Method syspathinsert

src/_pytest/pytester.py:892–903

Prepend a directory to sys.path, defaults to :attr:`path`. This is undone automatically when this object dies at the end of each test.

(
        self, path: Optional[Union[str, "os.PathLike[str]"]] = None
    )

        return self._makefile(".txt", args, kwargs)

    def syspathinsert(
        self, path: Optional[Union[str, "os.PathLike[str]"]] = None
    ) -> None:
        """Prepend a directory to sys.path, defaults to :attr:`path`.

        This is undone automatically when this object dies at the end of each
        test.
        """
        if path is None:
            path = self.path

        self._monkeypatch.syspath_prepend(str(path))

    def mkdir(self, name: str) -> Path:
        """Create a new (sub)directory."""