On 4/26/2011 3:27 PM, Dan Stromberg wrote: > for 0<= i< 10000000: >> x *= 0.8 >> #x += 0.01 >> print x In my WinXP (Athlon), 3.2 standard install x=1.0 print(x) for i in range(10000000): x *= 0.8 x += 0.01 print(x) takes about 3 1/2 secs with addition commented out and about 4 when included as above, which is about what I would expect. -- Terry Jan Reedy