debugpy >=1.8.6 errors out when used with numba

[hoxbro]

Before creating a new issue, please check the FAQ to see if your question is answered there.

Environment data

• debugpy version: 1.8.6-1.8.9
• OS and version: Linux and Python 3.12
• Python version (& distribution if applicable, e.g. Anaconda): Anaconda
• Using VS Code or Visual Studio: VS Code

Actual behavior

Debugpy errors out when used with Numba

Expected behavior

The code runs as it did with debugpy 1.8.5

Steps to reproduce:

Run the following code in with a breakpoint

import numba as nb


@nb.njit
def nb_sum(arr):
    xs = 0
    for x in arr:
        xs += x
    return xs


res = nb_sum([1, 2])
print("Set breakpoint here")

Traceback (most recent call last):
  File "_pydevd_sys_monitoring\\_pydevd_sys_monitoring_cython.pyx", line 555, in _pydevd_sys_monitoring_cython._get_func_code_info
KeyError: (3, '/home/shh/projects/holoviz/repos/holoviews/example3.py', <code object nb_sum at 0x7a127fc59110, file "/home/shh/projects/holoviz/repos/holoviews/example3.py", line 3>)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/shh/miniconda3/envs/holoviz/lib/python3.12/runpy.py", line 198, in _run_module_as_main
    return _run_code(code, main_globals, None,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/shh/miniconda3/envs/holoviz/lib/python3.12/runpy.py", line 88, in _run_code
    exec(code, run_globals)
  File "/home/shh/.vscode/extensions/ms-python.debugpy-2024.12.0-linux-x64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/__main__.py", line 71, in <module>
    cli.main()
  File "/home/shh/.vscode/extensions/ms-python.debugpy-2024.12.0-linux-x64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 501, in main
    run()
  File "/home/shh/.vscode/extensions/ms-python.debugpy-2024.12.0-linux-x64/bundled/libs/debugpy/adapter/../../debugpy/launcher/../../debugpy/../debugpy/server/cli.py", line 351, in run_file
    runpy.run_path(target, run_name="__main__")
  File "/home/shh/.vscode/extensions/ms-python.debugpy-2024.12.0-linux-x64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 310, in run_path
    return _run_module_code(code, init_globals, run_name, pkg_name=pkg_name, script_name=fname)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/shh/.vscode/extensions/ms-python.debugpy-2024.12.0-linux-x64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 127, in _run_module_code
    _run_code(code, mod_globals, init_globals, mod_name, mod_spec, pkg_name, script_name)
  File "/home/shh/.vscode/extensions/ms-python.debugpy-2024.12.0-linux-x64/bundled/libs/debugpy/_vendored/pydevd/_pydevd_bundle/pydevd_runpy.py", line 118, in _run_code
    exec(code, run_globals)
  File "/home/shh/projects/holoviz/repos/holoviews/example3.py", line 10, in <module>
    res = nb_sum([1,2])
          ^^^^^^^^^^^^^
  File "<stringsource>", line 69, in cfunc.to_py.__Pyx_CFunc_893235__29_pydevd_sys_monitoring_cython_object__lParen__etc_to_py_4code_18instruction_offset.wrap
  File "_pydevd_sys_monitoring\\_pydevd_sys_monitoring_cython.pyx", line 1662, in _pydevd_sys_monitoring_cython._start_method_event
  File "_pydevd_sys_monitoring\\_pydevd_sys_monitoring_cython.pyx", line 562, in _pydevd_sys_monitoring_cython._get_func_code_info
AssertionError: <code object <module> at 0x7a127fc8d230, file "/home/shh/projects/holoviz/repos/holoviews/example3.py", line 1> != <code object nb_sum at 0x7a127fc59110, file "/home/shh/projects/holoviz/repos/holoviews/example3.py", line 3>

[hoxbro]

It still seems to error out on 1.8.9

[rchiodo]

I would hazard a guess that numba's jitting is interfering with sys.monitoring. See this issue in numba:
numba/numba#9760

And this issue which looks to be the same as yours:
numba/numba#9753

[LancelotGitech]

Current workaround is to downgrade either numba to 0.59.1 or python debugger to v2024.10.0