how to debug python in pyq with vscode

[fouvy]

Questions

• [ ] Which operating system are you using (if Linux, please provide flavour of it, i.e RedHat, CentOS or Ubuntu), is it 32-bit, or 64-bit?

  ubuntu 18.04 lts 64-bit

• [ ] Which version of PyQ are you running? Please provide output of pyq --versions, if PyQ isn't operational, please provide Python interpreter version and PyQ version python -V; python3 -V; pip list | grep pyq:

  4.2.1

• [ ] Which version of kdb+ are you using, is it 32-bit or 64-bit?

  64

  • [ ] If on 64-bit, is your QLIC set? Please provide output env | grep QLIC on linux/macOS, or set|grep QLIC on Windows.

• [ ] Did you use virtual environment to install PyQ? If not, why?

  • no

• [ ] Where is your QHOME? Please provide output env | grep QHOME on linux/macOS, or set|grep QHOME on Windows.

  /q

• [ ] Do you use Conda? If so, what version?

  no

Steps to reproduce the issue

I want to debug my python code in pyq which runs some query of table in kdb+. Anyone had solved this issue? This is my launch.json when i debug python code without q code under python 3.6 interpreter.

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: train gbm",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "console": "integratedTerminal"
        }
    ]
}

Anyone figured out how to setting pyq interpreter of launch.json in vscode?

Expected result

Actual result

Workaround

If you know workaround, please provide it here.

[abalkin]

This does not seem to be a pyq issue. Please try to direct your question to the k4 listbox or a vscode forum.

[fouvy]

Finally, I use pyvsd to debug my python code in pyq. First, install ptvsd

pip install ptvsd

Then, add debug code, in the python code we wanna debug:

# debug code section
import ptvsd
ptvsd.enable_attach(address=('localhost', 5678), redirect_output=True)
ptvsd.wait_for_attach()
breakpoint()

add python attach to launch.json

{"name":"Python: attach","type":"python","request":"attach","port":5678,"host":"localhost","pathMappings":[{"localRoot":"${workspaceFolder}/kdb","remoteRoot":"."}]}

At last, run code and use vscode attach

 pyq your_pyq_python_code.py

[fouvy]

Today, I found a new way to debug pyq without ptvsd in vscode. I have python2.7 python3.6 in my ubuntu, and installed pyq under python3.6 env without conda. First, update alternatives and bind pyq to python command

sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.6 2
sudo update-alternatives --install /usr/bin/python python /usr/local/bin/pyq 3

Second, config python command to pyq

sudo update-alternatives --config python

And select: 3 Finally, python command has alternative to pyq. And you can debug pyq code like common python code. Following is my bash command example run pyq:

fouvy@Zoom:~$ python
Python 3.6.8 (default, Jan 14 2019, 11:02:34) 
[GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyq
>>> exit()

@sashkab @abalkin

[sashkab]

If you were to use PyQ inside virtual environment, as we recommend, you could have just symlink python to pyq and be done with it. But since you not following our suggestions -- feel free to re-invent the wheel ;-) I'm enjoying reading.