Method _check_url

Lib/webbrowser.py:167–170

Ensures that the URL is safe to pass to subprocesses as a parameter

(url)

    @staticmethod
    def _check_url(url):
        """Ensures that the URL is safe to pass to subprocesses as a parameter"""
        if url and url.lstrip().startswith("-"):
            raise ValueError(f"Invalid URL (leading dash disallowed): {url!r}")


class GenericBrowser(BaseBrowser):