Bug#827740: isympy start fails: No module named sympy.interactive

[Alberto Luaces]

Francesco Poli writes:

>> trying to start isympy fails with the error in the subject line.
> [...]
>> ii  python3-sympy            1.0-1
> [...]
>
> I see that you have python3-sympy installed.
>
> What's the output of
>
>   $ /usr/bin/python --version
>
> on your system?

$ python -V
Python 2.7.12rc1
$ python3 -V
Python 3.5.2rc1