类没有对象成员

Question

def index(request):
   latest_question_list = Question.objects.all().order_by('-pub_date')[:5]
   template = loader.get_template('polls/index.html')
   context = {'latest_question_list':latest_question_list}
   return HttpResponse(template.render(context, request))

The first line of that function gets an error on Question.objects.all() :

E1101: Class 'Question' has no 'objects' member

I'm following the Django documentation tutorial and they have the same code up and running.

I have tried calling an instance.

Question = new Question()
and using MyModel.objects.all()

Also my models.py code for that class is this...

class Question(models.Model):
    question_text = models.CharField(max_length = 200)
    pub_date = models.DateTimeField('date published') 

    def was_published_recently(self):
        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)

    def __str__(self):
        return self.question_text

To no avail I still have this error.

I have read about pylint and ran this...

pylint --load-plugins pylint_django

Which didn't help, even tho the github readme file says...

Prevents warnings about Django-generated attributes such as Model.objects or Views.request.

I ran the command within my virtualenv, and yet nothing.

So any help would be great.

Answer 1

Install pylint-django using pip as follows

pip install pylint-django

Then in Visual Studio Code goto: User Settings ( Ctrl + , or File > Preferences > Settings if available ) Put in the following (please note the curly braces which are required for custom user settings in VSC):

{"python.linting.pylintArgs": [
     "--load-plugins=pylint_django"
],}

Answer 2

@tieuminh2510's answer is perfect. But in newer versions of VSC you will not find the option to edit or paste that command in User Settings .

For newer versions, add the code in the following steps:

1. Press ctrl shift p to open the the Command Palette.
2. Now in Command Palette type Preferences: Configure Language Specific Settings .
3. Select Python .
4. Add these lines inside the first curly braces:

    "python.linting.pylintArgs": [
            "--load-plugins=pylint_django",
        ]

Make sure that pylint-django is also installed.

Answer 3

Install Django pylint:

pip install pylint-django

ctrl+shift+p > Preferences: Configure Language Specific Settings > Python

The settings.json available for python language should look like the below:

{
    "python.linting.pylintArgs": [
        "--load-plugins=pylint_django"
    ],

    "[python]": {

    }
}

Answer 4

I've tried all possible solutions offered but unluckly my vscode settings won't changed its linter path. So, I tride to explore vscode settings in settings > User Settings > python . Find Linting: Pylint Path and change it to "pylint_django". Don't forget to change the linter to "pylint_django" at settings > User Settings > python configuration from "pyLint" to "pylint_django".

Answer 5

Heres the answer. Gotten from my reddit post... https://www.reddit.com/r/django/comments/6nq0bq/class_question_has_no_objects_member/

That's not an error, it's just a warning from VSC. Django adds that property dynamically to all model classes (it uses a lot of magic under the hood), so the IDE doesn't know about it by looking at the class declaration, so it warns you about a possible error (it's not). objects is in fact a Manager instance that helps with querying the DB. If you really want to get rid of that warning you could go to all your models and add objects = models.Manager() Now, VSC will see the objects declared and will not complain about it again.

Answer 6

UPDATE FOR VS CODE 1.40.0

After doing:

$ pip install pylint-django

Follow this link: https://code.visualstudio.com/docs/python/linting#_default-pylint-rules

Notice that the way to make pylint have into account pylint-django is by specifying:

"python.linting.pylintArgs": ["--load-plugins", "pylint_django"]

in the settings.json of VS Code.

But after that, you will notice a lot of new linting errors. Then, read what it said here:

These arguments are passed whenever the python.linting.pylintUseMinimalCheckers is set to true (the default). If you specify a value in pylintArgs or use a Pylint configuration file (see the next section), then pylintUseMinimalCheckers is implicitly set to false .

What I have done is creating a .pylintrc file as described in the link, and then, configured the following parameters inside the file (leaving the rest of the file untouched):

load-plugins=pylint_django

disable=all

enable=F,E,unreachable,duplicate-key,unnecessary-semicolon,global-variable-not-assigned,unused-variable,binary-op-exception,bad-format-string,anomalous-backslash-in-string,bad-open-mode

Now pylint works as expected.

Answer 7

You can change the linter for Python extension for Visual Studio Code.

In VS open the Command Palette Ctrl+Shift+P and type in one of the following commands:

Python: Select Linter

when you select a linter it will be installed. I tried flake8 and it seems issue resolved for me.

Answer 8

Just adding on to what @Mallory-Erik said: You can place objects = models.Manager() it in the modals:

class Question(models.Model):
    # ...
    def was_published_recently(self):
        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
    # ...
    def __str__(self):
        return self.question_text
    question_text = models.CharField(max_length = 200)
    pub_date = models.DateTimeField('date published')
    objects = models.Manager()

Answer 9

Change your linter to - flake8 and problem will go away.

Answer 10

I was able to update the user settings.json

On my mac it was stored in:

~/Library/Application Support/Code/User/settings.json

Within it, I set the following:

{
    "python.linting.pycodestyleEnabled": true,
    "python.linting.pylintEnabled": true,
    "python.linting.pylintPath": "pylint",
    "python.linting.pylintArgs": ["--load-plugins", "pylint_django"]
}

That solved the issue for me.

Answer 11

First install pylint-django using following command

$ pip install pylint-django

Then run the second command as follows:

$ pylint test_file.py --load-plugins pylint_django

--load-plugins pylint_django is necessary for correctly review a code of django

Answer 12

If you use python 3

python3 -m pip install pylint-django

If python < 3

python -m pip install pylint-django==0.11.1

NOTE: Version 2.0, requires pylint >= 2.0 which doesn't support Python 2 anymore! ( https://pypi.org/project/pylint-django/ )

Answer 13

First, Install pylint-django using pip as follows:

pip install pylint-django

Goto settings.json find and make sure python linting enabled is true like this:

At the bottom write "python.linting.pylintPath": "pylint_django" like this:

OR,

Go to Settings and search for python linting

make sure Python > Linting: Pylint Enabled is checked

Under that Python > Linting: Pylint Path write pylint_django

Answer 14

How about suppressing errors on each line specific to each error?

Something like this: https://pylint.readthedocs.io/en/latest/user_guide/message-control.html

Error: [pylint] Class 'class_name' has no 'member_name' member It can be suppressed on that line by:

  # pylint: disable=no-member

Answer 15

I installed PyLint but I was having the error Missing module docstringpylint(missing-module-docstring) . So I found this answer with this config for pylint:

"python.linting.pylintEnabled": true,
"python.linting.pylintArgs": [
    "--disable=C0111", // missing docstring
    "--load-plugins=pylint_django,pylint_celery",
 ],

And now it works

Answer 16

By doing Question = new Question() (I assume the new is a typo) you are overwriting the Question model with an intance of Question . Like Sayse said in the comments: don't use the same name for your variable as the name of the model. So change it to something like my_question = Question() .

Answer 17

This issue happend when I use pylint_runner

So what I do is open.pylintrc file and add this

# List of members which are set dynamically and missed by pylint inference
# system, and so shouldn't trigger E1101 when accessed. Python regular
# expressions are accepted.
generated-members=objects

Answer 18

Just add objects = None in your Questions table. That solved the error for me.