TypeError: 'map' object is not subscriptable

[cascioli]

Traceback (most recent call last):
  File "HackTheWorld.py", line 151, in <module>
    transformedShellcode = xor(shellcodeBytes, masterKey)
  File "HackTheWorld.py", line 43, in xor
    (data[i] ^ keyAsInt[i % l]) for i in range(0,len(data))
  File "HackTheWorld.py", line 43, in <genexpr>
    (data[i] ^ keyAsInt[i % l]) for i in range(0,len(data))
TypeError: 'map' object is not subscriptable

It shows me this error after I enter encryption key. Can you help me, please?

[anasorova]

Use python2.7