>>3 here,

> it also produces incorrect output for passwords containing any of: &<>"',

i just fixed this, i don't know enough python to fix the problem with shift jis.
i assumed doing

    pw = pw.encode('shift_jis','ignore')

at the beginning of mktripcode would work but that still gives the same error:

> UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 0: ordinal not in range(128)