[Python] How to prevent vscode from importing global python env site-packages when using pixi...

situation

• 
  I created a new python project with pixi venv.
  I have this isolated venv, including python.
  I installed pandas etc.
  I didnt install plotly etc.
  
  
• 
  I have python installed globally.
  The global python environment has plotly installed.
  

problem

• 
  Now I open the project in vscode.
  
  
• 
  If I try to import plotly.
  It wont show any error.
  If I click into it, it goes to the global python env site-packages.
  
  
• 
  Even If I try to import pandas.
  Same thing happens.
  
  
• 
  
  

desire

• I want vscode to truly isolate the venv.
  Stop it from importing from the global python site-packages.
  Just show an error if that happens in my code.
  I cant.

attempts

• I tried with PYTHONNOUSERSITE=1 wont work.
  • wont work for vscode ide
  • but seems working in terminal (but this is not enough)
• include-system-site-packages = false doesnt exist for pixi.

compare

• if i create a project with .venv, no such problem, its truly isolated.
• if i create a project with .conda, some project has no such problem, (the base env), but others seems have the same problem
• if i create a project with .pixi, have the problem

diagnostics


To show where they are imported:

import sys
import os

# Print the executable python thinks it's running
print("--- Python Executable ---")
print(sys.executable)
print("-" * 25)

# Print all the paths python will search for modules
print("\n--- Module Search Paths (sys.path) ---")
for path in sys.path:
print(path)
print("-" * 25)

# Check if the PYTHONPATH variable is set
print("\n--- PYTHONPATH Environment Variable ---")
py_path = os.environ.get('PYTHONPATH')
if py_path:
print(py_path.replace(':', '\n')) # Use ';' for Windows if needed
else:
print("PYTHONPATH is not set.")
print("-" * 25)

# Try the import and see where it comes from

try:
import pandas
print("\n--- 'pandas' was found here: ---")
print(pandas.__file__)
except ImportError:
print("\n--- 'pandas' could not be imported. ---")

try:
import plotly
print("\n--- 'plotly' was found here: ---")
print(plotly.__file__)
except ImportError:
print("\n--- 'plotly' could not be imported. ---")

try:
import torch
print("\n--- 'torch' was found here: ---")
print(torch.__file__)
except ImportError:
print("\n--- 'torch' could not be imported. ---")



Output:

D:\usp\uhpsj\study\build_llm_wsp\build_llm>D:/usp/uhpsj/study/build_llm_wsp/build_llm/.pixi/envs/default/python.exe d:/usp/uhpsj/study/build_llm_wsp/build_llm/src/build_llm_demo/_demo/d2.py
--- Python Executable ---
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\python.exe
-------------------------

--- Module Search Paths (sys.path) ---
d:\usp\uhpsj\study\build_llm_wsp\build_llm\src\build_llm_demo\_demo
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\python311.zip
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\DLLs
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\Lib
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default
C:\Users\nshln\AppData\Roaming\Python\Python311\site-packages
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\Lib\site-packages
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\Lib\site-packages\win32
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\Lib\site-packages\win32\lib
D:\usp\uhpsj\study\build_llm_wsp\build_llm\.pixi\envs\default\Lib\site-packages\Pythonwin
-------------------------

--- PYTHONPATH Environment Variable ---
PYTHONPATH is not set.
-------------------------

--- 'pandas' was found here: ---
C:\Users\nshln\AppData\Roaming\Python\Python311\site-packages\pandas\__init__.py

--- 'plotly' was found here: ---
C:\Users\nshln\AppData\Roaming\Python\Python311\site-packages\plotly\__init__.py

--- 'torch' was found here: ---
C:\Users\nshln\AppData\Roaming\Python\Python311\site-packages\torch\__init__.py


pixi.toml packages

[workspace]
authors = ["norlz <norlz@gitkra.com>"]
channels = ["conda-forge"]
name = "build-llm-demo"
platforms = ["win-64"]
version = "0.1.0"

[tasks]

[system-requirements]
cuda = "12.0"

[dependencies]
python = "3.11.*"
pandas = "<=2.1.4"
pydantic-settings = ">=2.9.1,<3"
ruff = ">=0.12.0,<0.13"
pyright = ">=1.1.402,<2"
pytest = ">=8.4.1,<9"
pytorch-gpu = "*"
cuda-version = "12.6.*"

[pypi-dependencies]
fastapi = { version = ">=0.115.13, <0.116", extras = ["standard"] }
uvicorn = { version = ">=0.34.3, <0.35", extras = ["standard"] }
gunicorn = ">=23.0.0, <24"

Continue reading...