Styjun

some use is inputting bids on an item and they have a specific buyer number.i can only loop it for bidding on one item.please help me how could i start the program again by asking user in the end if he want to look for another item.

 item_byer=(input("enter the item number 
you want to buy:"))
k=0
for e in (bids_1):
if e==item_byer:
print("item is founded")
break
else:
 print("not founded")
k+=1
index_1=(bids_1.index(item_byer))
price=(bids_1[(index_1)+2])
description=(bids_1[(index_1)+1])
print("the price of the item 
is,",price)
bids=0
bids=price
print("if you want to enter a bid 
please enter this word,bid()")
def bid():
global bids
buyer_num=input("enter your buyer 
number!")
highest=input("enter the bid you want 
to put on this. make sure it is greater 
than previous")
a=0
while int(bids)>int(highest):
 print("bids cannot be transfered it 
should be greater than current 
 highest")
 highest=input("enter your bid again")
 a+=1
 if (bids)<(highest):
 print("bid accepted")
 highest==bids
 print("the current highest bid 
 is",highest)
 bids=highest
 else: 
 print("bid denied it should be 
 greater than the previous")
 quit
 biding=input("if you want to enter a 
 bid enter yes ")
 if biding=="yes":
 bid()
 choice=input("if you want to input 
 another item press yes")

Since there are so many things wrong with that but sticking to your originally asked question: how could i start the program again by asking user in the end if he want to look for another item.

You could put your working code in a loop and take user input in the end, perhaps:

bids_1 = ['some', 'list', 'of', 'OP']

while True:
 item_ = input("enter the item number you want to buy: ")
 if item_ in bids_1:
 print("item is found")
 else:
 print("item not found")
 userInp = input("Do you want to check for another item? Press Y to continue: ")
 if userInp.upper() != 'Y':
 break