python 3.x - Python3 Unicode Decode Error -

i unicodedecodeerror: 'utf-8' codec can't decode byte 0xe8 in position 0: invalid continuation byte

when try call codecs.decode(x, 'utf-8') x = b'\xe8\xd0\xca@\xee\xe4\xca\xc6\xd6@\xde\xcc@\xe8\xd0\xca@\xd0\xca\xe6\xe0\xca\xe4\xea\xe6\x14\xc4\xf2@\xd0\xca\xdc\xe4\xf2@\xee\xc2\xc8\xe6\xee\xde\xe4\xe8\xd0@\xd8\xde\xdc\xce\xcc\xca\xd8\xd8\xde\xee\x14\x14\xd2\xe8@\xee\xc2\xe6@\xe8\xd0\xca@\xe6\xc6\xd0\xde\xde\xdc\xca\xe4@\xd0\xca\xe6\xe0\xca\xe4\xea\xe6\x14@@@@@@\xe8\xd0\xc2\xe8@\xe6\xc2\xd2\xd8\xca\xc8@\xe8\xd0\xca@\xee\xd2\xdc\xe8\xe4\xf2@\xe6\xca\xc2\x14\xc2\xdc\xc8@\xe8\xd0\xca@\xe6\xd6\xd2\xe0\xe0\xca\xe4@\xd0\xc2\xc8@\xe8\xc2\xd6\xca\xdc@\xd0\xd2\xe6@\xd8\xd2\xe8\xe8\xd8\xca@\xc8\xc2\xea\xce\xd0\xe8\xca\xe4\x14@@@@@@\xe8\xde@\xc4\xca\xc2\xe4@\xd0\xd2\xda@\xc6\xde\xda\xe0\xc2\xdc\xf2\\\x14\x14\xc4\xd8\xea\xca@\xee\xca\xe4\xca@\xd0\xca\xe4@\xca\xf2\xca\xe6@\xc2\xe6@\xe8\xd0\xca@\xcc\xc2\xd2\xe4\xf2z\xcc\xd8\xc2\xf0\x14@@@@@@\xd0\xca\xe4@\xc6\xd0\xca\xca\xd6\xe6@\xd8\xd2\xd6\xca@\xe8\xd0\xca@\xc8\xc2\xee\xdc@\xde\xcc@\xc8\xc2\xf2\x14\xc2\xdc\xc8@\xd0\xca\xe4@\xc4\xde\xe6\xde\xda@\xee\xd0\xd2\xe8\xca@\xc2\xe6@\xe8\xd0\xca@\xd0\xc2\xee\xe8\xd0\xde\xe4\xdc@\xc4\xea\xc8\xe6\x14@@@@@@\xe8\xd0\xc2\xe8@\xde\xe0\xca@\xd2\xdc@\xe8\xd0\xca@\xda\xde\xdc\xe8\xd0@\xde\xcc@\xda\xc2\xf2\\\x14\x14\xe8\xd0\xca@\xe6\xd6\xd2\xe0\xe0\xca\xe4@\xd0\xca@\xe6\xe8\xde\xde\xc8@\xc4\xca\xe6\xd2\xc8\xca@\xe8\xd0\xca@\xd0\xca\xd8\xda\x14@@@@@@\xd0\xd2\xe6@\xe0\xd2\xe0\xca@\xee\xc2\xe6@\xd2\xdc@\xd0\xd2\xe6@\xda\xde\xea\xe8\xd0\x14\xc2\xdc\xc8@\xd0\xca@\xee\xc2\xe8\xc6\xd0\xca\xc8@\xd0\xde\xee@\xe8\xd0\xca@\xec\xca\xca\xe4\xd2\xdc\xce@\xcc\xd8\xc2\xee@\xc8\xd2\xc8@\xc4\xd8\xde\xee\x14@@@@@@\xe8\xd0\xca@\xe6\xda\xde\xd6\xca@\xdc\xde\xee@\xee\xca\xe6\xe8@\xdc\xde\xee@\xe6\xde\xea\xe8\xd0\\\x14\x14\xe8\xd0\xca\xdc@\xea\xe0@\xc2\xdc\xc8@\xe6\xe0\xc2\xd6\xca@\xc2\xdc@\xde\xd8\xc8@\xe6\xc2\xd2\xd8\xde\xe4\x14@@@@@@\xd0\xc2\xc8@\xe6\xc2\xd2\xd8\xca\xc8@\xe8\xde@\xe8\xd0\xca@\xe6\xe0\xc2\xdc\xd2\xe6\xd0@\xda\xc2\xd2\xdc\x14\xd2@\xe0\xe4\xc2\xf2@\xe8\xd0\xca\xca@\xe0\xea\xe8@\xd2\xdc\xe8\xde@\xf2\xde\xdc\xc8\xca\xe4@\xe0\xde\xe4\xe8\x14@@@@@@\xcc\xde\xe4@\xd2@\xcc\xca\xc2\xe4@\xc2@\xd0\xea\xe4\xe4\xd2\xc6\xc2\xdc\xca\\\x14\x14\xd8\xc2\xe6\xe8@\xdc\xd2\xce\xd0\xe8@\xe8\xd0\xca@\xda\xde\xde\xdc@\xd0\xc2\xc8@\xc2@\xce\xde\xd8\xc8\xca\xdc@\xe4\xd2\xdc\xce\x14@@@@@@\xc2\xdc\xc8@\xe8\xdez\xdc\xd2\xce\xd0\xe8@\xdc\xde@\xda\xde\xde\xdc@\xee\xca@\xe6\xca\xca\x14\xe8\xd0\xca@\xe6\xd6\xd2\xe0\xe0\xca\xe4@\xd0\xca@\xc4'

i tried use binascii.unhexlify('%x' % (int('0b' + bnum, 2))).decode('utf-8') bnum long binary string

the text utf-8 encoded .txt file

edit: lets have 2 bit strings, first exact bit string converting text bit string. second extracted image. second same first point cut off because image being hidden in didn't have enough pixels.

example: http://pastebin.com/nnah9deb

why throw unicodedecodeerror: 'utf-8' codec can't decode byte 0xe8 in position 0: invalid continuation byte error if both contain same data point second 1 cuts off?

edit2: when convert 2 bit strings hex via hex(int(<var name>, 2)) different results, converting first couple of bytes returns same result.

the decode of decmsg misaligned. if add 7 0 bits end of message or truncate last bit, decodes method. code tl;dr.

import math  initmsg = '11101000110100001100101...'  # truncated due post limits. decmsg = '11101000110100001100101...'  # printing first 25 chars of message bevity:  = int(initmsg,2) print(a.to_bytes(math.ceil(a.bit_length()/8),'big')[:25])  = int(decmsg,2) print(a.to_bytes(math.ceil(a.bit_length()/8),'big')[:25])  = int(decmsg+'0000000',2) print(a.to_bytes(math.ceil(a.bit_length()/8),'big')[:25])  = int(decmsg[:-1],2) print(a.to_bytes(math.ceil(a.bit_length()/8),'big')[:25]) 

output:

b'the wreck of hesperus' b'\xe8\xd0\xca@\xee\xe4\xca\xc6\xd6@\xde\xcc@\xe8\xd0\xca@\xd0\xca\xe6\xe0\xca\xe4\xea\xe6' b'the wreck of hesperus' b'the wreck of hesperus' 

compare \xe8 t in binary:

>>> format(ord('t'),'08b') '01110100' >>> format(0xe8,'08b') '11101000'