Plotly [.py] plots not rendering in Positron

[tenFnAN]

I mentioned a similar issue on macOS in another thread:
https://github.com/posit-dev/positron/discussions/6009#discussioncomment-12865496
Here, I’d like to mention that I’m experiencing the same issue, but this time on Windows.

I’m trying to create some visualizations using Plotly, for example:

However, as a result, the console gets stuck — I can wait indefinitely without any response.

What’s more, today I left the session open to see what would happen if I kept Positron running with the code executed. Trust me, after a few hours, my laptop completely froze and I was forced to restart it manually.

It's worth mentioning that other plotting libraries, such as matplotlib and seaborn, work fine.

Then I downgraded to plotly==5.24.1, but the result remained the same.

I'm using the following version:

Positron Version: 2025.01.0 (system setup) build 159 Code - OSS Version: 1.95.0 Commit: bc8820be811f8697ae06e8fda469be39b5fd0f16 Date: 2025-01-09T23:34:24.616Z Electron: 32.2.1 Chromium: 128.0.6613.186 Node.js: 20.18.0 V8: 12.8.374.38-electron.0 OS: Windows_NT x64 10.0.26100

Fortunately, everything works as expected when using Positron-2024.09.0-45-Setup.

Any suggestions : ) ?

[juliasilge]

I am so sorry you are experiencing this! I believe you are running into:

• Newest plotly (6.0.0) doesn't work in Positron #6154
• freeze when rendering plotly with Python 3.12 #6033

These are both slotted to be worked on right now, so we will keep you in the loop on any followup questions we have.

[nstrayer]

Hi @tenFnAN ,
Can you print out the python version you're running?

import sys
print(f"Python version: {sys.version}")

Also can you provide a minimal example? Having trouble reproducing and want to make sure i've got all the variables correct.

[tenFnAN]

print(f"Python version: {sys.version}")
Python version: 3.10.15 (main, Oct 16 2024, 00:13:37) [MSC v.1929 64 bit (AMD64)]

Positron Version: 2025.01.0 (system setup) build 159
Code - OSS Version: 1.95.0
Commit: bc8820b
Date: 2025-01-09T23:34:24.616Z
Electron: 32.2.1
Chromium: 128.0.6613.186
Node.js: 20.18.0
V8: 12.8.374.38-electron.0
OS: Windows_NT x64 10.0.26100

import pandas as pd
import numpy as np
import plotly.express as px
np.random.seed(42)
categories = ['A', 'B', 'C', 'D']
df_fake = pd.DataFrame({
   'NAME_C': np.random.choice(categories, 400),
   'n_sets': np.random.poisson(lam=10, size=400) + np.random.randn(400)
}) 
px.box(df_fake, x='NAME_C', y='n_sets', title=" ")

[nstrayer]

Hmm. I'm on a mac but using the same code stuff works just fine.

This is 2025.04.0 as installed this morning.
Can you try updating your positron install to the latest?

[tenFnAN]

I’m still experiencing the same issue.

[nstrayer]

Hmm, must be a windows thing then. Let me see if I can find someone with an available windows machine to test.