move self.a, self.b to separate lines

iterators.html

@@ -164,7 +164,8 @@ body{counter-reset:h1 6}
         self.max = max
 
 <a>    def __iter__(self):                           <span class=u>&#x2462;</span></a>
-        self.a, self.b = 0, 1
+        self.a = 0
+        self.b = 1
         return self
 
 <a>    def __next__(self):                           <span class=u>&#x2463;</span></a>