Method format_utf8

crates/vm/src/vm/vm_ops.rs:577–579

(&self, obj: &PyObject, format_spec: PyStrRef)

        })
    }
    pub fn format_utf8(&self, obj: &PyObject, format_spec: PyStrRef) -> PyResult<PyRef<PyUtf8Str>> {
        self.format(obj, format_spec)?.try_into_utf8(self)
    }

    pub fn _contains(&self, haystack: &PyObject, needle: &PyObject) -> PyResult<bool> {
        let seq = haystack.sequence_unchecked();