INSTALLED_APPS = [
    # ...
    "django_errors",
    # ...
]

# ...other imports...
from django_errors import views as errors_views

urlpatterns = [
    # ...other urls...
]

handler400 = errors_views.custom_400
""" Handle 400 error """

handler403 = errors_views.custom_403
""" Handle 403 error """

handler404 = errors_views.custom_404
""" Handle 404 error """

handler500 = errors_views.custom_500
""" Handle 500 error """