Local variables not shown when in async function running in trio event loop

[DonJayamanne]

Environment data

• PTVSD version: Master
• OS and version: N/A
• Python version (& distribution if applicable, e.g. Anaconda): 3.6
• Using VS Code or Visual Studio:N/A

Actual behavior

Local variables not shown when in async function running in trio event loop

Actual behavior

When running an async function on the Trio event loop, and when stopping on a breakpoint inside the async function, local variables are not shown.

Expected behavior

In the example, local variables should show sleep_time: 5

Steps to reproduce:

import trio

async def main():
    sleep_time = 5
    # set breakpoint below
    print('Going to sleep')
    await trio.sleep(sleep_time)
    print('Woke up')

some_text = 'Hi!'

trio.run(main)

print(some_text)

Logs

Output of Terminal pane:

andersa@Kubuntu-N73JF:~/python/async_debugging_experimental$ cd /home/andersa/python/async_debugging_experimental ; env "PYTHONIOENCODING=UTF-8" "PYTHONUNBUFFERED=1" "PYTHONPATH=/home/andersa/.vscode/extensions/ms-python.python-2018.6.0/pythonFiles/experimental/ptvsd" /home/andersa/.local/share/virtualenvs/async_debugging_experimental-zTVpGFmI/bin/python -m ptvsd --host localhost --port 38433 /home/andersa/python/async_debugging_experimental/test.py

Notes:

• I can replicate this on my Mac (Python 3.6)
• Reported upstream in VS Code Debugger doesn't show local variables in async function running in trio event loop vscode-python#2093

[fabioz]

I'll investigate this (pydev itself doesn't show it, so, should be upstream-pydevd).

[DonJayamanne]

@fabioz lets leave this until we've resolved other critical issues.
I'm not too concerned about this just yet.

[fabioz]

@DonJayamanne seems go to me... right now, this means I'll go back to #72 (note that it's already close to EOD for me, so, I'll probably only work on it next Monday).

Still, if #580/#581 is deemed important enough to have a fix (even if it means parsing python code or analysing bytecode), or there's some other critical I missed, please let me know.

[karthiknadig]

Does not repro in master.