pypayex is a Python module for interacting with the PayEx Soap API.
The PayEx implementation manual is available here: http://www.payexpim.com/
Install pypayex (available on PyPi):
pip install pypayex
Requires the suds SOAP library, and ordereddict on Python < 2.7.
from payex.service import Payex
service = Payex(merchant_number='YOU_MERCHANT_NUMER', encryption_key='YOUR_ENCRYPTION_KEY', production=False)
# Initialize payment
response = service.initialize(purchaseOperation='SALE', price='5000', currency='NOK', vat='2500', orderID='test1', productNumber='123', description=u'This is a test.', clientIPAddress='127.0.0.1', clientIdentifier='USERAGENT=test&username=testuser', additionalValues='PAYMENTMENU=TRUE', returnUrl='http://example.org/return/', view='PX', cancelUrl='http://example.org/cancel/')
User performs the payment on the URL in response['redirectURL'], and is redirected back to the returnUrl.
# When user is redirected back to the returnUrl, check the status of the transaction
response = service.complete(orderRef='GENERATED_ORDER_REF')
# Transaction was successfully performed
response['status']['errorCode'] == 'OK' and response['transactionStatus'] == '0'