id summary reporter owner description type status component version severity resolution keywords cc stage has_patch needs_docs needs_tests needs_better_patch easy ui_ux 30500 Error reporting returns a circular import error on a python formatting error, and does not restart the development server Runner15 Tom Forbes "In Django 2.2.1, a python formatting error, such as a NameError or IndentationError will give the error shown below: {{{ Exception in thread django-main-thread: Traceback (most recent call last): File ""/home/runner/.local/lib/python3.5/site-packages/django/urls/resolvers.py"", line 581, in url_patterns iter(patterns) TypeError: 'module' object is not iterable During handling of the above exception, another exception occurred: Traceback (most recent call last): File ""/usr/lib/python3.5/threading.py"", line 914, in _bootstrap_inner self.run() File ""/usr/lib/python3.5/threading.py"", line 862, in run self._target(*self._args, **self._kwargs) File ""/home/runner/.local/lib/python3.5/site-packages/django/utils/autoreload.py"", line 54, in wrapper fn(*args, **kwargs) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/management/commands/runserver.py"", line 117, in inner_run self.check(display_num_errors=True) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/management/base.py"", line 390, in check include_deployment_checks=include_deployment_checks, File ""/home/runner/.local/lib/python3.5/site-packages/django/core/management/base.py"", line 377, in _run_checks return checks.run_checks(**kwargs) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/checks/registry.py"", line 72, in run_checks new_errors = check(app_configs=app_configs) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/checks/urls.py"", line 13, in check_url_config return check_resolver(resolver) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/checks/urls.py"", line 23, in check_resolver return check_method() File ""/home/runner/.local/lib/python3.5/site-packages/django/urls/resolvers.py"", line 398, in check for pattern in self.url_patterns: File ""/home/runner/.local/lib/python3.5/site-packages/django/utils/functional.py"", line 80, in __get__ res = instance.__dict__[self.name] = self.func(instance) File ""/home/runner/.local/lib/python3.5/site-packages/django/urls/resolvers.py"", line 588, in url_patterns raise ImproperlyConfigured(msg.format(name=self.urlconf_name)) django.core.exceptions.ImproperlyConfigured: The included URLconf 'runnertest.urls' does not appear to have any patterns in it. If you see valid patterns in the file then the issue is probably caused by a circular import. }}} This throws django.core.exceptions.ImproperlyConfigured error, with the message that the main urls file does not appear to have any patters in it, and if there are patterns then the issue is probably a circular import. Neither of these are the problem, as it is just a simple line in the code that is indented improperly, or a variable that is not assigned. When this issue is fixed, the development server does not restart itself to reflect this fix. It manually has to be quit and then restarted. The code below is the same python formatting error in Django 2.1. It shows the error at the end of the error reporting, and when the error is fixed in the code, the development server restarts itself. {{{ Unhandled exception in thread started by .wrapper at 0x7f03cb1029d8> Traceback (most recent call last): File ""/home/runner/.local/lib/python3.5/site-packages/django/utils/autoreload.py"", line 225, in wrapper fn(*args, **kwargs) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/management/commands/runserver.py"", line 117, in inner_run self.check(display_num_errors=True) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/management/base.py"", line 379, in check include_deployment_checks=include_deployment_checks, File ""/home/runner/.local/lib/python3.5/site-packages/django/core/management/base.py"", line 366, in _run_checks return checks.run_checks(**kwargs) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/checks/registry.py"", line 71, in run_checks new_errors = check(app_configs=app_configs) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/checks/urls.py"", line 40, in check_url_namespaces_unique all_namespaces = _load_all_namespaces(resolver) File ""/home/runner/.local/lib/python3.5/site-packages/django/core/checks/urls.py"", line 57, in _load_all_namespaces url_patterns = getattr(resolver, 'url_patterns', []) File ""/home/runner/.local/lib/python3.5/site-packages/django/utils/functional.py"", line 37, in __get__ res = instance.__dict__[self.name] = self.func(instance) File ""/home/runner/.local/lib/python3.5/site-packages/django/urls/resolvers.py"", line 533, in url_patterns patterns = getattr(self.urlconf_module, ""urlpatterns"", self.urlconf_module) File ""/home/runner/.local/lib/python3.5/site-packages/django/utils/functional.py"", line 37, in __get__ res = instance.__dict__[self.name] = self.func(instance) File ""/home/runner/.local/lib/python3.5/site-packages/django/urls/resolvers.py"", line 526, in urlconf_module return import_module(self.urlconf_name) File ""/usr/lib/python3.5/importlib/__init__.py"", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File """", line 986, in _gcd_import File """", line 969, in _find_and_load File """", line 958, in _find_and_load_unlocked File """", line 673, in _load_unlocked File """", line 665, in exec_module File """", line 222, in _call_with_frames_removed File ""/mnt/c/Users/myName/documents/python/django/runnertest/runnertest/urls.py"", line 23, in path('air/', include('appName.urls')), File ""/home/runner/.local/lib/python3.5/site-packages/django/urls/conf.py"", line 34, in include urlconf_module = import_module(urlconf_module) File ""/usr/lib/python3.5/importlib/__init__.py"", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File """", line 986, in _gcd_import File """", line 969, in _find_and_load File """", line 958, in _find_and_load_unlocked File """", line 673, in _load_unlocked File """", line 665, in exec_module File """", line 222, in _call_with_frames_removed File ""/mnt/c/Users/myName/documents/python/django/runnertest/appName/urls.py"", line 3, in from . import views File ""/mnt/c/Users/myName/documents/python/django/runnertest/appName/views.py"", line 233, in a NameError: name 'a' is not defined }}} This can be replicated by adding an extra space on a line in your views file, or throwing a variable name that does not exist on its own line." Bug closed Error reporting 2.2 Release blocker fixed error reporting, error, circular import Keryn Knight Tom Forbes Ready for checkin 1 0 0 0 0 0