output fix for for-loop leak

not_so_obvious_python_stuff.ipynb

@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:70671a8e3f32d21b27867ecdc6d80f3b5c10f00339a2fae3860c4db8930dc7c6"
+  "signature": "sha256:08b042706cb433ce1f2446c6b6ac00be197268042e605da41164e7d02562766d"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -2577,6 +2577,52 @@
      "metadata": {},
      "outputs": []
     },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "#### In Python 3.x for-loop variables don't leak into the global namespace anymore"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "This goes back to a change that was made in Python 3.x and is described in [What\u2019s New In Python 3.0](https://docs.python.org/3/whatsnew/3.0.html) as follows:\n",
+      "\n",
+      "\"List comprehensions no longer support the syntactic form `[... for var in item1, item2, ...]`. Use `[... for var in (item1, item2, ...)]` instead. Also note that list comprehensions have different semantics: they are closer to syntactic sugar for a generator expression inside a `list()` constructor, and in particular the loop control variables are no longer leaked into the surrounding scope.\""
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "i = 1\n",
+      "print([i for i in range(5)])\n",
+      "print(i, '-> i in global')"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "[0, 1, 2, 3, 4]\n",
+        "1 -> i in global\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "In Python 2.x this would print  \n",
+      "`print(4, '-> i in global')`"
+     ]
+    },
     {
      "cell_type": "markdown",
      "metadata": {},

tutorials/scope_resolution_legb_rule.ipynb

@@ -1,6 +1,7 @@
 {
  "metadata": {
-  "name": "scope_resolution_legb_rule"
+  "name": "",
+  "signature": "sha256:1e3a847a38ee33d41e745f74fe6b8a143b9aeb47d0a1e3029ea52899d97687cb"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -1063,7 +1064,7 @@
       "Why did I mention \"Python 3.x\"? Well, as it happens, the same code executed in Python 2.x would print:\n",
       "\n",
       "<pre>\n",
-      "print(4, '-> i in global')\n",
+      "4 -> i in global\n",
       "<pre>"
      ]
     },