#31372: autoreload: dictionary changed size during iteration
-------------------------------------+-------------------------------------
Reporter: minusf | Owner: nobody
Type: Bug | Status: new
Component: Core | Version: 2.2
(Management commands) |
Severity: Normal | Keywords: autoreload
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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Found this issue recently, not 100% reproducable. Not a huge project,
actually a quite small one. macOS catalina, 10.15.3, python from brew
(/usr/local/bin/python3) 3.7.7, Django 2.2.11, could not reproduce with
3.0.4 in light testing, but maybe it's useful to have this stacktrace
here. (can't move to 3 now because of dependencies btw).
{{{
2020-03-17 14:48:33,118 INFO: autoreload.py:597: Watching for file changes
with WatchmanReloader
Performing system checks...
Traceback (most recent call last):
File "manage.py", line 22, in <module>
main()
File "manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/__init__.py", line 381, in
execute_from_command_line
utility.execute()
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/commands/runserver.py", line 60, in
execute
super().execute(*args, **options)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/commands/runserver.py", line 95, in handle
self.run(**options)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/core/management/commands/runserver.py", line 102, in run
autoreload.run_with_reloader(self.inner_run, **options)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 598, in run_with_reloader
start_django(reloader, main_func, *args, **kwargs)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 583, in start_django
reloader.run(django_main_thread)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 301, in run
self.run_loop()
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 307, in run_loop
next(ticker)
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 520, in tick
self.update_watches()
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 493, in update_watches
self._update_watches()
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 476, in _update_watches
watched_files = list(self.watched_files(include_globs=False))
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 262, in watched_files
yield from iter_all_python_module_files()
File "/Users/user/src/venv/lib/python3.7/site-
packages/django/utils/autoreload.py", line 101, in
iter_all_python_module_files
modules_view = sorted(list(sys.modules.items()), key=lambda i: i[0])
RuntimeError: dictionary changed size during iteration
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/31372>
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