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
