Cannot show optional content group: AttributeError: module 'fitz.mupdf' has no attribute 'pdf_array_push_drop' about pymupdf

[julian-smith-artifex-com]

The pdf_array_push_drop bug is fixed in 1.23.24. I'll leave this issue open though until the other questions are understood/answered.

[julian-smith-artifex-com]

Thanks for reporting this. I have a fix in my tree.

[stefaneidelloth]

Thank you. I think this does not make the ocm visible, yet.

I would expect something like

doc.show_ocgs([first_id])

or

doc.set_ocg(first_id, on=True)

But there are no such methods.

=> How to programmatically show a previously hidden ocg (or layer)?

[JorjMcKie]

@stefaneidelloth Please have a look at layer_ui_configs() and set_layer_ui_config(number, action=0).
They get / set the temporary visibility - like a supporting PDF viewer would via its UI.

Close by in that part of the documentation, you will also find ways to make permanent changes.

[stefaneidelloth]

Thanks. As you see in the comments /end of the example, I already tried that. What would be a modified version of the example that works? (I also attached example image files just now.)