Пример #1
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def guarded_enumerate(seq, start=0):
    return NullIter(enumerate(guarded_iter(seq), start=start))
Пример #2
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 def guarded_all(seq):
     return all(guarded_iter(seq))
Пример #3
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def guarded_enumerate(seq, start=0):
    return NullIter(enumerate(guarded_iter(seq), start=start))
Пример #4
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 def guarded_any(seq):
     return any(guarded_iter(seq))