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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 memoize_by_args(func):
 """Memoizes return value of a func based on args."""

    memory = {}

    @functools.wraps(func)
    def memoized(*args):
        if args not in memory.keys():
            value = func(*args)
            memory[args] = value

        return memory[args]

    return memoized