Flask_script with venv debug does not working

[Sabutobi]

Environment data

VS Code version: 1.20.1
Python Extension version: 2018.1 (01 Feb 2018)
Python Version: 3.6
OS and version: Ubuntu 16.04

Actual behavior

ModuleNotFoundError, No module named 'flask_script'
NOTE: if I'll try to run from terminal:
source ./venv/bin/activate
python manage.py runserver --port 50000 --host some.valid.ho.st
All dependencies are working as expected

Expected behavior

Enable debug and breakpoints. Dependencies imported as expected.

Steps to reproduce:

• Add this object launch.json :

{
            "name": "Somename",
            "type": "python",
            "request": "launch",
            "stopOnEntry": false,
            "pythonPath": "${workspaceFolder}/venv/bin/python3.6",
            "program": "${workspaceFolder}/manage.py",
            "cwd": "${workspaceFolder}",
            "env": {},
            "envFile": "${workspaceFolder}/.env",
            "console": "integratedTerminal",
            "args": [
                "runserver",
                "--port",
                "50000",
                "--host",
                "somevalidHost"
            ],
            "debugOptions": [
                "RedirectOutput"
            ]
        },```
-  Add this workspace settings:
```json
{
    "python.linting.pylintArgs": [
        "--load-plugins",
        "pylint_flake8"
    ],
    "python.linting.enabled": true,
    "python.linting.lintOnSave": true,
    "python.linting.pylintEnabled": true,
    "editor.formatOnSave": true,
    "python.linting.pylintPath": "pylint",
    "python.formatting.provider": "autopep8",
    "python.linting.flake8Path": "flake8",
    "python.linting.flake8Enabled": true,
    "editor.rulers": [
        120
    ],
    "python.terminal.activateEnvironments": false,
    "python.unitTest.pyTestEnabled": false,
    "python.pythonPath": "${workspaceFolder}/venv/bin/python3.6"
}```
## Logs
Output from ```Python``` output panel  
None output from Python. From integratedTerminal:

cd /home/path/to/folder ; env "PYTHONIOENCODING=UTF-8" "PYTHONUNBUFFERED=1" /home/path/to/folder/venv/bin/python3.6 /home/user/.vscode/extensions/ms-python.python-2018.1.0/pythonFiles/PythonTools/visualstudio_py_launcher.py /home/user/Documents/project_folder 42923 34806ad9-833a-4524-8cd6-18ca4aa74f14 DUMMYVALUE /home/user/path/tofolder/manage.py runserver --port 50000 --host some.valid.ho.st 
Traceback (most recent call last):
  File "/home/path/to/folder/manage.py", line 7, in <module>
    from flask_script import Command, Manager, Option, Server, Shell
ModuleNotFoundError: No module named 'flask_script'```

Output from Console window (Help->Developer Tools menu)

Developer Tools / console is empty

[DonJayamanne]

Please confirm flask_script has been installed in /home/path/to/folder/venv/bin/python3.6
Sounds like it isn't installed.
Please try running the script as follows and let me know what you get:
/home/path/to/folder/venv/bin/python3.6 manage.py runserver --port 50000 --host some.valid.ho.st

[Sabutobi]

Hi! Thanks for advise.
/home/path/o/folder/venv/bin/python3.6 manage.py runserver --port 50000 --host some.valid.ho.st -
works fine.
So to solve this issue I have add sting "pythonPath":"/home/path/o/folder/venv/bin/python3.6" to launch.json file and that have launched as expected.
At my opinion this is bug of VS code extention. I think reason in "${workspaceFolder}" flow,because absolute path have launched application. Thank for help. If you need some additional information, I'll be glad to help. Have a nice day and mood.

[DonJayamanne]

Duplicate of #691