launch.json

{
    "run": [
        {
            "method": "shell.start"
        },
        {
            "method": "shell.enter",
            "params": {
                "message": "{{self.config.activate_command}}",
                "on": [{
                    "event": null,
                    "return": true
                }]
            }
        },
        {
            "method": "shell.enter",
            "params": {
                "message": "python -m langflow",
                "on": [{
                    "event": "/Access (http[0-9\/.:]+)/",
                    "return": "{{event.matches[0][1]}}"
                }]
            }
        },
        {
            "method": "browser.open",
            "params": {
                "uri": "{{input}}",
                "target": "_blank"
            }
        },
        {
            "method": "process.wait"
        }
    ]
}