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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 i2s_frameid(x):
 """ Get representation name of a pnio frame ID :param x: a key of the PNIO_FRAME_IDS dictionary :returns: str """

    try:
        return PNIO_FRAME_IDS[x]
    except KeyError:
        pass
    if 0x0100 <= x < 0x1000:
        return "RT_CLASS_3 (%4x)" % x
    if 0x8000 <= x < 0xC000:
        return "RT_CLASS_1 (%4x)" % x
    if 0xC000 <= x < 0xFC00:
        return "RT_CLASS_UDP (%4x)" % x
    if 0xFF80 <= x < 0xFF90:
        return "FragmentationFrameID (%4x)" % x
    return x