Python password generator with self random seed

i try make python password generator with random seed from bytes.

import sys
import time
from ctypes import *
import random
def MMSYSERR_NOERROR(value):
    if value !=  0 :
        raise Exception("Error while running winmm.dll function", value)
    return value

for funcname in ["waveInOpen", "waveInPrepareHeader",
                 "waveInAddBuffer", "waveInStart",
                 "waveInStop", "waveInReset",
                 "waveInUnprepareHeader", "waveInClose"]:
    vars()[funcname] = windll.winmm[funcname]
    vars()[funcname].restype = MMSYSERR_NOERROR

    time.sleep(1)


class WAVEFORMATEX(Structure):
    WAVE_FORMAT_PCM = 1
    _fields_ = [("wFormatTag", c_ushort),
                ("nChannels", c_ushort),
                ("nSamplesPerSec", c_uint),
                ("nAvgBytesPerSec", c_uint),
                ("nBlockAlign", c_ushort),
                ("wBitsPerSample", c_ushort),
                ("cbSize", c_ushort)]

    def __init__(self, samples=48000, bits=16, channels=1):
        self.wFormatTag = WAVEFORMATEX.WAVE_FORMAT_PCM
        self.nSamplesPerSec = samples
        self.wBitsPerSample = bits
        self.nChannels = channels
        self.nBlockAlign = int(self.nChannels*self.wBitsPerSample/8)
        self.nAvgBytesPerSec = self.nBlockAlign*self.nSamplesPerSec
        self.cbSize =  0 

class WAVEHDR(Structure):
    _fields_ = [("lpData", POINTER(c_char)),
                ("dwBufferLength", c_uint),
                ("dwBytesRecorded", c_uint),
                ("dwUser", c_uint), # User data dword or pointer
                ("dwFlags", c_uint),
                ("dwLoops", c_uint),
                ("lpNext", c_uint), # pointer reserved
                ("reserved", c_uint)] # pointer reserved
    def __init__(self, waveformat):
        self.dwBufferLength = waveformat.nAvgBytesPerSec
        self.lpData = create_string_buffer('\000' * self.dwBufferLength)
        self.dwFlags =  0

waveFormat = WAVEFORMATEX(samples=48000,bits=16)
waveBufferArray = [WAVEHDR(waveFormat) for i in range(3)]       

WRITECALLBACK = WINFUNCTYPE(None, c_uint, c_uint, POINTER(c_uint), POINTER(WAVEHDR), c_uint)
random.seed(bytes)
def pythonWriteCallBack(HandleWaveIn, uMsg, dwInstance, dwParam1, dwParam2):
    MM_WIM_CLOSE = 0x3BF
    MM_WIM_DATA = 0x3C0
    MM_WIM_OPEN = 0x3BE
    if   uMsg == MM_WIM_OPEN:
        print ("Open handle =", HandleWaveIn)
    elif uMsg == MM_WIM_CLOSE:
        print ("Close handle =", HandleWaveIn)
    elif uMsg == MM_WIM_DATA:
        #print "Data handle =", HandleWaveIn
        wavBuf = dwParam1.contents
        if wavBuf.dwBytesRecorded >  0 :
            bits = [ord(wavBuf.lpData[i]) & 1 for i in range( 0 ,wavBuf.dwBytesRecorded,2)]
            bias = [bits[i] for i in range( 0 ,len(bits),2) if bits[i] != bits[i+1]]
            bytes =  [chr(reduce(lambda v,b:v<<1|b,bias[i-8:i], 0 )) for i in range(8,len(bias),8)]

            rndstr = ''.join(random.choice('QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm1234567890') for i in range(8))
            sys.stdout.write(rndstr)

        if wavBuf.dwBytesRecorded == wavBuf.dwBufferLength:
            waveInAddBuffer(HandleWaveIn, dwParam1, sizeof(waveBuf))
        else:
            print ("Releasing one buffer from", dwInstance[ 0 ])
            dwInstance[ 0 ]-=1
    else:
        raise "Unknown message"


writeCallBack=WRITECALLBACK(pythonWriteCallBack)
try:
    ExitFlag = c_uint(3)
    HandleWaveIn = c_uint( 0 )
    WAVE_MAPPER = c_int(-1)
    WAVE_FORMAT_QUERY = c_int(1)
    CALLBACK_FUNCTION = c_int(0x30000)

    waveInOpen( 0 , WAVE_MAPPER, byref(waveFormat),  0 ,  0 , WAVE_FORMAT_QUERY)
    waveInOpen(byref(HandleWaveIn), WAVE_MAPPER, byref(waveFormat), writeCallBack, byref(ExitFlag), CALLBACK_FUNCTION)

    for waveBuf in waveBufferArray:
        waveInPrepareHeader(HandleWaveIn, byref(waveBuf), sizeof(waveBuf))
        waveInAddBuffer(HandleWaveIn, byref(waveBuf), sizeof(waveBuf))

    waveInStart(HandleWaveIn)
    while 1:
        time.sleep(1)


except KeyboardInterrupt:
    waveInReset(HandleWaveIn)
    while 1:
        time.sleep(1)
        if ExitFlag.value ==  0 :
            break
    for waveBuf in waveBufferArray:
        time.sleep(1)
        waveInUnprepareHeader(HandleWaveIn, byref(waveBuf), sizeof(waveBuf))

    waveInClose(HandleWaveIn)

i try use the out put from 'bytes = [chr(reduce(lambda v,b:v<<1|b,bias[i-8:i], 0 )) for i in range(8,len(bias),8)]'

how seed for random for this .

  'rndstr = ''.join(random.choice('QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm1234567890') for i in range(8))
            sys.stdout.write(rndstr)`

but i hv problem - it's not use bytes - it's use how seed word bytes :/ random.seed(bytes)