Method from_exc_info

src/_pytest/_code/code.py:469–493

Return an ExceptionInfo for an existing exc_info tuple. .. warning:: Experimental API :param exprinfo: A text string helping to determine if we should strip ``AssertionError`` from the output. Defaults to the exception message/``__st

(
        cls,
        exc_info: Tuple[Type[E], E, TracebackType],
        exprinfo: Optional[str] = None,
    )

    @classmethod
    def from_exc_info(
        cls,
        exc_info: Tuple[Type[E], E, TracebackType],
        exprinfo: Optional[str] = None,
    ) -> "ExceptionInfo[E]":
        """Return an ExceptionInfo for an existing exc_info tuple.

        .. warning::

            Experimental API

        :param exprinfo:
            A text string helping to determine if we should strip
            ``AssertionError`` from the output. Defaults to the exception
            message/``__str__()``.
        """
        _striptext = ""
        if exprinfo is None and isinstance(exc_info[1], AssertionError):
            exprinfo = getattr(exc_info[1], "msg", None)
            if exprinfo is None:
                exprinfo = saferepr(exc_info[1])
            if exprinfo and exprinfo.startswith(cls._assert_start_repr):
                _striptext = "AssertionError: "

        return cls(exc_info, _striptext, _ispytest=True)

    @classmethod
    def from_current(