Method union

crates/vm/src/builtins/set.rs:246–253

(&self, other: ArgIterable, vm: &VirtualMachine)

    }

    pub(super) fn union(&self, other: ArgIterable, vm: &VirtualMachine) -> PyResult<Self> {
        let set = self.clone();
        for item in other.iter(vm)? {
            set.add(item?, vm)?;
        }

        Ok(set)
    }

    pub(super) fn intersection(&self, other: ArgIterable, vm: &VirtualMachine) -> PyResult<Self> {
        let set = Self::default();