[issue26062] IPython4 bash magic ! with {} does not work with Python 3.5.1

New submission from Christoph Böddeker: Hello, I found a wrong behavior with IPython 4 in combination with Python 3.5.1. Normally in a command like "In [2]: !echo {a}" everything inside {} is interpreted with python and inserted to executed the line with bash. After I done a upgrade tp

[issue26062] IPython4 bash magic ! with {} does not work with Python 3.5.1

SilentGhost added the comment: > It seems to me, that this change in python is not nessesary. > I don't, know how to find the commit, message who has changed this and why. It was done in issue 13598. It's a bit puzzling that IPython decided to depend on behaviour of a private method. I'd

[issue26062] IPython4 bash magic ! with {} does not work with Python 3.5.1

Emanuel Barry added the comment: The choice of IPython to depend on a private, undocumented method means that they are subject to such bugs. A quick Google search tells me you should probably report the issue here: https://github.com/ipython/ipython/issues -- nosy: +ebarry status:

[issue26062] IPython4 bash magic ! with {} does not work with Python 3.5.1

Christoph Böddeker added the comment: ok, thanks, I have opend there an issue https://github.com/ipython/ipython/issues/9120 -- ___ Python tracker ___

[issue26062] IPython4 bash magic ! with {} does not work with Python 3.5.1

Brett Cannon added the comment: Python itself has nothing to do with IPython's shell commands (i.e., !). It would be best to report this bug to IPython to have them fix it on their end. -- nosy: +brett.cannon resolution: -> third party status: open -> closed

[issue26062] IPython4 bash magic ! with {} does not work with Python 3.5.1

Christoph Böddeker added the comment: That's true. Now I have finde the reason. Someone has changed a function in lib/python3.5/string.py : _vformat. This function returns now a tuple (befor it was only one return value). IPython inherits from this object in