Function inlinable

dask/optimization.py:345–359

(key, task)

    dependents = reverse_dict(dependencies)

    def inlinable(key, task):
        if (
            not isinstance(task, GraphNode)
            and istask(task)
            and key not in output
            and dependents[key]
        ):
            try:
                if functions_of(task).issubset(fast_functions) and not any(
                    isinstance(dsk[d], GraphNode) for d in dependents[key]
                ):
                    return True
            except TypeError:
                pass
        return False

    keys = [k for k, v in dsk.items() if inlinable(k, v)]