Update parallel example notebooks for Python 3

examples/parallel/Parallel Magics.ipynb

@@ -67,7 +67,7
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "%px print a"
+      "%px print(a)"
      ],
      "language": "python",
      "metadata": {},
@@ -98,7 +98,8
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "%px print >> sys.stderr, \"ERROR\""
+      "%px from __future__ import print_function\n",
+      "%px print(\"ERROR\", file=sys.stderr)"
      ],
      "language": "python",
      "metadata": {},
@@ -208,7 +209,7
       "%%px --noblock\n",
       "x = np.linspace(0,np.pi,1000)\n",
       "for n in range(id,12, stride):\n",
-      "    print n\n",
+      "    print(n)\n",
       "    plt.plot(x,np.sin(n*x))\n",
       "plt.title(\"Plot %i\" % id)"
      ],
@@ -248,7 +249,7
       "%%px --group-outputs=engine\n",
       "x = np.linspace(0,np.pi,1000)\n",
       "for n in range(id+1,12, stride):\n",
-      "    print n\n",
+      "    print(n)\n",
       "    plt.figure()\n",
       "    plt.plot(x,np.sin(n*x))\n",
       "    plt.title(\"Plot %i\" % n)"
@@ -296,6 +297,8
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "from __future__ import print_function\n",
+      "\n",
       "def generate_output():\n",
       "    \"\"\"function for testing output\n",
       "    \n",
@@ -305,13 +308,13
       "    import sys,os\n",
       "    from IPython.display import display, HTML, Math\n",
       "    \n",
-      "    print \"stdout\"\n",
-      "    print >> sys.stderr, \"stderr\"\n",
+      "    print(\"stdout\")\n",
+      "    print(\"stderr\", file=sys.stderr)\n",
       "    \n",
       "    display(HTML(\"<b>HTML</b>\"))\n",
       "    \n",
-      "    print \"stdout2\"\n",
-      "    print >> sys.stderr, \"stderr2\"\n",
+      "    print(\"stdout2\")\n",
+      "    print(\"stderr2\", file=sys.stderr)\n",
       "    \n",
       "    display(Math(r\"\\alpha=\\beta\"))\n",
       "    \n",
@@ -461,7 +464,7
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "As of IPython 0.14, you can instruct `%%px` to also execute the cell locally.\n",
+      "As of IPython 1.0, you can instruct `%%px` to also execute the cell locally.\n",
       "This is useful for interactive definitions,\n",
       "or if you want to load a data source everywhere,\n",
       "not just on the engines."
@@ -474,7 +477,7
       "%%px --local\n",
       "import os\n",
       "thispid = os.getpid()\n",
-      "print thispid"
+      "print(thispid)"
      ],
      "language": "python",
      "metadata": {},

examples/parallel/helloworld.ipynb

@@ -1,6 +1,6
 {
  "metadata": {
-  "name": "helloworld"
+  "name": ""
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -20,6 +20,7
      "cell_type": "code",
      "collapsed": true,
      "input": [
+      "from __future__ import print_function\n",
       "from IPython.parallel import Client"
      ],
      "language": "python",
@@ -69,8 +70,8
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "print \"Submitted tasks:\", hello.msg_ids + world.msg_ids\n",
-      "print hello.get(), world.get()"
+      "print(\"Submitted tasks:\", hello.msg_ids + world.msg_ids)\n",
+      "print(hello.get(), world.get())"
      ],
      "language": "python",
      "metadata": {},

examples/parallel/task1.ipynb

@@ -18,6 +18,7
      "cell_type": "code",
      "collapsed": true,
      "input": [
+      "from __future__ import print_function\n",
       "from IPython.parallel import Client"
      ],
      "language": "python",
@@ -110,7 +111,7
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "print \"a, b, c: \", ar.get()"
+      "print(\"a, b, c: \", ar.get())"
      ],
      "language": "python",
      "metadata": {},

examples/parallel/taskmap.ipynb

@@ -1,6 +1,6
 {
  "metadata": {
-  "name": "taskmap"
+  "name": ""
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -18,6 +18,7
      "cell_type": "code",
      "collapsed": true,
      "input": [
+      "from __future__ import print_function\n",
       "from IPython.parallel import Client"
      ],
      "language": "python",
@@ -42,7 +43,7
      "collapsed": false,
      "input": [
       "result = v.map(lambda x: 2*x, range(10))\n",
-      "print \"Simple, default map: \", list(result)"
+      "print(\"Simple, default map: \", list(result))"
      ],
      "language": "python",
      "metadata": {},
@@ -69,9 +70,9
      "collapsed": false,
      "input": [
       "ar = v.map_async(lambda x: 2*x, range(10))\n",
-      "print \"Submitted tasks, got ids: \", ar.msg_ids\n",
+      "print(\"Submitted tasks, got ids: \", ar.msg_ids)\n",
       "result = ar.get()\n",
-      "print \"Using a mapper: \", result"
+      "print(\"Using a mapper: \", result)"
      ],
      "language": "python",
      "metadata": {},
@@ -95,7 +96,7
       "def f(x): return 2*x\n",
       "\n",
       "result = f.map(range(10))\n",
-      "print \"Using a parallel function: \", result"
+      "print(\"Using a parallel function: \", result)"
      ],
      "language": "python",
      "metadata": {},