Starting IPython shell crashes pudb when using Django 2.2

How to reproduce:

- `pip install Django pudb ipython`

- Create fresh Django app: `django-admin startproject myproject`, `./manage.py startapp myapp`

- Add a new view method in `myapp/views.py`:

def myview(request):
from pudb import set_trace; set_trace()

- add the view to `myproject/urls.py`

from myapp.views import myview
urlpatterns = [
path('', myview),
]

- Run `./manage.py runserver`, open localhost:8000 in browser. This should halt pudb on the breakpoint in `myview()`

- On pudb, press `!` to open IPython

- Wait for a few seconds

Actual result:

Watching for file changes with StatReloader
Performing system checks...

System check identified no issues (0 silenced).

June 18, 2019 - 11:57:29
Django version 2.2.2, using settings 'myproject.settings'
Starting development server at http://127.0.0.1:8000
Quit the server with CONTROL-C.



Hit Ctrl-D to return to PuDB

In[1]:
Traceback (most recent call last):
File "./manage.py", line 21, in
main()

Environment:

- macOS Mojave 10.14.5
- iTerm2 3.2.9
- Django 2.2 (issue cannot be reproduced with Django 2.1)
- pudb==2019.1 (latest on PyPI as of writing this ticket)
- IPython==7.5.0 (latest on PyPI as of writing this ticket)
- make sure to keep Django autoreloader enabled (this is default). It seems issue cannot be reproduced when autoreloader is disabled (`./manage.py runserver --noreload`)