With IPython `./manage.py shell` gives back a DeprecationWarning regarding the with statement

[Rohan Jain]

I came across this issue while debugging #19738. This happens in a fresh django project.

The traceback:

└─> ./manage.py shell                                                                                                                          Python 2.7.3rc2 (default, Mar 21 2012, 06:59:11) 
Type "copyright", "credits" or "license" for more information.

IPython 0.13.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.
('VIRTUAL_ENV ->', '/home/rohan/.virtualenvs/django/lib/python2.7/site-packages')
/home/rohan/workspace/src/ipython/IPython/frontend/terminal/interactiveshell.py:463: DeprecationWarning: With-statements now directly support multiple context managers
  with nested(self.builtin_trap, self.display_trap):

It doesn't seem like an issue in IPython because I was able to similarly invoke it from a python script without any warning.

[Aymeric Augustin]

Deprecation warnings are silent in Python by default, but Django makes them loud since #18985 was fixed.

[Rohan Jain]

Alright, thanks. This is an IPython issue then. Should I close this as invalid? Also, if #19737 goes along, all the similar issue will become irrelevant.

[anonymous]

Any work around this thing, the warning is pretty irritating and I am finicky about these things

[int_ua]

The workaround/fix is to remove the nested() function:

with self.builtin_trap, self.display_trap:

​https://github.com/ipython/ipython/issues/4455

[Claude Paroz]

Note that this should be fixed by [0c6a3399523d850cfbd20de54cd089419a47383d]