

The package is versioned in lockstep with Pyrefly.