Hi Marco, On Fri, Jun 11, 2010 at 5:03 AM, Marco Boretto <marco.b...@gmail.com> wrote: > I'm tryng to to simple thing like this: > > m=[0.6158, 0.5893, 0.5682, 0.51510, 0.4980, 0.4750, 0.5791, > 0.5570,0.5461, 0.4970, 0.4920, 0.4358, 0.422, 0.420] > m.count > > i want to know the number of the object but the answer is > > <built-in method count of list object at 0x3f31a28> > > Want does it mean?
It means that the m.count is located at the memory address 0x3f31a28. To get the number of elements in a list, do sage: m = [0.6158, 0.5893, 0.5682, 0.51510, 0.4980, 0.4750, 0.5791, 0.5570,0.5461, 0.4970, 0.4920, 0.4358, 0.422, 0.420] sage: # how many elements in m sage: len(m) 14 > Another similar thing, i want to multiply the all the elements for > 10^-6 > > so i try: > m= (10^-6)*[0.6158, 0.5893, 0.5682, 0.51510, 0.4980, 0.4750, 0.5791, > 0.5570,0.5461, 0.4970, 0.4920, 0.4358, 0.422, 0.420] > > but is not the rigth way.. how i can do it? Try this sage: # multiply each element by 10^(-6) sage: [i*10^(-6) for i in m] [6.15800000000000e-7, 5.89300000000000e-7, 5.68200000000000e-7, 5.15100000000000e-7, 4.98000000000000e-7, 4.75000000000000e-7, 5.79100000000000e-7, 5.57000000000000e-7, 5.46100000000000e-7, 4.97000000000000e-7, 4.92000000000000e-7, 4.35800000000000e-7, 4.22000000000000e-7, 4.20000000000000e-7] -- Regards Minh Van Nguyen -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
