TypeError：__ init __（）得到关键字参数'customer'的多个值

Question

customer = CustomerProfile.objects.get(pk=4)
ipdb> SimilarCustomerFinder(self, customer=customer, fields=self.fields)
*** TypeError: __init__() got multiple values for keyword argument 'customer'

在SimilarCustomerFinder课程中，我有

def __init__(self, customer, fields):
    self._matches = {}
    props = self.__class__.__dict__.keys()
    self.customer = customer
    self.fields = fields
    self.checks = [k for k in props if k.startswith('check_')]
    if customer:
        self.user_id = customer.user.pk
    else:
        self.user_id = -1

    for check in self.checks:
        c = check.replace('+', '_')
        getattr(self, c)()

我正在努力解决这个错误。我该怎么办呢？如果我删除customer=customer，我会*** AttributeError: 'CustomerUpdateForm' object has no attribute 'user'，为什么？

Answer 1

鉴于ipdb输出，您似乎正在尝试使用此命令创建实例：

SimilarCustomerFinder(self, customer=customer, fields=self.fields)

但是self是一个隐式传递的参数，所以你不应该明确地传递它。像这样：

SimilarCustomerFinder(customer=customer, fields=self.fields)

或者如果你真的打算明确地传递它（这可能很奇怪，可能不会按照你的意图 - 但谁知道......）你必须在类上显式调用该方法：

SimilarCustomerFinder.__init__(self, customer=customer, fields=self.fields)