I tried pprint, print, the former only prints Unicode version, and the latter doesn\'t do pretty prints.
from sympy import symbols
The issue is with your init_printing statement. In a notebook, you do not want to run latex, instead you should use mathjax, so try this instead:
init_printing(use_latex='mathjax')
When I use this, I get normal pretty printing everywhere, even when I have a sympy expression as the last line of the cell.