Exception has occurred: SystemExit 3 about functions-framework-python HOT 6 OPEN

Possibly related, but the exception is different and the error happens every time, regardless if it is a syntax error or not: #213

from functions-framework-python.

Hi @filipre, this seems to be a VS Code issue: https://stackoverflow.com/q/52372810. It's not related to #213.
Can you try the workaround suggested and see if that works for you?

from functions-framework-python.

Thank you for your reply. The Stackoverflow thread shifts the question to "Why does the CLI debugger finishes with the exit code 3"? VS Code will always throw an exception, when python finishes with an error code. I think that's the correct behavior. For example, this code should not throw an exception

sys_exit(0)

But this one should

sys_exit(1)

I could disable "Uncaught Exceptions" but I do not want this because I would also ignore exceptions in my program code.

The exact line that causes the system exit 3 is

run_module_as_main(options.target, alter_argv=True)

and options.target is 'functions_framework'. The method is defined (?) in runpy somewhere. The sys.path looks correct, too and refers to the right virtual env packages and custom packages.

Is there something else I could provide to figure out the root of the problem?

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I created https://github.com/filipre/vscode-debugger-exit-3-bug to debug the issue

Here are some observations:

• I think run_module_as_main always exits with error code 3 and not just sometimes.
• If I uncheck "Raised Exception", "Uncaught Exception" and "User Uncaught Exception", the debugger restarts without raising an exception
• If I then check "User Uncaught Exceptions", I can restart the debugger once but not twice or more times
• If I check "Uncaught Exceptions", it always raises an exception.

Maybe after changing a file, system_frameworks does not "properly" stop the debugger and causes the exit code?

from functions-framework-python.

this error all about library's trigger method.

there is a default "trigger_reload" method and it raises SystemExit when file has been changed.

def trigger_reload(self, filename: str) -> None: self.log_reload(filename) sys.exit(3) # just make it disable in source code

or

`def your_trigger_method(fn): pass

reloader.trigger_reload = your_trigger_method`

from functions-framework-python.

this error all about library's trigger method.

Which library do you mean? functions-framework or something else?

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