def pickle_persistent_load(identifier):
    if identifier == 'UNKNOWN': return UNKNOWN
    else: raise pickle.UnpicklingError, 'Invalid persistent id'
Trie iterator tests.
dataset/ETHPy150Open QuantSoftware/QuantSoftwareToolkit/Legacy/epydoc-3.0.1/epydoc/cli.py/pickle_persistent_load--crossover with--dataset/ETHPy150Open google/pygtrie/test.py/TrieTestCase.DoTestIterator