def replace_builtins():
    if sys.version_info[0] == 2:
        __builtin__.file = file
    __builtin__.open = open
Flattening L{Element} instances with an overridden C{rend} method
dataset/ETHPy150Open mockfs/mockfs/mockfs/storage.py/replace_builtins--crossover with--dataset/ETHPy150Open twisted/nevow/nevow/test/test_element.py/FlattenIntegrationTests.test_oldFlattenableOverriddenRend