Fancy Barcodes

import re

number_of_barcodes = int(input())
pattern = r"@[#]+([A-Z][a-zA-Z\d]{4,}[A-Z])@[#]+"

for _ in range(number_of_barcodes):
    barcode = input()
    if re.match(pattern, barcode):
        digits = re.findall(r"\d", barcode)
        if digits:
            print(f"Product group: {''.join(digits)}")
        else:
            print("Product group: 00")
    else:
        print("Invalid barcode")