part07-18_own_programming_language can't pass Running tests

[muyy7879]

I have complete part7-18 ,which is "own_programming_language"task, a very enthralling and challenging task, it takes me a few hours to accomplish it, and it seems running correctly cause all the answer it return are right( as same as that in the example),but when I run my code with TMC, it takes so much long time and can't return a result, just like:

just like this for a few hours, I can't solve it by my self and I have no idea about what's wrong, if you can help me with it, I'll be so much appreciate cause I will got all my task done 100%,all of them!
anyway, this is my code:

Write your solution here

import string
dic = {character: 0 for character in string.ascii_uppercase}

output=[]
newbegin=0

def run(order:list):
sign=1
while sign:
sign=itera(order,begin=newbegin)
return output

def itera(order:list,begin):
global newbegin
for i in range(begin,len(order)):
order_list=order[i].split(" ") #每一行命令的数组
act=order_list[0] #取出命令

    if act in["MOV" ,"ADD","SUB" ,"MUL"]: 
        var=order_list[1]
        val = int(dic[order_list[2]]) if order_list[2] in string.ascii_uppercase else int(order_list[2])
        
        if act=="MOV": #MOV [variable] [value]
            dic[var]=val
        elif act=="ADD": #ADD [variable] [value] 
            dic[var]+=val
        elif act=="SUB": #SUB [variable] [value]
            dic[var]-=val
        elif act=="MUL": #MUL [variable] [value]
            dic[var]*=val

    elif act=="IF": #IF [condition] JUMP [location]
        com_1=order_list[1] # 前者
        com1=int(dic[com_1]) # 前者值
        express=order_list[2] #比较符号
        com_2=order_list[3] #后者
        com2 = int(dic[com_2]) if com_2 in string.ascii_uppercase else int(com_2)

        if express=="==" and com1==com2:
            act="JUMP"
        elif express=="!=" and com1!=com2:
            act="JUMP"
        elif express=="<" and com1<com2:
            act="JUMP"
        elif express=="<=" and com1<=com2:
            act="JUMP"
        elif express==">" and com1>com2:
            act="JUMP"
        elif express==">=" and com1>=com2:
            act="JUMP"
        else: #条件不满足，下一条命令
            pass

    elif act=="PRINT": #PRINT [value]
        va=order_list[1]
        pva = dic[va] if va in string.ascii_uppercase else int(va)
        output.append(pva)

    elif act=="END":
        return 0

    else:
        pass

    if act=="JUMP": #JUMP [location]
        index=order_list.index("JUMP") #定位
        loca=order_list[index+1]+":" #取出跳的位置 
        for k in range(len(order)):
            if order[k] == loca:
                global newbegin
                newbegin=k+1 #定义重新循环的位置
                return 1
        break

    if i==len(order)-1: #不是END的最后一行，且没有跳出循环：
        return 0