i am get error

[MrNodeJS]

kali@kali:~/Desktop/walletool-master$ python wt_extract_keys.py -d wallet.dat -v 0

Traceback (most recent call last): File "wt_extract_keys.py", line 3, in from walletool.wallet_items import parse_wallet_dict, KeyWalletItem File "/home/kali/Desktop/walletool-master/walletool/wallet_items.py", line 5, in from walletool.bc_data_stream import BCDataStream File "/home/kali/Desktop/walletool-master/walletool/bc_data_stream.py", line 4, in assert sys.version_info[0] == 3 # TODO: Use six for 2/3 compat AssertionError

Why not work?