payment.py

def send_request_webgate(amount, description, email, mobile, additional_data=''):
    client = Client(WSDL_URL)
    if additional_data:
        result = client.service.PaymentRequestWithExtra(
            ZARINPAL_MERCAHNTID,
            amount,
            description,
            additional_data,
            email,
            mobile,
            ZARINPAL_REDIRECT_URL
        )

zarinpal_with_extra.py

marketer_percent = pixel.marketer.percent
marketer_zarinpal_wallet = pixel.marketer.zarinpal_wallet
marketer_share = int(pixel.amount * marketer_percent / 100)
mhm5000_share = int(pixel.amount * ( 100 - marketer_percent ) / 100)
data = {
            "Wages": {
                "ZP.23751.1": {
                    "Amount": mhm5000_share,
                    "Description": "سهم مدیر"
                },
                marketer_zarinpal_wallet: {
                    "Amount": marketer_share,
                    "Description": "سهم بازاریاب"
                }
            }
        }

additional_data = json.dumps(data)