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
27766	runserver crashes because of auto-reloader (Py3 + PowerShell)	oTree-org	nobody	"Repro steps:

- Install Python 3.x (doesn't happen on 2.x)
- Open Windows PowerShell (only happens with PowerShell, not CMD or bash)
- `pip install django`
- `django-admin startproject foobar`
- `cd foobar`
- `python manage.py runserver`

This causes a Windows crash with a window that says: ""Python has stopped working"": http://imgur.com/dOt6eKE

However, `python manage.py runserver --noreload` works fine, so it seems related to the auto-reloader.

Here is the info from the Windows Event Viewer:

{{{
Faulting application name: python.exe, version: 3.5.1150.1013
Faulting module name: ucrtbase.dll, version: 10.0.14393.0
Exception code: 0xc0000005
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll

}}}

I have seen it happen with at least 5 people using Py3 & PowerShell, with Windows 8 or 10, and various PC models. (Though most people seem unaffected.)

Occurs with Django 1.8/1.10 and Python 3.5/3.6, maybe others also."	Bug	closed	Utilities	1.10	Normal	needsinfo			Unreviewed	0	0	0	0	0	0