🐛 Bug
I noticed that papermill prepends the statement "Starting Kernel..." to the top of the output notebook. This occurs both when declaring an output notebook and when piping to stdout.
papermill -k xpython --no-progress-bar --log-level ERROR /path/to/qc_bx_stats.ipynb > output.ipynb
# or #
papermill -k xpython --no-progress-bar --log-level ERROR /path/to/qc_bx_stats.ipynb output.ipynb
And the top of the output notebook looks like:
Starting kernel...
{
"cells": [
{
"cell_type": "markdown",
"id": "a15b719a",
"metadata": {
"tags": [
"papermill-error-cell-tag"
]
},
"source": [
"<span style=\"color:red; font-family:Helvetica Neue, Helvetica, Arial, sans-serif; font-size:2em;\">An Exception was encountered at '<a href=\"#papermill-error-cell\">In [4]</a>'.</span>"
]
},
{
"cell_type": "markdown",
"id": "716e29e7",
"metadata": {
"papermill": {
"duration": 0.000372,
"end_time": "2026-07-10T18:28:39.105932+00:00",
"exception": false,
"start_time": "2026-07-10T18:28:39.105560+00:00",
"status": "completed"
},
"tags": []
},
"source": [
....
🐛 Bug
I noticed that papermill prepends the statement "Starting Kernel..." to the top of the output notebook. This occurs both when declaring an output notebook and when piping to stdout.
And the top of the output notebook looks like: