"x7fxe8x89x00x00x00x60x89xe5x31xd2x64x8bx52"

with open('a', 'rb') as f:
    byte = f.read(1)
    hexbyte = '\x%02s' % byte
    print hexbyte

txt = open('out.txt', 'w')
print >> txt, hexbyte
txt.close()

from binascii import hexlify
with open('test', 'rb') as f:
  print(hexlify(f.read()).decode('utf-8'))

with open('input_file', 'rb') as file:
    print repr(file.read())

with open('input_file', 'rb') as file:
    print "\x" + "\x".join([c.encode('hex') for c in file.read()])

with open("default.png",'rb') as file_png:
    a = file_png.read()

l = []
l.append(a)
print l