Creating your first extension

Getting Started

Create a folder and place a Python file inside it.

Write Extension Code

import vscode
from vscode import InfoMessage

ext = vscode.Extension(name="Test Extension")

@ext.event
async def on_activate():
    vscode.log(f"The Extension '{ext.name}' has started")

@ext.command()
async def hello_world(ctx):
    return await ctx.show(InfoMessage(f"Hello World from {ext.name}"))

ext.run()

Run the Python File

Execute the Python file. This action will build the necessary files.

Run the Extension

Press F5. This will initiate the extension and open a new VSCode window in development mode.

Test Your Command

• Open the command palette in the development window with Ctrl+P.

  

• Type >Hello World in the command palette.

  

• The popup message should appear in the bottom right corner.