def preorder(self, f):
        for x in f(self):
            yield x
        for c in self.children():
            for x in c.postorder(f):
                yield x
Patch sys args.
dataset/ETHPy150Open uwescience/raco/raco/algebra.py/Operator.preorder--crossover with--dataset/ETHPy150Open GaretJax/sphinx-autobuild/sphinx_autobuild/test/test_autobuild.py/patched_args