def R(seqn):
    for i in seqn:
        yield i
like re.sub, but replacements don't have to be text;
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/test/test_set.py/R--crossover with--dataset/ETHPy150Open tabatkins/bikeshed/bikeshed/config.py/reSubObject