npm run build:py error on Mac

[yiliang114]

Description

Reproduce

1. Git clone this repo
2. npm run bootstrap
3. npm run build

Expected behavior

Context

• JupyterLite version: Version 0.1.2
• Operating System and version: Mac 12.2.1 (21D62)
• Browser and version: Chrome 115.0.5790.170

Browser Output

➜  pyodide-kernel git:(main) ✗ npm run build:py

@jupyterlite/[email protected] build:py

python scripts/generate-wheels-js.py

File "scripts/generate-wheels-js.py", line 16

or shutil.which(f"{cmd}.exe")

^

SyntaxError: invalid syntax

npm ERR! Lifecycle script build:py failed with error:

npm ERR! Error: command failed

npm ERR!   in workspace: @jupyterlite/[email protected]

[yiliang114]

In the Mac environment, It seems that because the python2 is installed by default and cannot be modified, even if the python3 specified running file is used, it seems that it will go into the logic of python2 execution, resulting in syntax errors and unable to run.