Method get_item_opt

crates/vm/src/builtins/dict.rs:659–676

(
        &self,
        key: &K,
        vm: &VirtualMachine,
    )

    }

    pub fn get_item_opt<K: DictKey + ?Sized>(
        &self,
        key: &K,
        vm: &VirtualMachine,
    ) -> PyResult<Option<PyObjectRef>> {
        if self.exact_dict(vm) {
            self.entries.get(vm, key)
            // FIXME: check __missing__?
        } else {
            match self.as_object().get_item(key, vm) {
                Ok(value) => Ok(Some(value)),
                Err(e) if e.fast_isinstance(vm.ctx.exceptions.key_error) => {
                    self.missing_opt(key, vm)
                }
                Err(e) => Err(e),
            }
        }
    }

    /// Return a cached-entry hint for exact dict fast paths.
    pub(crate) fn hint_for_key<K: DictKey + ?Sized>(