FIX: Removing coroutine in a heap that contiains tuples, not coroutines.

content/blog/asyncio-0.md

@@ -295,9 +295,11 @@ something usefull to the coroutine manager, like an ETA before calling
             if exec_at > datetime.now():
                 sleep((exec_at - datetime.now()).total_seconds())
             try:
-                heapq.heappush(coros, (coro.send(None), coro))
+                exec_at = coro.send(None)
             except StopIteration as stop:
-                coros.remove(coro)
+                pass
+            else:
+                heapq.heappush(coros, (exec_at, coro))
 
     print(measured_coro_manager(tum(), pak()))
 
@@ -451,10 +453,12 @@ From this point we can go further by playing with the [dining philosophers probl
             if exec_at > now:
                 sleep((exec_at - now).total_seconds())
             try:
-                heapq.heappush(coros, (coro.send(None), i, coro))
-                i += 1
+                exec_at = coro.send(None)
             except StopIteration as stop:
-                coros.remove(coro)
+                pass
+            else:
+                i += 1
+                heapq.heappush(coros, (exec_at, i, coro))
 
     table = Table()
     measured_coro_manager(check_life(table.philosophers),