def vprint(expr, **settings):
 outstr = vsprint(expr, **settings)
 from sympy.core.compatibility import builtins
 if (outstr != 'None'):
  builtins._ = outstr
  print outstr

def vprint ( expr , ** settings ) : outstr = vsprint ( expr , ** settings ) from sympy . core . compatibility import builtins if ( outstr != 'None' ) : builtins . _ = outstr print outstr
function for printing of expressions generated in the sympy .