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How do I convert the following byte code to normal python code? I got this code by decompiling a pyc file. Some of the code was decompiled to its original code but the majority did not. Any idea how I can get this byte code to its source code?

L. 174 396 BUILD_LIST_0 0 398 STORE_FAST 'javascripts' L. 177 400 SETUP_LOOP 490 'to 490' 402 LOAD_GLOBAL range 404 LOAD_CONST 0 406 LOAD_GLOBAL len 408 LOAD_FAST 'incident_tags' 410 CALL_FUNCTION_1 1 '1 positional argument' 412 CALL_FUNCTION_2 2 '2 positional arguments' 414 GET_ITER 416 FOR_ITER 488 'to 488' 418 STORE_FAST 'i' L. 178 420 LOAD_GLOBAL str 422 LOAD_FAST 'incident_tags' 424 LOAD_FAST 'i' 426 BINARY_SUBSCR 428 LOAD_ATTR text 430 CALL_FUNCTION_1 1 '1 positional argument' 432 LOAD_GLOBAL list_of_incidents 434 COMPARE_OP not-in 436_438 POP_JUMP_IF_FALSE 462 'to 462' L. 179 440 LOAD_FAST 'javascripts' 442 LOAD_METHOD append 444 LOAD_FAST 'incident_tags' 446 LOAD_FAST 'i' 448 BINARY_SUBSCR 450 LOAD_METHOD get_attribute 452 LOAD_STR 'href' 454 CALL_METHOD_1 1 '1 positional argument' 456 CALL_METHOD_1 1 '1 positional argument' 458 POP_TOP 460 JUMP_BACK 416 'to 416' 462_0 COME_FROM 436 '436' L. 181 462 LOAD_GLOBAL print 464 LOAD_STR 'Ignore ' 466 LOAD_FAST 'incident_tags' 468 LOAD_FAST 'i' 470 BINARY_SUBSCR 472 LOAD_ATTR text 474 BINARY_ADD 476 LOAD_STR '. It is already completed.' 478 BINARY_ADD 480 CALL_FUNCTION_1 1 '1 positional argument' 482 POP_TOP 484_486 JUMP_BACK 416 'to 416' 488 POP_BLOCK 490_0 COME_FROM_LOOP 400 '400' L. 184 490_492 SETUP_LOOP 3694 'to 3694' 494 LOAD_GLOBAL range 496 LOAD_CONST 0 498 LOAD_GLOBAL len 500 LOAD_FAST 'javascripts' 502 CALL_FUNCTION_1 1 '1 positional argument' 504 CALL_FUNCTION_2 2 '2 positional arguments' 506 GET_ITER 508_0 COME_FROM 636 '636' 508_510 FOR_ITER 3692 'to 3692' 512 STORE_FAST 'i' L. 187 514 LOAD_FAST 'self' 516 LOAD_ATTR driver 518 LOAD_METHOD execute_script 520 LOAD_FAST 'javascripts' 522 LOAD_FAST 'i' 524 BINARY_SUBSCR 526 CALL_METHOD_1 1 '1 positional argument' 528 POP_TOP L. 189 530 LOAD_GLOBAL time 532 LOAD_METHOD sleep 534 LOAD_CONST 1 536 CALL_METHOD_1 1 '1 positional argument' 538 POP_TOP
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  • It's not something available in standard Python, and I'm not aware of any 3rd-party tools that do this kind of conversion. Commented Sep 20, 2021 at 17:22
  • Some potential tools are listed in this question: stackoverflow.com/questions/1149513/… Commented Sep 20, 2021 at 17:23
  • This wouldn't be trivial, there's not just some built-in function that will do this. You'd be better off googling for projects that already exist. Of course, this is going to be very version dependent. Commented Sep 20, 2021 at 17:25
  • This amount of bytecode is trivial to decompile by hand. Are you really asking about some larger, unspecified body of code? Commented Sep 20, 2021 at 22:49
  • 2
    @DavisHerring Yes. I just showed a snippet of the data Commented Sep 24, 2021 at 19:50

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I suggest you use the uncompyle6 module. (You need the raw .pyc or .pyo file though). To install, run

~$ pip install uncompyle6

Then, to decompile any Python bytecode file, run

~$ uncompyle6 path/to/bytecode/file.pyc

For an overview of all available options, run

~$ uncompyle6 -h

It supports all Python versions from 2.4 to 3.8. You can find the project' homepage at https://github.com/rocky/python-uncompyle6.

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I achieved this using by importing the dis module and using the dir() method to get the __code__ of each function, further used the dir() to get the co_code and finally using dis function to get the bytecodes.

The process is really tedious but it gave me the results I was looking for and can be automated if you understand the concept.

def add(a,b): return a+b # This displays all attributes available to the add function. # There are tons of them but I'm only interested in the __code__. dir(add) my_object = add.__code__ # This displays a list of available attributes to the code object (my_object) but # I'm only interested in the co_code attribute. dir(my_object) code = my_object.co_code # Convert the co_code object to list. This displays the bytecode but to # view it in human readable form use dis.opname list(code) import dis # To view all available attributes. I'm interested in a only few of them. dir(dis) dis.opname() # supply the bytecode value.
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