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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 pickle_dumps(inbox):
 """ Serializes the first element of the input using the pickle protocol using the fastes binary protocol. """

    # http://bugs.python.org/issue4074
    gc.disable()
    str_ = cPickle.dumps(inbox[0], cPickle.HIGHEST_PROTOCOL)
    gc.enable()
    return str_