René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Debugger spuriously stops on exceptions when using python interpreter from a virtualenv","articleBody":"## Environment data\r\nVS Code version:  1.19.1\r\nPython Extension version:  0.9.1\r\nPython Version:   2.7.14\r\nOS and version:    MacOs Sierra 10.12.6\r\nVirtualenv version: 15.1.0\r\n\r\n## Actual behavior\r\nWith breaking on `Uncaught Exceptions` option enabled, the debugger breaks inside `re` module when using python interpreter coming from a virtual environment created by virtualenv. Hitting `Continue` button has no end, it keeps breaking inside `re` module, that happens to be indirectly imported in the first line of my code, so I can't move forward with debugging without disabling the `Uncaught Exceptions` option.\r\nWhen using the same version of python interpreter, but installed globally, the debugger does not break inside `re` module, it progresses through the code and breaks on first uncaught exception in my code.\r\n\r\n## Expected  behavior\r\nDebugger should behave the same way, no matter if I use virtualenv or system wide version of python.\r\n\r\n## Steps to reproduce:  \r\n- Create and activate virtualenv\r\n```\r\nmbp:~$ virtualenv code/python-venvs/testenv\r\nNew python executable in /Users/leszek/code/python-venvs/testenv/bin/python2.7\r\nAlso creating executable in /Users/leszek/code/python-venvs/testenv/bin/python\r\nInstalling setuptools, pip, wheel...done.\r\n\r\n@mbp:~$ . code/python-venvs/testenv/bin/activate\r\n\r\n(testenv) @mbp:~$ which python\r\n/Users/leszek/code/python-venvs/testenv/bin/python\r\n\r\n(testenv) @mbp:~$ python --version\r\nPython 2.7.14\r\n```\r\n- Create sample code:\r\n```\r\n(testenv) @mbp:~$ echo '#!/Users/leszek/code/python-venvs/testenv/bin/python\r\n\r\nimport json\r\n\r\nprint var' \u003e code/python-venvs/testenv/src/test.py\r\n```\r\n- Open the `src` dir in VSCode, then open the `test.py` file, and click \"Set as interpreter\" above the first line of code to activate the interpreter provided by the virtualenv.\r\n\r\n- Go to the debugger and click on the gear icon to populate `launch.json` with default settings.\r\n\r\n- Select `Uncaught Exceptions` on the list of breakpoints\r\n\r\n- Start the debugger with the `Python` configuration selected.\r\n\r\n- The debugger breaks inside `sre_parse.py` file, instead it should break on the 5th line of code where I'm referencing undefined variable `var`.\r\n\r\n- Keep clicking on Continue or just F5 on the keyboard, the debugger keeps breaking in the same place.\r\n\r\n- In VSCode, change the interpreter to the system wide one, in my case `/usr/local/bin/python2`, installed with `brew`:\r\n```\r\n(testenv) @mbp:~$ deactivate\r\n\r\n@mbp:~$ which python2\r\n/usr/local/bin/python2\r\n\r\n@mbp:~$ /usr/local/bin/python2 --version\r\nPython 2.7.14\r\n```\r\n\r\n- Restart the debugger, it doesn't break inside `sre_parse.py` file, instead it breaks on the 5th line of my code.\r\n\r\n## Logs\r\nOutput from ```Python``` output panel  \r\n```\r\n```   \r\nOutput from ```Console window``` (Help-\u003eDeveloper Tools menu)\r\n```\r\nextensionHost.ts:290 [Extension Host] debugger listening on port 9334\r\nextensionHost.ts:200 [Extension Host] debugger inspector at %cDebugger listening on port 9334.\r\nWarning: This is an experimental feature and could change at any time.\r\nTo start debugging, open the following URL in Chrome:\r\n    chrome-devtools://devtools/bundled/inspector.html?experiments=true\u0026v8only=true\u0026ws=127.0.0.1:9334/739de81d-5f39-40fa-926c-e43873c6758f\r\n\r\nconsole.ts:123 [Extension Host] (node:91038) DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.\r\nt.log @ console.ts:123\r\n```\r\n\r\n## Settings\r\n#### User settings:\r\n```\r\n{\r\n    \"editor.rulers\": [79],\r\n    \"editor.fontSize\": 11,\r\n    \"terminal.integrated.fontSize\": 12,\r\n    \"editor.fontFamily\": \"Menlo, Monaco, 'Courier New', monospace\",\r\n    // \"python.venvPath\": \"/Users/leszek/code/python-venvs\",\r\n    \"python.linting.pylintPath\": \"/usr/local/bin/pylint\",\r\n    \"editor.minimap.enabled\": true,\r\n    \"window.zoomLevel\": -1,\r\n    // \"debug.allowBreakpointsEverywhere\": true\r\n}\r\n```\r\n#### Workspace settings:\r\n```\r\n{\r\n    \"python.pythonPath\": \"/Users/leszek/code/python-venvs/testenv/bin/python\"\r\n}\r\n```\r\n#### launch.json\r\n```\r\n{\r\n    // Use IntelliSense to learn about possible attributes.\r\n    // Hover to view descriptions of existing attributes.\r\n    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387\r\n    \"version\": \"0.2.0\",\r\n    \"configurations\": [\r\n        {\r\n            \"name\": \"Python\",\r\n            \"type\": \"python\",\r\n            \"request\": \"launch\",\r\n            \"stopOnEntry\": true,\r\n            \"pythonPath\": \"${config:python.pythonPath}\",\r\n            \"program\": \"${file}\",\r\n            \"cwd\": \"${workspaceFolder}\",\r\n            \"env\": {},\r\n            \"envFile\": \"${workspaceFolder}/.env\",\r\n            \"debugOptions\": [\r\n                \"RedirectOutput\"\r\n            ]\r\n        },\r\n        ... skipping the rest here\r\n```","author":{"url":"https://github.com/leszekeljasz","@type":"Person","name":"leszekeljasz"},"datePublished":"2017-12-27T20:11:43.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/490/vscode-python/issues/490"}