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ipython-contrib / jupyter_contrib_nbextensions

A collection of various notebook extensions for Jupyter
http://jupyter-contrib-nbextensions.readthedocs.io/en/latest
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Fix duplicate call of extension "init_cell" #1474

Closed juice500ml closed 1 year ago

juice500ml commented 4 years ago

There exists a possibility of calling function run_init_cells() twice on function run_init_cells_asap(). Kernel exists only as two cases: (1) Kernel is already ready, and (2) Kernel is not yet ready, and in both cases, run_init_cells() should be called only once. On case (1), there is no need to hook an event on kernel_ready, as cells are already initialized. If the event hook exists, in some specific cases, run_init_cells() is called twice, due to racing conditions.

juhasch commented 1 year ago

Makes sense, thanks for catching this bug.