old_contents: __author__ = 'Calvin'
  
  SANDBOX = True
  AIO_SERVICE_URL = 'https://payment.allpay.com.tw/Cashier/AioCheckOut'
  AIO_SANDBOX_SERVICE_URL = 'http://payment-stage.allpay.com.tw/Cashier/AioCheckOut'
  MERCHANT_ID = '2000132'
  HASH_KEY = '5294y06JbISpM5x9'
  HASH_IV = 'v77hoKGq4kWxNNIS'
  # URL Setting.
  RETURN_URL = 'YOUR_RETURN_URL'
  ORDER_RESULT_URL = 'YOUR_ORDER_RESULT_URL'
  PAYMENT_INFO_URL = 'YOUR_PAYMENT_INFO_URL'
  
new_contents: __author__ = 'Calvin'
  
  SANDBOX = True
  
  AIO_SERVICE_URL = 'https://payment.allpay.com.tw/Cashier/AioCheckOut'
  AIO_SANDBOX_SERVICE_URL = 'http://payment-stage.allpay.com.tw/Cashier/AioCheckOut'
  
  MERCHANT_ID = 'YOUR_MERCHANT_ID' if not SANDBOX else '2000132'
  HASH_KEY = 'YOUR_HASH_KEY' if not SANDBOX else '5294y06JbISpM5x9'
  HASH_IV = 'YOUR_HASH_IV' if not SANDBOX else 'v77hoKGq4kWxNNIS'
  
  # URL Setting.
  RETURN_URL = 'YOUR_RETURN_URL'
  ORDER_RESULT_URL = 'YOUR_ORDER_RESULT_URL'
  PAYMENT_INFO_URL = 'YOUR_PAYMENT_INFO_URL'
  
subject: update setting.py