Python类构造函数不起作用，给出了太多参数

Question

I didn't write "Django" in the question cause I don't think it is relevant. I have a Django Test that starts like this:

class APITests(APITestCase):

    def __init__(self):

        self.token = ""
        self.fixtures = ['tests/testdata.json']
        super(APITests, self).__init__()

It doesn't work, it gives me the error:

TypeError: __init__() takes exactly 1 argument (2 given)

Could anyone explain me why? how can I solve this?

Answer 1

I don't think you should actually override __init__ for APITestCase . I think they provide special setup and teardown methods that can be overridden.

But if you really have to override it, make sure you accept all arguments that are passed by the testing framework:

class APITests(APITestCase):
    def __init__(self, *args, **kwargs):
        self.token = ""
        self.fixtures = ['tests/testdata.json']
        super(APITests, self).__init__(*args, **kwargs)

or define them as class attributes:

class APITests(APITestCase):
    tokens = ""
    fixtures = ('tests/testdata.json')
    ...