Sympy is much better: 

sage: time v = [-sympy.pi,-sympy.pi+1/10,..,sympy.pi]
CPU times: user 0.12 s, sys: 0.00 s, total: 0.12 s
Wall time: 0.13 s

symbench/r10 (last edited 2008-11-14 13:42:00 by anonymous)