Warning show up even use `django.utils.timezone.now`

[Windson yang]

Create a new project like usual and create a model like this

from django.db import models
from django.utils import timezone

class Learn(models.Model):
    title = models.CharField(max_length=50)
    pay_time = models.DateTimeField(default=timezone.now())

after running migrations and run server, warning still show up
learn.Learn.pay_time: (fields.W161) Fixed default value provided.

HINT: It seems you set a fixed date / time / datetime value as default for this field. This may not be what you want. If you want to have the current date as default, use django.utils.timezone.now

This model already use django.utils.timezone.now, so I think we should not show this warning.

code on ​https://github.com/django/django/blob/d7b2aa24f75434c2ce50100cfef3586071e0747a/django/db/models/fields/__init__.py#L1187

[Tim Graham]

I guess you didn't understand the warning. You should use timezone.now (without parentheses) to use the time the object was created, otherwise timezone.now() evaluates to the time when the web server loads the models.py file. Should the message be clarified?

[Windson yang]

Thank you, it's my mistake. :D