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I just started to use RStudio with Python (up to now everything works) and I wonder if there is a preferred way to run scripts such as my small Test.py containing

import inspect
import os

a = 5
print(a)

print(inspect.currentframe())
os.chdir("C:/.../") # a path, whatever you like
cwd = os.getcwd()
 
# print the current directory
print("Current working directory is:", cwd)

There is an answer for R here but this does not consider Python. I tried the flollowing:

  1. Source (Ctrl + Shift + S) from R-console => R-console is used

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  1. Start Python console using reticulate::repl_python() in R-console => Change from R- to Python-console

enter image description here

  1. Source (Ctrl + Shift + S) from Python-console => Change from Python- to R-console

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It seems, reticulate::repl_python() forces the quit first.

  1. Run lines or a selection using "run" (Ctrl + Enter) => Starts Python-console and stays there

enter image description here

This reference for reticulate and its description did not help: The reticulate package provides a comprehensive set of tools for interoperability between Python and R... Reticulate embeds a Python session within your R session, enabling seamless, high-performance interoperability.

Christoph
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2 Answers2

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In the RStudio IDE there should be a "Source script" button (keyboard shortcut on a Mac: shift-cmd-S) which sources the script.

enter image description here

From the terminal this is then how it looks:

reticulate::source_python('~/Untitled.py')
Valeri Voev
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  • So the idea is to always work within the R environment? The Python console is in most cases unused? What happens in case of debugging, see e.g. [here](https://stackoverflow.com/a/44728031/5784831)? (I could not make debugging work using ipdb. If I execute line by line, it still throws an error `IndexError: list index out of range` when source it also throws an error stating `Error in py_run_file_impl(file, local, convert) : IndexError: list index out of range`) – Christoph Feb 02 '22 at 15:38
  • Hi @Christoph, I am not very familiar with more advanced uses (like debugging) of the RStudio IDE for Python. I am not sure why you have decided for RStudio - are you working with both R and Python? I love the functionality when it comes to R, but for Python projects I very much prefer VScode, where I also think debugging is really excellent. – Valeri Voev Feb 02 '22 at 18:45
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(Too long for a comment. Maybe it helps others and hopefully, everything is correct)

What I understand now, RStudio provides an editor for R (not surprising). When you run Python code within RStudio, there is an R-wrapper for Python translating the code to R.

Thus, RStudio does not switch the editor to a native Python-IDE (which was my expectation) like VScode or others.

What I understand now: If you have projects with Python only, use a Python editor.

Christoph
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