Update app.py

app.py

@@ -13,10 +13,9 @@ def build(size=5):
     print(box_cent)
     cent=math.ceil(box_cent/2)
     print(cent)
-    print(box_cent[cent])
     num_h,num_v=0,0
     for i in range(1,tot):
-        box[box_cent]=i
+        box[box_cent][cent]=i
         num_h=0-1
         box_cent+=(num_h+num_v)
         print(box)