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HOW_TO_USE.md

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Use TransMap on Your Own Python Program

To apply TransMap to your own Python program, you need to prepare the following files (you can look at the example at data/transmap/tests/evalex/real/py_js_codex0err/_playgound).

You need to prepare these two files at least:

  • source.py: The Python program to be translated.
  • target_tmpl.js: The JavaScript program template used for generating the translation target.js.

NOTE: If you put the tests in source.py and target_tmpl.js: as _playground does, you don't need to modify source_test.py and target_test.py and you can ignore these two files.

Demonstrate the Process on _playground

  1. First go to the _playground folder mentioned above.

  2. Open source.py. There are multiple segments in the file.

  3. Put some Python code in my_second_segment. For example,

##### Segment BEGIN my_second_segment
def accumulate_list(ls):
    return []
    acc_list = []
    acc = 0
    for x in ls:
        acc += x
        acc_list.append(acc)
    return acc_list
##### Segment END
  1. Then, add test code on line 48:
    assert_iter_almost_equal(accumulate_list([1, 2, 3, 4, 5]), [1, 3, 6, 10, 15])
  1. Then, open target_tmpl.js and add the same test on line 48:
    assertIterAlmostEqual(accumulate_list([1, 2, 3, 4, 5]), [1, 3, 6, 10, 15]);

  1. Open a shell under data/transmap/cases/. Check the content of openai.key. It should be a valid OpenAI API key. If not, please refer to Additional Requirements 2 in INSTALL.md to set up the API key.

  2. Run the following commands under data/transmap/cases/:

python3 ./classic_translate.py playground
python3 ./classic_srcmapping.py playground

  1. Then, you should be able to see the translated JavaScript at target.rawchatgpt.js and the source map at target.rawchatgpt.js.srcmap.

  2. Copy those two files to target.fixed.js and target.fixed.js.srcmap. Then, open the TransMap UI for Case Studies (mentioned in INSTALLATION). Choose _playground in the drop-down menu at the top. Click Load (Case Study).

  3. Then, click (0) Test to check if the code can run. If it shows that there is a MyLogError MISMATCH error, it indicates that there is a hidden semantic mistake in the translated code. You can click AUTO-Iterate to use TransMap to find the bug.

NOTE: If the translated code already pass the test, you can either find a more challenging Python program or manually introduce a hidden semantic mistake to check if TransMap works. For example, you can change the acc += ls[i]; in the JavaScript translation into acc += i; and TransMap should be able to highlight this line:

transmap-playground