3           0 LOAD_CONST               1 (4919)
              2 STORE_FAST               0 (k)

  4           4 LOAD_CONST               2 ('CTF_BD{__REDACTED__}')
              6 STORE_FAST               1 (flag)

  5           8 BUILD_LIST               0
             10 STORE_FAST               2 (n)

  6          12 LOAD_GLOBAL              0 (range)
             14 LOAD_GLOBAL              1 (len)
             16 LOAD_FAST                1 (flag)
             18 CALL_FUNCTION            1
             20 LOAD_CONST               3 (1)
             22 BINARY_SUBTRACT
             24 CALL_FUNCTION            1
             26 GET_ITER
        >>   28 FOR_ITER                46 (to 76)
             30 STORE_FAST               3 (i)

  7          32 LOAD_FAST                2 (n)
             34 LOAD_METHOD              2 (append)
             36 LOAD_FAST                0 (k)
             38 LOAD_GLOBAL              3 (ord)
             40 LOAD_FAST                1 (flag)
             42 LOAD_FAST                3 (i)
             44 BINARY_SUBSCR
             46 CALL_FUNCTION            1
             48 LOAD_GLOBAL              3 (ord)
             50 LOAD_FAST                1 (flag)
             52 LOAD_FAST                3 (i)
             54 LOAD_CONST               3 (1)
             56 BINARY_ADD
             58 BINARY_SUBSCR
             60 CALL_FUNCTION            1
             62 BINARY_XOR
             64 LOAD_CONST               4 (4)
             66 BINARY_LSHIFT
             68 BINARY_XOR
             70 CALL_METHOD              1
             72 POP_TOP
             74 JUMP_ABSOLUTE           28

  8     >>   76 LOAD_GLOBAL              4 (print)
             78 LOAD_CONST               5 ('n = ')
             80 LOAD_FAST                2 (n)
             82 CALL_FUNCTION            2
             84 POP_TOP
             86 LOAD_CONST               0 (None)
             88 RETURN_VALUE