how to get rid of jupytext_version in the notebook metadata

Hey there

as the tile has it, my use case would require to get rid of jupytext_version in my notebooks metadata

for some time I have been successfully running in a mode where language_info is stripped from said notebook metadata (actually it’s kind of the same need, differences in the version numbers between the authoring laptop and the runtime testbed creates tend to create headaches 😉

so I have tried to tweak that same setting, but I can’t seem to find the correct wording; I have tried for example this :

notebook_metadata_filter: all,-language_info,-jupyter.jupytext.text_representation.jupytext_version

together with a few variants, but can’t seem to get it right; what am I doing wrong ?

– a jupytext lover 😃

[parmentelat]

hi @mwouts, thanks for taking care of this

first thing I want to report is there is an extra " in your first snippet; then end should read

jupytext_version"}}'

instead of

jupytext_version"}"}'

now, when I do run this on a sample notebook, which happens to be in .md format, I observe vast changes that are not what I expected; it does add the metadata filter, but otherwise removes a lot of global metadata; was that intended ?

# checking file is unchanged
$ git diff 01-motivation.md

# running your command
$ jupytext 01-motivation.md --update-metadata '{"jupytext":{"notebook_metadata_filter":"-jupytext.text_representation.jupytext_version"}}'
[jupytext] Reading 01-motivation.md
[jupytext] Updating notebook metadata with '{"jupytext": {"notebook_metadata_filter": "-jupytext.text_representation.jupytext_version"}}'
[jupytext] Writing 01-motivation.md in format md (destination file replaced)

# observing changes
$ git diff 01-motivation.md
diff --git a/notebooks/01-motivation.md b/notebooks/01-motivation.md
index 32fb082..d0d7cb2 100644
--- a/notebooks/01-motivation.md
+++ b/notebooks/01-motivation.md
@@ -1,43 +1,17 @@
 ---
 jupyter:
-  celltoolbar: Slideshow
   jupytext:
     cell_metadata_filter: all
     formats: md
-    notebook_metadata_filter: all,-language_info
+    notebook_metadata_filter: -jupytext.text_representation.jupytext_version
     text_representation:
       extension: .md
       format_name: markdown
       format_version: '1.2'
-      jupytext_version: 1.3.2
   kernelspec:
     display_name: Javascript (Node.js)
     language: javascript
     name: javascript
-  notebookname: motivation
-  rise:
-    autolaunch: true
-    slideNumber: c/t
-    start_slideshow_at: selected
-    theme: sky
-    transition: cube
-  toc:
-    base_numbering: 1
-    nav_menu: {}
-    number_sections: false
-    sideBar: false
-    skip_h1_title: false
-    title_cell: Table of Contents
-    title_sidebar: Contents
-    toc_cell: false
-    toc_position:
-      height: 179px
-      left: 25px
-      top: 134px
-      width: 202.391px
-    toc_section_display: true
-    toc_window_display: true
-  version: '1.0'
 ---

 <div class="licence">
(END)

[parmentelat]

hi; me again 😉

I just realized that I had a setting in ~/.jupyter/notebook_config.py

c.ContentsManager.default_notebook_metadata_filter = "all,-language_info"

because of its name I thought this setting would not affect the notebooks where I had explicitly defined the complete new value ending in -jupytext.text_representation.jupytext_version

so, I cannot yet confirm that this was the root problem, but I did change the default to be in line with what I want, since any impact on all my other notebooks would not matter anyway

hopefully I will be able to confirm in a couple days, I just have too many instances of jupyter servers and notebooks open at that point to be able to be positive