No passing R and Python object within reticulate session in Positron

[ntluong95]

System details:

Positron and OS details:

Positron Version: 2024.11.0 (system setup) build 116 Code - OSS Version: 1.93.0 Commit: 8b1688ababfa228db515a739050c466f3bb3089f Date: 2024-10-28T02:47:45.218Z Electron: 30.4.0 Chromium: 124.0.6367.243 Node.js: 20.15.1 V8: 12.4.254.20-electron.0 OS: Windows_NT x64 10.0.22621

Interpreter details:

R 4.3.2 Python 3.12.4

Describe the issue:

It is unable to access R object through r.object syntax and python object through py$object syntax in Positron

Steps to reproduce the issue:

1. Create a new quarto document
2. Create a venv through uv package or whatever way

uv init --python 3.12.4
uv add ipykernel
uv add pyarrow

3. Run the following code

library(arrow)
library(reticulate)
use_virtualenv(here::here(".venv"))
repl_python()

import pyarrow as pa

set.seed(1234)
nrows <- 10^4
df_random <- data.frame(
  x = rnorm(nrows), 
  y = rnorm(nrows),
  subset = sample(10, nrows, replace = TRUE)
)
tb_random <- arrow_table(df_random)

df_py <- r_to_py(df_random)
tb_py <- r_to_py(tb_random)

r.df_py

r.tb_py 

Expected or desired behavior:

Be able to access the dataframe

Were there any error messages in the UI, Output panel, or Developer Tools console?

Actual output

The object was converted and showed in Environment Pane

[dfalbel]

Thank you for reporting!

This should have been fixed with https://github.com/rstudio/reticulate/pull/1681 Can you try installing the dev version of reticulate and see if the issue persists?

[ntluong95]

I have tried and confirmed that it solved the problem. But I don't know why sometimes I can import pyarrow, sometimes I can't. Not sure if anything need to be done with reticulate or python

[juliasilge]

@dfalbel Should Positron check for the reticulate R package version? We do this in the R extension like so:

https://github.com/posit-dev/positron/blob/1cda237653eaad30a3edc45ff47d90bfa3fac24e/extensions/positron-r/src/commands.ts#L193

[dfalbel]

We do check for a minimum reticulate version here:

https://github.com/posit-dev/positron/blob/3e71716fa4a6ed5e051c835851571f3ff312d73f/extensions/positron-reticulate/src/extension.ts#L220-L221

But still didn't bump it up to fix this specific bug because the new release is not on CRAN yet.