optm.py running
minimum (x-5)**4 in -10 to +10 initial 2, 0.001, 0.001, 200
xbest= 5.007 , fval= 2.401e-09 ,cnt= 21
 
minimum (x-5)**4 in -10 to +10 initial 2 using default
xbest= 4.998271 , fval= 8.9367574925e-12 ,cnt= 35