Fancy Barcodes

#!/usr/local/bin/python3.7
# -*- coding: utf-8 -*import
import re

count = int(input())

for _ in range(count):
    text = input()
    regex = r'(@[#]+)(?P<barcode>[A-Z]{1}[a-zA-Z0-9]{4,}[A-Z]{1})(@[#]+)'
    match = re.search(regex, text)
    if not match:
        print('Invalid barcode')
    else:
        barcode = match.group('barcode')
        group = ''
        for x in barcode:
            if x.isdigit():
                group += x
        if group:
            print(f'Product group: {group}')
        else:
            print(f'Product group: 00')