Method from_instance

src/err.rs:261–266

Creates a new PyErr. `obj` must be an Python exception instance, the PyErr will use that instance. If `obj` is a Python exception type object, the PyErr will (lazily) create a new instance of that type. Otherwise, a `TypeError` is created instead.

(py: Python, obj: O)

    /// If `obj` is a Python exception type object, the PyErr will (lazily) create a new instance of that type.
    /// Otherwise, a `TypeError` is created instead.
    pub fn from_instance<O>(py: Python, obj: O) -> PyErr
    where
        O: PythonObject,
    {
        PyErr::from_instance_helper(py, obj.into_object())
    }

    fn from_instance_helper(py: Python, obj: PyObject) -> PyErr {
        if unsafe { ffi::PyExceptionInstance_Check(obj.as_ptr()) } != 0 {