Updated subset notebook.

Author: rossant

chapter2/cleaning/subset.ipynb

@@ -53,7 +53,7 @@
     "# Only keep one out of 'step' lines ('200' = 0.5%).\n",
     "step = 200\n",
     "# In every file, stop after 'stop' lines (None=until the end).\n",
-    "stop = None"
+    "stop = None  # type 400 to test the script and generate tiny subsets."
    ]
   },
   {
@@ -165,7 +165,8 @@
     "        with open(filename, 'wb') as f:\n",
     "            # Iterate over a subset of the rows from all files.\n",
     "            for line in _iter_all_lines(files, step=step, stop=stop):\n",
-    "                f.write(line)"
+    "                f.write(line)\n",
+    "        print(\"*** Done! {0} has been successfully created. ***\\n\".format(filename))"
    ]
   },
   {
@@ -179,7 +180,8 @@
    "cell_type": "code",
    "execution_count": null,
    "metadata": {
-    "collapsed": false
+    "collapsed": false,
+    "scrolled": true
    },
    "outputs": [],
    "source": [