Numpy import error within conda environment.

[ubaldot]

I am using Vim9 with a LSP client that works very well, but it is giving me headaches with pyright.

The lsp is configured according to the following:

  var pyright_config = {
    settings: {
      python: {
        analysis: {
          autoSearchPaths: true,
          diagnosticMode: "openFilesOnly",
          useLibraryCodeForTypes: true
        },
        pythonPath: '/opt/homebrew/Caskroom/miniconda/base/envs/myenv/bin/python'
      },
    },
  }

...

    {
      name: "pyright",
      filetype: ["python"],
      path: "pyright-langserver",
      workspaceConfig: pyright_config,
      rootSearch: [
        "pyproject.toml",
        "setup.py",
        "setup.cfg",
        "requirements.txt",
        "Pipfile",
        "pyrightconfig.json",
        ".git"
      ],
      args: ['--stdio']
    },

To reproduce:

import numpy as np
import matplotlib.pyplot as plt

a = np.array([1, 2, 3])

Yet, I have Import error when I import a standard library such as numpy.

I am using numpy 2.3.1, python 3.12.12. Note that the version of numpy is shipped with stubs.
I checked that numpy is installed and that I am in the correct conda venv.

[erictraut]

Are you activating your python environment prior to running the editor?

Here's some documentation about import resolutions that you might find useful.

[ubaldot]

I started the editor from the correct venv and I verified from the editor that the underlying venv ic correct.

I actually went through the guide and I tried the following:

Attempt 1:

  var pyright_config = {
    settings: {
      python: {
        analysis: {
          autoSearchPaths: true,
          diagnosticMode: "openFilesOnly",
        },
        pythonPath: '/opt/homebrew/Caskroom/miniconda/base/envs/myenv/bin/python'
      },
      verboseOutput: true
    },
  }

Attempt 2:

  var pyright_config = {
    settings: {
      python: {
        analysis: {
          autoSearchPaths: true,
          diagnosticMode: "openFilesOnly",
        },
        venvPath: '/opt/homebrew/Caskroom/miniconda/base/envs,
        venv: 'myenv'
      },
      verboseOutput: true
    },
  }

Attempt 3:

  var pyright_config = {
    settings: {
      python: {
        analysis: {
          autoSearchPaths: true,
          diagnosticMode: "openFilesOnly",
          extraPaths: [ '/opt/homebrew/Caskroom/miniconda/base/envs']
        },
      },
      verboseOutput: true
    },
  }

None of them worked.

EDIT: Attempt 1 works on WSL, but it does not work on macos.

[ubaldot]

Update.

On macos, I created a new conda environment called py312 and by running pyright --verbose obtaining the following:

No include entries specified; assuming /Users/ubaldot/Documents
Auto-excluding **/node_modules
Auto-excluding **/__pycache__
Auto-excluding **/.*
Assuming Python version 3.13.5.final.0
Execution environment: python
  Extra paths:
    (none)
  Python version: 3.13.5.final.0
  Python platform: Darwin
  Search paths:
    /opt/homebrew/Caskroom/miniconda/base/envs/py312/lib/python3.12/site-packages/pyright/dist/dist/typeshed-fallback/stdlib
    /Users/ubaldot/Documents
    /Users/ubaldot/Documents/typings
    /opt/homebrew/Caskroom/miniconda/base/envs/py312/lib/python3.12/site-packages/pyright/dist/dist/typeshed-fallback/stubs/...
    /opt/homebrew/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13
    /opt/homebrew/Cellar/python@3.13/3.13.5/Frameworks/Python.framework/Versions/3.13/lib/python3.13/lib-dynload
    /opt/homebrew/lib/python3.13/site-packages
Found 656 source files
Could not import 'numpy' in file '/Users/ubaldot/Documents/H_inf.py'
Could not import 'scipy.linalg' in file '/Users/ubaldot/Documents/H_inf.py'
Could not import 'annotationlib' in file '/opt/homebrew/Caskroom/miniconda/base/envs/py312/lib/python3.12/site-packages/pyright/dist/dist/typeshed-fallback/stdlib/typing_extensions.pyi'

I have updated the config entries pythonPath, venvPath and venv with the correct values, and things still don't work.

It surprises me that assume Python version 3.13.5.final.0 when we are inside a conda virtual environment and which python returns /opt/homebrew/Caskroom/miniconda/base/envs/py312/bin/python which is the version 3.12.

[ubaldot]

This looks like a bug that only seems to happen when using macos. Shall I open an issue so that someone could pick it up?

[erictraut]

This is unlikely to be a bug in pyright.

You mentioned that you're using the venvPath and venv configuration method. This is not recommended. Instead, you should either use python.pythonPath or activate your Python environment prior to starting pyright so it can discover it by shell invoking python or python3.

[ubaldot]

I have actually tried all the methods that you are describing. In-fact with the python.pythonPath approach it works well on Windows and in Linux, but on macos.