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PaymentException base class.

src/p/a/PayPy-0.6/paypy/payment.py   PayPy(Download)
from paypy.exceptions.payment import PaymentException
ADAPTERS = ('authnet', 'google', 'paypal')
    def __init__(self, configuration, adapter='authnet'):
        # A adapter must be specified
        if not adapter:
            raise PaymentException('You must specify a gateway adapter')
        # Is the driver allowed?
        if adapter not in ADAPTERS:
            raise PaymentException('The configured adapter is not supported')
        # Lazy load