import sympy as sp
sp.init_printing()
sp.symbols('ν')
sp.__version__
'0.7.6'
import IPython
IPython.__version__
'3.1.0'
import sys; sys.version
'3.4.0 (default, Jun 19 2015, 14:20:21) \n[GCC 4.8.2]'
# from sympy.printing.preview import preview
preview??
sp.symbols('v')