TypeError: init() takes at most 2 arguments (4 given)

Question

i got error message when trying to run the test of django this is my code for the model file

 class MountPoint(models.Model): name = models.CharField(max_length=100) backend = models.CharField(max_length=200,default=DEFAULT_BACKEND) path = models.CharField(max_length=300) def __unicode__(self): return self.name

and here is the class i put in test

 class MountPoint(TestCase): def create_mountpoint(self): name = "test" backend = "test" path = user_root return MountPoint(name, backend, path) def test_mountpoint_creation(self): m = self.create_mountpoint() self.assertTrue(isinstance(m, MountPoint)) self.assertEqual(m.__unicode(), m.name)

and the error message i got is below. it said i have more inputs than expected.

Traceback (most recent call last): File "/Users/xihui/Documents/WebProgramming/django/ece264site/filesystem/tests.py", line 18, in test_mountpoint_creation m = self.create_mountpoint() File "/Users/xihui/Documents/WebProgramming/django/ece264site/filesystem/tests.py", line 15, in create_mountpoint return MountPoint(name, backend, path) TypeError: __init__() takes at most 2 arguments (4 given) ---------------------------------------------------------------------- Ran 1 test in 0.009s FAILED (errors=1)

The name of the test class shadows the name of your model class, so when you try to instantiate a model instance, it actually tries to create a new instance of the test class, which takes different args obviously. Rename your test class to TestMountPoint — andrean
– andrean, Commented Nov 3, 2015 at 6:22
by the way, DEFAULT_BACKEND = 'filesystem.backend.HDWrapper.DirectionHDWrapper,filesystem.backend.HDWrapper.DocumentHDWrapper' — Nicholas Wang
– Nicholas Wang, Commented Nov 3, 2015 at 6:23

albar · Accepted Answer · 2015-11-03 10:14:21Z

1

I think you must use keyword args:

return MountPoint(name=name, backend=backend, path=path)

answered Nov 3, 2015 at 10:14

albar

3,1001 gold badge18 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Saul López · Accepted Answer · 2024-09-11 15:46:30Z

MountPoint is a model? or a TestCase? define the model import with as, you are creating a instance of your test case. Example:

from .models import MountPoint as MountPointModel

Or rename u'r test case:

class MountPointTest(TestCase) ...

This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review

Collectives™ on Stack Overflow

TypeError: init() takes at most 2 arguments (4 given)

2 Answers 2

Comments

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Related