Empty template for nbsphinx_input_prompt and nbsphinx_output_prompt lead to TypeError: not all arguments converted during string formatting

[1kastner]

Describe the bug

In my documentation, my idea was to hide the prompts. I wanted to be clever and just use an empty template for nbsphinx_input_prompt and nbsphinx_output_prompt. However, this lead to the following exception: TypeError: not all arguments converted during string formatting.

How to Reproduce

nbsphinx_input_prompt =nbsphinx_output_prompt = ""

Expected behavior

Maybe the filling of the variable could be more forgiving? So %s is only inserted in the template if such a variable is available in the template in the first place? I think this is better than tempering with HTML and CSS.

Your project

not applicable

Screenshots

No response

OS

Win

Python version

3.10

Sphinx version

5.1

Sphinx extensions

No response

Extra tools

No response

Additional context

No response

[1kastner]

This was meant to be posted at nbsphinx, somehow I ended up in the wrong tab.

[mgeier]

There are already some issues/PRs about this topic, feel free to chime in:

spatialaudio/nbsphinx#131
spatialaudio/nbsphinx#185
spatialaudio/nbsphinx#442
spatialaudio/nbsphinx#446