fix range error and notebook weight

Author: experiencor

Diff for: Yolo Step-by-Step.ipynb

@@ -921,20 +921,6 @@
     "                             period=1)"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "ExecuteTime": {
-     "end_time": "2017-09-28T12:42:51.550566Z",
-     "start_time": "2017-09-28T20:42:49.770231+08:00"
-    }
-   },
-   "outputs": [],
-   "source": [
-    "model.load_weights('weights_coco.h5')"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,

Diff for: preprocessing.py

@@ -73,7 +73,7 @@ def __init__(self, images,
         self.norm    = norm
 
         self.counter = 0
-        self.anchors = [BoundBox(0, 0, config['ANCHORS'][2*i], config['ANCHORS'][2*i+1]) for i in range(len(config['ANCHORS'])//2)]
+        self.anchors = [BoundBox(0, 0, config['ANCHORS'][2*i], config['ANCHORS'][2*i+1]) for i in range(int(len(config['ANCHORS'])//2))]
 
         ### augmentors by https://github.com/aleju/imgaug
         sometimes = lambda aug: iaa.Sometimes(0.5, aug)