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
21049	RuntimeError when running ./manage.py runserver	lvella@…	mburst	"This happened to me when I tried to ""./manage.py runserver"":


{{{
$ ./manage.py runserver
Validating models...

Traceback (most recent call last):
  File ""./manage.py"", line 10, in <module>
    execute_from_command_line(sys.argv)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/core/management/__init__.py"", line 397, in execute_from_command_line
    utility.execute()
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/core/management/__init__.py"", line 390, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/core/management/base.py"", line 240, in run_from_argv
    self.execute(*args, **options.__dict__)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/core/management/base.py"", line 283, in execute
    output = self.handle(*args, **options)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/core/management/commands/runserver.py"", line 75, in handle
    self.run(*args, **options)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/core/management/commands/runserver.py"", line 84, in run
    autoreload.main(self.inner_run, args, options)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/utils/autoreload.py"", line 181, in main
    reloader(wrapped_main_func, args, kwargs)
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/utils/autoreload.py"", line 148, in python_reloader
    reloader_thread()
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/utils/autoreload.py"", line 129, in reloader_thread
    if code_changed():
  File ""/home/vella/projetos/chroni9/venv/site-packages/django/utils/autoreload.py"", line 60, in code_changed
    for m in sys.modules.values():
RuntimeError: dictionary changed size during iteration
}}}

I am using Django 1.6b2, with the totally experimental Python 3 implementation from PyPy 2.1, so I can not be sure if this really is a Django Python 3 issue, just PyPy issue, or PyPy Python 3 issue.

It happened only once, just now, and I was unable to reproduce. I am using SQLite, if that matters..."	Bug	closed	Python 3	1.6-beta-1	Normal	fixed			Accepted	1	0	0	0	1	0