Method length

crates/vm/src/protocol/sequence.rs:146–153

(self, vm: &VirtualMachine)

    }

    pub fn length(self, vm: &VirtualMachine) -> PyResult<usize> {
        self.length_opt(vm).ok_or_else(|| {
            vm.new_type_error(format!(
                "'{}' is not a sequence or has no len()",
                self.obj.class()
            ))
        })?
    }

    pub fn concat(self, other: &PyObject, vm: &VirtualMachine) -> PyResult {
        if let Some(f) = self.slots().concat.load() {