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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 fw_hex_to_int(hex_str, words):
 """Unpack hex string into integers. Use little-endian and unsigned int format. Specify number of words to unpack with argument words. """

    return struct.unpack('<{}H'.format(words), binascii.unhexlify(hex_str))