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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def as_tuple(obj):
    " Given obj return a tuple "

    if not obj:
        return tuple()

    if isinstance(obj, (tuple, set, list)):
        return tuple(obj)

    if hasattr(obj, '__iter__') and not isinstance(obj, dict):
        return obj

    return obj,