VS Code Python Eval

Evaluate Python code in selected text and replace it with the result, inspired by vim-evalvis.

Features

• Evaluate Python selections: Select Python code and execute it, replacing the selection with the result
• Multi-cursor support: Works with multiple selections simultaneously
• Single line expressions: Automatically wraps single-line selections with print() for easy evaluation
• Multi-line scripts: Executes multi-line code blocks and captures their output
• Host Python execution: Uses system Python (not project's .venv) for consistent evaluation
• Configurable imports: Add default imports that are available in every execution

Usage

1. Select Python code in any editor
2. Press Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (Mac)
3. The selection will be replaced with the execution result

Examples

Single line expression:

len("hello")  # Select this and evaluate → 5

Multi-line script:

for i in range(3):
    print(f"Hello {i}")
# Select this and evaluate → Hello 0\nHello 1\nHello 2

With default imports:

math.pi * 2  # Works if math is in default imports → 6.283185307179586

Configuration

pythonEval.pythonPath

• Type: string
• Default: "python"
• Scope: machine
• Description: Path to Python executable. Uses system Python by default, avoiding project virtual environments.

pythonEval.defaultImports

• Type: array
• Default:

  [
    "import math",
    "import os", 
    "import sys",
    "import json",
    "import datetime",
    "from datetime import datetime, timedelta"
  ]
  

• Description: Default imports available in every execution.

Key Bindings

You can customize the key binding in VS Code's Keyboard Shortcuts settings.

Installation

1. Install from VS Code Marketplace
2. Or install from VSIX: code --install-extension vscode-eval-python-0.0.1.vsix

Requirements

• Python installed on your system
• The Python executable must be accessible from PATH or configured in settings

Extension Settings

This extension contributes the following settings:

• pythonEval.pythonPath: Path to Python executable
• pythonEval.defaultImports: Array of default import statements

Known Issues

• Execution timeout is set to 10 seconds
• Uses system Python to avoid virtual environment conflicts

Release Notes

0.0.1

Initial release of VS Code Python Eval

• Basic Python code evaluation
• Multi-cursor support
• Configurable Python path and default imports
• Single-line expression and multi-line script support