ImportError: cannot import name 'url' from 'django.conf.urls' after upgrading to Django 4.0

Question

After upgrading to Django 4.0, I get the following error when running python manage.py runserver

  ...
  File "/path/to/myproject/myproject/urls.py", line 16, in <module>
    from django.conf.urls import url
ImportError: cannot import name 'url' from 'django.conf.urls' (/path/to/my/venv/lib/python3.9/site-packages/django/conf/urls/__init__.py)

My urls.py is as follows:

from django.conf.urls

from myapp.views import home

urlpatterns = [
    url(r'^$', home, name="home"),
    url(r'^myapp/', include('myapp.urls'),
]

Answer 1

django.conf.urls.url() was deprecated in Django 3.0, and is removed in Django 4.0+.

The easiest fix is to replace url() with re_path() . re_path uses regexes like url , so you only have to update the import and replace url with re_path .

from django.urls import include, re_path

from myapp.views import home

urlpatterns = [
    re_path(r'^$', home, name='home'),
    re_path(r'^myapp/', include('myapp.urls'),
]

Alternatively, you could switch to using path . path() does not use regexes, so you'll have to update your URL patterns if you switch to path.

from django.urls import include, path

from myapp.views import home

urlpatterns = [
    path('', home, name='home'),
    path('myapp/', include('myapp.urls'),
]

If you have a large project with many URL patterns to update, you may find the django-upgrade library useful to update your urls.py files.

Answer 2

I think a quick fix to this problem is to do followings;

You can easily replace

from django.conf.urls import url

to this:

from django.urls import re_path as url

And keep the rest of code to be same as before. (Thanks @Alasdair)

Answer 3

See in django version 4.0 it will not work. So while installing Django in your Virtual Environment select this version

pip install django==3.2.10

This will definitely solve your error and in main urls.py do this:

from django.conf.urls import url

from django.urls import path,include

Answer 4

Fixed this by changing to...

from django.urls import re_path as url 

and of course replacing re_path with url in urlpatterns