edan_f0/oscar/apps/payment/exceptions.py

class PaymentError(Exception):
    pass


class TransactionDeclined(PaymentError):
    pass


class GatewayError(PaymentError):
    pass


class InvalidGatewayRequestError(PaymentError):
    pass


class InsufficientPaymentSources(PaymentError):
    """
    Exception for when a user attempts to checkout without specifying enough
    payment sources to cover the entire order total.

    Eg. When selecting an allocation off a giftcard but not specifying a
    bankcard to take the remainder from.
    """
    pass


class RedirectRequired(PaymentError):
    """
    Exception to be used when payment processsing requires a redirect
    """

    def __init__(self, url):
        self.url = url


class UnableToTakePayment(PaymentError):
    """
    Exception to be used for ANTICIPATED payment errors (eg card number wrong,
    expiry date has passed).  The message passed here will be shown to the end
    user.
    """
    pass