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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 _get_free_display_port(self):
 """ Search a free display port """

        display = 100
        if not os.path.exists("/tmp/.X11-unix/"):
            return display
        while True:
            if not os.path.exists("/tmp/.X11-unix/X{}".format(display)):
                return display
            display += 1