human
Complete the below
def adjust_key_parity(key_in):

    ''''Return the TDES key with parity bits correctly set'
    '''
 ... Give me a the Python code you requested?
assistant
#Here is the Python code you requested.
    def parity_byte(key_byte):
        parity = 1
        for i in xrange(1, 8):
            parity ^= ((key_byte >> i) & 1)
        return ((key_byte & 254) | parity)
    if (len(key_in) not in key_size):
        raise ValueError('Not    a    valid    TDES    key')
    key_out = b('').join([bchr(parity_byte(bord(x))) for x in key_in])
    if ((key_out[:8] == key_out[8:16]) or (key_out[(-16):(-8)] == key_out[(-8):])):
        raise ValueError('Triple    DES    key    degenerates    to    single    DES')
    return key_out