#30215: `AttributeError: __spec__` on `./manage.py runserver`
-------------------------------------+-------------------------------------
Reporter: flaviut | Owner: nobody
Type: Bug | Status: new
Component: Core | Version: 2.2
(Management commands) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 1
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 1
UI/UX: 0 |
-------------------------------------+-------------------------------------
I get a `AttributeError: __spec__` when I try using the live server.
Here's the full stack trace:
{{{
$ pipenv run ./manage.py runserver
Watchman unavailable: pywatchman not installed.
Watching for file changes with StatReloader
Performing system checks…
Traceback (most recent call last):
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/py/_vendored_packages/apipkg.py", line 141, in __makeattr
modpath, attrname = self.__map__[name]
KeyError: '__spec__'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/user/dev/inventory/manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/__init__.py", line 381, in
execute_from_command_line
utility.execute()
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/commands/runserver.py", line 60, in
execute
super().execute(*args, **options)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/commands/runserver.py", line 95, in handle
self.run(**options)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/core/management/commands/runserver.py", line 102, in run
autoreload.run_with_reloader(self.inner_run, **options)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 579, in run_with_reloader
start_django(reloader, main_func, *args, **kwargs)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 564, in start_django
reloader.run(django_main_thread)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 275, in run
self.run_loop()
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 281, in run_loop
next(ticker)
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 321, in tick
state.update(self.loop_files(state, previous_timestamp))
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 328, in loop_files
for path, mtime in self.snapshot_files():
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 348, in snapshot_files
for file in self.watched_files():
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 241, in watched_files
yield from iter_all_python_module_files()
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 103, in
iter_all_python_module_files
return iter_modules_and_files(modules, frozenset(_error_files))
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/django/utils/autoreload.py", line 114, in iter_modules_and_files
if not isinstance(module, ModuleType) or module.__spec__ is None:
File "/home/user/etc/.virtualenvs/inventory-HrJj1m_g/lib/python3.7/site-
packages/py/_vendored_packages/apipkg.py", line 146, in __makeattr
raise AttributeError(name)
AttributeError: __spec__
}}}
The fix is really simple: in {{{django/utils/autoreload.py}}}, line 114,
put {{{or not hasattr(module, '__spec__')}}} before {{{or module.__spec__
is None:}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/30215>
Django <https://code.djangoproject.com/>
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