此错误：select c.CustomerID 'Customer ID', c.CompanyName 'Company Name',
c.ContactName 'Contact Name', c.Address, c.City,
c.StateOrRegion 'State Or Region', c.PostalCode 'Postal Code',
c.Country, c.Phone, c.Fax, o.OrderID 'Order ID',
o.ShippedDate 'Shipped Date'
from Customers c
left join orders o
on o.customerid = c.customerid
where o.shippeddate is null
order by c.ContactTitle asc
：
cancel_agreement() missing 1 required positional argument: 'agreement_id'以下是def force_cancel(self):
api = model_from_ref(self.processor.api)
api.cancel_agreement(self.subscription_reference)
# transaction.cancel_subscription() # runs in the callback
方法：
cancel_agreement()我不明白为什么会发生错误：它调用一个双参数函数（def cancel_agreement(self, agreement_id, is_upgrade=False):
note = _("Upgrading billing plan") if is_upgrade else _("Canceling a service")
r = self.session.post(self.server + '/v1/payments/billing-agreements/%s/cancel' % agreement_id,
data='{"note": "%s"}' % note,
headers={'content-type': 'application/json'})
if r.status_code != requests.codes.ok:
raise RuntimeError(_("Cannot cancel a billing agreement at PayPal. Please contact support."))
和api），它的定义也是两个必需参数（self.subscription_reference和{ {1}}）。
可悲的是，我无法显示整个代码，因为我的业务合作伙伴反对将其发布为开源代码。
答案 0 :(得分：1)
应该是：
def force_cancel(self):
klass = model_from_ref(self.processor.api)
api = klass()
api.cancel_agreement(self.subscription_reference)