Hi Rob, with this syntex:
> x=0 > for y_1 in [1..2]: > for y_2 in [1..y_1]: > x += [y_1,y_2] > print x what I am trying to do is, trying to use the two numbers y_1 and y_2 in x +=[y_1,y_2] to assign it a number from previously set conditions > if y_1 = y_2: > y_1 = y_2 = 2 > elif y_1>y_2: > y_1 = y_2 = 1 but currently my code is having trouble doing that. Is there a way to do this please? Kind Regards Chappman On Feb 6, 11:23 pm, Robert Bradshaw <rober...@math.washington.edu> wrote: > On Mon, Feb 6, 2012 at 3:12 PM, Chappman <chappman....@gmail.com> wrote: > > Hi, I am currently trying to write a program for my project and am > > trying to make the following syntax work: > > > if y_1=y_2: > > [y_1,y_2]=2 > > elif y_1>y_2: > > [y_1,y_2]=1 > > I think you want is > > > if y_1 = y_2: > > y_1 = y_2 = 2 > > elif y_1>y_2: > > y_1 = y_2 = 1 > > "[a,b] = x" essentially means "tmp = list(x); a = tmp[0]; b = tmp[1]" > > > x=0 > > for y_1 in [1..2]: > > for y_2 in [1..y_1]: > > x += [y_1,y_2] > > print x > > What are you trying to do here? x is an integer, [y_1, y_2] is a list > of integers. It doesn't really make sense to add an integer to a list. > > > > > > > > > The error messages I am getting is " TypeError: > > 'sage.rings.integer.Integer' object is not iterable ". > > > When this code is fixed and does work, the answer would be x=5. > > Can anybody see where my code is going wrong please? > > > Kind Regards > > Chappman > > > -- > > 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 > > athttp://groups.google.com/group/sage-support > > URL:http://www.sagemath.org -- 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
