Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
[ Pendulum Effect ] Once per turn: You can target 1 "D/D" monster you control; change its Level to 4, and if you do, it gains 400 ATK and DEF (even if this card leaves the field). ---------------------------------------- [ Monster Effect ] When this card is Pendulum Summoned from the hand, while you control a "D/D" monster other than "D/D Cerberus": You can target 1 Continuous Spell Card in your Graveyard; add it to your hand.
--DDケルベロス
--D/D Cerberus
local s,id=GetID()
function s.initial_effect(c)
	--pendulum summon
	Pendulum.AddProcedure(c)
	--atk/def
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_PZONE)
	e2:SetCountLimit(1)
	e2:SetTarget(s.atktg)
	e2:SetOperation(s.atkop)
	c:RegisterEffect(e2)
	--tohand
	local e3=Effect.CreateEffect(c)
	e3:SetCategory(CATEGORY_TOHAND)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetCondition(s.thcon)
	e3:SetTarget(s.thtg)
	e3:SetOperation(s.thop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_DD}
s.listed_names={id}
function s.filter(c)
	local lv=c:GetLevel()
	return c:IsFaceup() and c:IsSetCard(SET_DD) and lv>0 and lv~=4
end
function s.atktg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) and tc:GetLevel()~=4 then
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_CHANGE_LEVEL)
		e1:SetValue(4)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1)
		local e2=e1:Clone()
		e2:SetCode(EFFECT_UPDATE_ATTACK)
		e2:SetValue(400)
		tc:RegisterEffect(e2)
		local e3=e2:Clone()
		e3:SetCode(EFFECT_UPDATE_DEFENSE)
		tc:RegisterEffect(e3)
	end
end
function s.cfilter(c)
	return c:IsFaceup() and c:IsSetCard(SET_DD) and not c:IsCode(id)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsPendulumSummoned() and c:IsPreviousLocation(LOCATION_HAND)
		and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE,0,1,nil)
end
function s.thfilter(c)
	return c:IsContinuousSpell() and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.thfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.thfilter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,s.thfilter,tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
	end
end