from django.urls import reverse_lazy
from django.utils.translation import ugettext_lazy as _

INSTALLED_APPS = [
    ...
    'saferpay',
]

...
SAFERPAY_APIURL = 'https://test.saferpay.com/api'
SAFERPAY_USERNAME = 'API_XXX'
SAFERPAY_PASSWORD = 'XXX'
SAFERPAY_CUSTOMERID = 'xxxxxx'  # a number
SAFERPAY_TERMINALID = 'xxxxxx'  # a number
SAFERPAY_SUCCESS_CAPTURE_URL = reverse_lazy('yourshop:payment-capture')  # your callback after getting the money
SAFERPAY_SUCCESS_URL = reverse_lazy('yourshop:thank-you')  # your callback after a successfull order
SAFERPAY_FAIL_URL = reverse_lazy('yourshop:payment-failed')  # your callback after a failed payment
SAFERPAY_ORDER_TEXT_NR = _('Payment for the company XXX, Order nr. %s.')
SAFERPAY_FORCE_LIABILITYSHIFT_ACTIVE = False  # default: False
SAFERPAY_DO_NOTIFY = True  # default: False
...

...
        url(r'', include('saferpay.urls')),
...

./manage.py migrate

from saferpay.gateway import SaferpayService
from saferpay import execptions as sp_execptions


def billing_address_for_saferpay(billing_address):
    """Transform you shop billing address to 
    a format that saferpay uses.
    Your billing_address object can be totaly differnt, 
    adjust it to your needs.
    """
    data = {}
    data['FirstName'] = billing_address.first_name
    data['LastName'] = billing_address.last_name
    data['Street'] = billing_address.line1
    if billing_address.line2:
        data['Street2'] = billing_address.line2
    data['Zip'] = billing_address.postcode
    data['City'] = billing_address.city
    return data


def payment_init(request, order):
    """
    Intizialize a new SaferpayService instance, with your
    order data. Adjust the the order calls for your shop.


    The init payload is created and after success you get
    redirected to the saferpay PayementPage.
    """
    saferpay_service = SaferpayService(
        order_id=order.number, amount=order.total.incl_tax,
        currency=order.total.currency, language_code=language_code
    )

    payload = saferpay_service.payload_init(billing_address=billing_address_data)

    try:
        token = saferpay_service.paymentpage_init(payload)
        request.session['saferpay_token'] = token
        raise RedirectRequired(saferpay_service.paymentpage_redirect().url)
    except sp_execptions.GatewayError as e:
        # do your rollback in case of payment failure 
        return redirect(reverse_lazy('yourshop:payment-failed'))

from saferpay.gateway import SaferpayService
from saferpay import execptions as sp_execptions


def payment_capture(request):
    token = request.session['saferpay_token']
    saferpay_service = SaferpayService.init_from_transaction(token=token)
    try:
        status = saferpay_service.paymentpage_assert()
    except (
        sp_execptions.GatewayError, sp_execptions.TransactionDeclined,
        sp_execptions.UnableToTakePayment, sp_execptions.PaymentError
    ) as e:
        # do your rollback in case of payment failure 
        return redirect(reverse_lazy('yourshop:payment-failed'))
    if status == 'CAPTURED':
        # register the payment in you shop
        logger.info("Order #%s: payment successful, placing order", saferpay_service.order_id)

        try:
            # place the order
        except UnableToPlaceOrder as e:
            # go back to preview