[Tutor] Hey guys!

[Levi Adissi]

So I'm kind of stuck trying to program a function that returns a list of
tuples. The function takes 2 lists containing circles of which it should
compare list1[0] to list2[0] to see if they intersect. If they intersect or
touch then I should return them on a list of tuples(in the tuple would be
both intersecting circles).

I can't get circles_only to work the way I see it I'm comparing h to x only
if they're both in the same place on the list (hence my "h==x") I know it
doesn't work because the test returns None so I would really appreciate an
alternative method if you guys see one.

Here are my functions:


def circles_overlap(c1, c2):
   x=(c2.center.y-c1.center.y)**2
   y=(c2.center.x-c1.center.x)**2
   distancemid=math.sqrt(x+y)
   distancerad=(c1.radius+c2.radius)
   if distancemid > distancerad:
       return 1
   elif distancemid < distancerad:
       return -1
   elif distancemid == distancerad:
       return 0

def circles_only(lst1, lst2):
   newlst=[]
   for h in lst1:
      for x in lst2:
         if h==x:
            if circles_overlap(lst1[h],lst2[x])== -1:
               newlst.append(lst1[h],lst2[x])

            elif circles_overlap(lst1[h],lst2[x])== 0:
               newlst.append(lst1[h],lst2[x])

   print newlst


TEST CASE:

    def test_circles_olap1(self):
        list1=[data_2.Circle(data_2.Point(2,3),
2),data_2.Circle(data_2.Point(2,3), 2), data_2.Circle(data_2.Point(2,3), 2)
               ]
        list2=[data_2.Circle(data_2.Point(6,3),
2),data_2.Circle(data_2.Point(10,3), 2), data_2.Circle(data_2.Point(5,3), 2)
               ]
        testor=functions_2.circles_only(list1,list2)
        newlist=[(data_2.Circle(data_2.Point(2,3),
2),data_2.Circle(data_2.Point(6,3), 2)),(data_2.Circle(data_2.Point(2,3),
2),data_2.Circle(data_2.Point(10,3), 2))]
        self.assertEqual(testor, newlist)


Thanks in advance!