UsageError: Cell magic %%py5draw not found.

[yourpalmark]

Hello... new to py5, so hopefully this is a simple issue to fix.

I've installed py5 via pip in a conda environment.
My intention is to use this in Jupyter notebooks.
py5 works fine without using cell magic commands. It opens up a new window showing the rendering or animation, etc.
So, to me that means py5 is installed fine.
But when I add %%py5draw to the top of a cell, I get the following error:

UsageError: Cell magic %%py5draw not found.

The %%py5draw follows the p5 imports:

import py5_tools
import py5

Any thought on how to debug this issue?

Note:
I have added JAVA_TOOL_OPTIONS: --enable-native-access=ALL-UNNAMED to my conda environment so Java starts up with this option. I was getting WARNINGs without:

WARNING: A restricted method in java.lang.System has been called
WARNING: java.lang.System::load has been called by org.jpype.JPypeContext in an unnamed module
WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
WARNING: Restricted methods will be blocked in a future release unless native access is enabled

I was hoping addressing the WARNINGs would fix the magic command issue, but unfortunately no.

Also, in the Jupyter debug window, I see py5_tools.magics, py5_tools.magics.drawing, and py5_tools.magics.utilin the Kernal Sources. So they seem to be available.

Thanks!

[yourpalmark]

And I missed a basic step...

Adding %load_ext py5

[hx2A]

And I missed a basic step...

Adding %load_ext py5

Yes,you are correct. Don't worry about it, I forget to type that command sometimes also.

The py5 magic documentation is available here:

https://py5coding.org/tutorials/jupyter_notebook_magic_and_special_features.html

Jupyter notebook magics cannot be available by default because they are not really Python code and they might trip people up somehow if I were to silently enable them when you import py5 from a Jupyter notebook.

@yourpalmark , thank you for your interest in py5 and for stopping by to open a discussion. If you need help with anything else in the future, let us know!

[yourpalmark]

Thanks @hx2A... and thanks for the awesome project!

Quick question while I've got you and without creating a whole separate thread...

My first renderings using the magic commands seem scaled incorrectly:

Any suggestions?

[hx2A]

Any suggestions?

I just tried the first one and I did not get the same results. What is your operating system? Is there any display or pixel scaling? If you have OSX, what is the pixel density? If it is Windows, is there a 200% scale in your display settings? If so, can you try temporarily changing it to 100%?

This is probably a bug.

[hx2A]

@yourpalmark I have pushed a fix for this and it will be in the next release. My goal is to do one release in December around the holidays.

[yourpalmark]

Macbook Pro
Built-in Liquid Retina XDR Display: 16-inch (3456 × 2234)
Apple XDR Display (P3-1600 nits)

Shouldn't be any pixel scaling.

Let me know if there's anything I can do to help you debug this.

[hx2A]

Thank you @yourpalmark , I just tested this on my Mac laptop and was able to reproduce the problem. I opened a bug #711 .

[hx2A]

These Mac machines have retina displays with 2x the pixels and in some places Processing and py5 need to adjust for this.

[yourpalmark]

@hx2A is there a workaround via code to scale the content? Otherwise, I'll wait for the fix.

[hx2A]

I would consider using py5.scale(0.5) at the beginning of the code. That might do the trick.

[yourpalmark]

That works! Thanks again!

[yourpalmark]

@hx2A is there a Discord group or something where we can chat? I hate hijacking this thread with lots of topics, but I guess its better than creating a lot of different "questions".

"Of course, there’s more to py5 than static Sketches. The py5 magics will support animated Sketches as well."

This seems to imply that animations can be embedded in a notebook cell via the magic commands rather than creating a separate popup. Am I misunderstanding? The example doesn't use a magic command so just pops up a window. But I don't see an example using the magic commands that features an animation. Is there a way to embed an animation in a cell?

[hx2A]

This seems to imply that animations can be embedded in a notebook cell via the magic commands rather than creating a separate popup. Am I misunderstanding? The example doesn't use a magic command so just pops up a window. But I don't see an example using the magic commands that features an animation. Is there a way to embed an animation in a cell?

Hmmm, that's a poorly written sentence. I'll update that. That sentence would be more accurately:

Of course, there’s more to py5 than static Sketches. Py5 will support animated Sketches as well.

In the past there was a "Sketch Portal" that could embed a running Sketch in a Jupyter notebook cell's output. But the code that did that was complex and broke when a Jupyter notebook update changed how the widgets worked. And although it was complicated getting it to work it was more of a novelty than a practical feature. I do have an idea for how to fix it but it is not a priority right now.

The poorly written sentence was probably written when the Sketch Portal was still working and was included in that documentation page. After I removed it from the docs I overlooked changing that sentence.

[hx2A]

is there a Discord group or something where we can chat? I hate hijacking this thread with lots of topics, but I guess its better than creating a lot of different "questions".

There is also the Processing Discourse but you can reach me faster over here. It is fine to have discussions here.

[villares]

@yourpalmark discussions here are fine. And feel free to open new topics if you feel like it.