lookup_array_backend

odl.lookup_array_backend(impl: str) → ArrayBackend

Convenience function for getting an ArrayBackend from an impl argument. This is helpful to both ensure that a backend actually exists and to retrieve it.

Parameters

implstr: backend identifier

Examples

>>> lookup_array_backend('numpy')
ArrayBackend(impl=numpy)
>>> lookup_array_backend('something_else')
Traceback (most recent call last):
KeyError: "The implementation something_else is not supported by ODL. Please select a backend in ['numpy']"
>>> lookup_array_backend(72)
Traceback (most recent call last):
AssertionError: f"The impl parameter must be a string, got int"