rfid shopping basket

basket.py

from urllib import urlopen

url = "http://data.sparkfun.com/input/7JAm8EYLolf0yYZ2xolq?private_key=mzVy8NMJp4TyX1j0mVRK&rfid_code=" #GET request


def checkIfAlreadyPresent(arr,item):
	for i in arr:
		if item == i:
			return True
	return False
	
arr = []
done = False

while(not done):
	
	item = int(input("Enter item code"))
	
	if item == -1:
		done = True
		for i in arr:
			sendResponse = url + str(i)
			result = urlopen(sendResponse).read()
			print(result)
		break
	
	if(checkIfAlreadyPresent(arr,item)):
		arr.remove(item)
	else:
		arr.append(item)
	print(arr)