def assertPbIsInitialized(self, pb):
    explanation = []
    assert pb.IsInitialized(explanation), explanation

    pb.Encode()
Depth-first search.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/datastore_file_stub.py/DatastoreFileStub.assertPbIsInitialized--crossover with--dataset/ETHPy150Open pmatiello/python-graph/core/pygraph/algorithms/searching.py/depth_first_search