Polish test notebook

examples/tests/Test Output Callbacks.ipynb

@@ -29,7 +29,7 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "print 'hi'"
+      "print('hi')"
      ],
      "language": "python",
      "metadata": {},
@@ -180,7 +180,7 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# press tab after parentheses\n",
+      "# press shift-tab after parentheses\n",
       "int("
      ],
      "language": "python",
@@ -199,7 +199,7 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "# pres tab after f\n",
+      "# press tab after f\n",
       "f"
      ],
      "language": "python",
@@ -218,7 +218,7 b''
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "import sys\n",
+      "import sys, time\n",
       "from IPython.display import clear_output"
      ],
      "language": "python",
@@ -232,7 +232,7 b''
       "for i in range(10):\n",
       "    clear_output()\n",
       "    time.sleep(0.25)\n",
-      "    print i\n",
+      "    print(i)\n",
       "    sys.stdout.flush()\n",
       "    time.sleep(0.25)\n"
      ],
@@ -247,7 +247,7 b''
       "for i in range(10):\n",
       "    clear_output(wait=True)\n",
       "    time.sleep(0.25)\n",
-      "    print i\n",
+      "    print(i)\n",
       "    sys.stdout.flush()\n"
      ],
      "language": "python",