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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 override(original, results):
 """ If a receiver to a signal returns a value, we override the original value with the last returned value. :param original: The original value :param results: The results from the signal """

    overrides = [v for fn, v in results if v is not None]
    if len(overrides) == 0:
        return original
    return overrides[-1]