Allow Raises-exception

[blink1073]

References

Fixes #2412

Code changes

Changes the stop_on_error behavior of OutputArea.execute to account for raises-exception tags.

User-facing changes

Users are able to use the raises-exception tags in the same way they have been available to in nbconvert and notebook. cf jupyter/notebook#2549 , jupyter/nbconvert#684

Backwards-incompatible changes

None

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[sleighsoft]

@blink1073
Running jupyterlab 1.02.

I have the following cell

function_2('Hello World') # This does not work, missing second positional argument

Cell metadata:

{
    "tags": [
        "raises-exception"
    ]
}

Error when running the cell

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-25-31feb4d8c340> in <module>
----> 1 function_2('Hello World') # This does not work, missing second positional argument

NameError: name 'function_2' is not defined

Problem: Juptyerlab still stops at that exception when "Run All Cells". Did I misunderstand something?

[joelostblom]

@sleighsoft I am having the same issue on jl-1.0.5 (it works fine in the classic notebook). Did you find a solution?

[sleighsoft]

Not yet

[vidartf]

See current discussion in #7015.