Working on Python program and it runs but got this error message. Want to know what modifications need to be made for it to run smoothly. Here's the code, error, and program description.

Zip Code.?? . DAPython,Zip Code.py (3.6.4) File Edit Format Run Options Window custzip0 custAge 0 custZip 0 custAge 0 Items 0 validIt1 Help Custage0 Items300 ItemsOlder0 ItemsInzip 0 Items 1notherzips = 0 Store21p 71209 ZIP MSG "Enter the zip code:" AGE MSG = "Enter the custome r age : " ITEM MSG "Enter number of items: def validzipCode ): global custzip while custzip 99999: print("Please enter a valid zip code") custzipinput("please enter a valid zip code"y def validcustAge global custAge cuscage 10s. hile cust print("Please enter a valid custoner age") cus tAge = input("Please enter, your age") ef validitems : giobal validIt, Items attempts-0 limit 2 validIt1 while (Items