fixed for-loop example

rasbt · rasbt · commit c3fc8395e20f · 2014-04-29T21:25:40.000-04:00
diff --git a/tutorials/scope_resolution_legb_rule.ipynb b/tutorials/scope_resolution_legb_rule.ipynb
@@ -947,7 +947,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "As it was briefly mentioned in the introduction, `for-loops` will create their own namespaces, which will be deleted after the for-loop has completed. Consider the following example (exectuted in Python 3.4):\n"
+      "In contrast to some other programming languages, `for-loops` will use the scope they exist in and leave their defined loop-variable behind.\n"
      ]
     },
     {
@@ -971,32 +971,13 @@
        ]
       }
      ],
-     "prompt_number": 15
-    },
-    {
-     "cell_type": "markdown",
-     "metadata": {},
-     "source": [
-      "We can roughly sketch the situation as follows \n",
-      "\n",
-      "*before the for-loop*:  \n",
-      "`- global_namespace = {'a_name':object1, ...}`\n",
-      "\n",
-      "*during the for-loop*:  \n",
-      "`- global_namespace = {'a_name':object1, ...}`  \n",
-      "`- for-loop_namespace = {'a':object201, ...}`\n",
-      "\n",
-      "*after the for-loop*:  \n",
-      "`- global_namespace = {'a_name':object1, ...}`\n",
-      "\n",
-      "\n"
-     ]
+     "prompt_number": 5
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "**However, this does not apply if we defined the `for-loop` variable in the global namespace before!**"
+      "**This also applies if we explicitely defined the `for-loop` variable in the global namespace before!** In this case it will rebind the existing variable:"
      ]
     },
     {
@@ -1021,13 +1002,13 @@
        ]
       }
      ],
-     "prompt_number": 7
+     "prompt_number": 9
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "In **Python 3.4**, we can use closures to prevent the for-loop variable to cut into the global namespace. Here is an example (exectuted in Python 3.4):"
+      "However, in **Python 3.x**, we can use closures to prevent the for-loop variable to cut into the global namespace. Here is an example (exectuted in Python 3.4):"
      ]
     },
     {
@@ -1056,12 +1037,20 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "Why did I mention \"Python 3.4\"? Well, as it happens, the same code executed in Python 2.x would print:\n",
+      "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",
       "<pre>"
      ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
     }
    ],
    "metadata": {}
