Issue
I am writing a git filter for Jupyter notebook output and metadata and I would like to learn more about the metadata.language_info.codemirror_mode
key so that I can make an informed decision about how to handle it in the filter. A good answer will explain...
- How this value is used by the notebook
- What valid values it can be set to (some examples)
Relevant meta question: To what extent are "What does [thing] do" questions OK to ask?
What I have found so far
The nbformat documentation has the following description: "The name of the codemirror mode to use [optional]". This doesn't say what names are possible...
The above page links to the official JSON schema for the Jupyter Notebook format which has the following:
"codemirror_mode": { "description": "The codemirror mode to use for code in this language.", "oneOf": [{ "type": "string" }, { "type": "object" }] }
Not sure what the
string
orobject
is supposed to be...Searching "codemirror" leads me to the CodeMirror user manual and reference guide which as this to say about modes
mode (string or object)
This matches! That's great!
The mode to use. When not given, this will default to the first mode that was loaded. It may be a string, which either simply names the mode or is a MIME type associated with the mode. Alternatively, it may be an object containing configuration options for the mode, with a name property that names the mode (for example {name: "javascript", json: true}). The demo pages for each mode contain information about what configuration parameters the mode supports. You can ask CodeMirror which modes and MIME types are loaded with the CodeMirror.listModes and CodeMirror.listMIMEs functions.
Still not sure exactly what is permissible and how it affects notebooks.
Solution
The codemirror_mode
key in Jupyter notebooks is used for syntax highlighting: it determines the styling (color, font, etc.) of various elements of the code (like keywords, strings, comments) based on the language or format.
And it assists in code editing by providing language-specific features like auto-indentation, bracket matching, and code folding.
Valid values for codemirror_mode
are one of those two:
String: A simple string that names the mode or specifies a MIME type associated with the mode.
Example:"python"
,"text/x-c++src"
,"application/json"
(see "CodeMirror language modes").Object: An object with configuration options for the mode, including a
name
property that names the mode and other optional settings.
Example:{name: "javascript", json: true}
for JSON data in JavaScript.
How it affects notebooks:
- When a specific
codemirror_mode
is set, it tailors the code cell's behavior to the specified language or format, improving readability and ease of coding. - It does not affect the execution of the code, but only enhances the user interface and interaction.
Answered By - VonC
0 comments:
Post a Comment
Note: Only a member of this blog may post a comment.