Debugger does not stop for uncaught Python exceptions raised from native code

[DonJayamanne]

From @zneak on August 3, 2017 0:9

Environment data

VS Code version: Version 1.14.2 (1.14.2)
Python Extension version: 0.6.9
Python Version: Python 2.7.10
OS and version: macOS Sierra 10.12.4

Actual behavior

The debugger does not stop when an uncaught exception is raised from native code, even if the breakpoint on "uncaught exceptions" is set.

Expected behavior

The debugger should probably stop wherever looks the most appropriate (probably on the most recent Python stack frame).

Steps to reproduce:

• Install Cython
• Create an "ext.pyx" file that only contains raise KeyError("oopsie")
• Build extension with Cython, then copy the shared object to a place that you can easily import it from (like the source folder)
• From VS Code, create and run a Python script that imports said extension

Logs

Output from Python output panel: (traceback ...)
Output from Console window (Help->Developer Tools menu): (empty)

Copied from original issue: DonJayamanne/pythonVSCode#1137

[DonJayamanne]

From @zneak on August 3, 2017 0:15

Looks like the debugging support comes from IPython. Let me know if I should see help there instead.

[DonJayamanne]

@zneak
Please accept my apologies for not getting back to you any sooner. I've looked into this and found that I can get it to work by selecting the checkbox All Exceptions under Breakpoints in the Debugger panel. As a workaround, please select this checkbox for the moment.

I'll look into why it isn't breaking when Uncaught Exceptions is selected.

[DonJayamanne]

Test on PTVS Tools (Visual Studio) and I can see the same behavior.
@ericsnowcurrently you might want to be across this.

[DonJayamanne]

@zneak
I've got some great news for you. We've been actively working on a new debugger for the python extension and believe this feature works in that experimental debugger.

Please ensure you have the latest version of the python extension and

• Test this using the Experimental debugger.
• Or just change the setting "type":"python" in launch.json to "type":"pythonExperimental"

Do let us know how this goes.

Please ensure the pyx files are located in the same directory as the compiled output (this way the debugger will file the file and break at the corresponding line of code in the pyx file).