Fix failing example

Author: gpleiss

examples/045_GPLVM/3PhData.tar.gz

@@ -33,15 +33,11 @@
    "source": [
     "# Standard imports\n",
     "import matplotlib.pylab as plt\n",
-    "import torch \n",
+    "import torch\n",
     "import os\n",
     "import numpy as np\n",
     "from pathlib import Path\n",
     "\n",
-    "# If you are running this notebook interactively\n",
-    "wdir = Path(os.path.abspath('')).parent.parent\n",
-    "os.chdir(wdir)\n",
-    "\n",
     "# gpytorch imports\n",
     "from gpytorch.mlls import VariationalELBO\n",
     "from gpytorch.priors import NormalPrior\n",
@@ -74,13 +70,11 @@
     "import urllib.request\n",
     "import tarfile\n",
     "\n",
-    "url = \"http://staffwww.dcs.shef.ac.uk/people/N.Lawrence/resources/3PhData.tar.gz\"\n",
-    "urllib.request.urlretrieve(url, '3PhData.tar.gz')\n",
     "with tarfile.open('3PhData.tar.gz', 'r') as f:\n",
     "    f.extract('DataTrn.txt')\n",
     "    f.extract('DataTrnLbls.txt')\n",
     "\n",
-    "Y = torch.Tensor(np.loadtxt(fname='DataTrn.txt')) \n",
+    "Y = torch.Tensor(np.loadtxt(fname='DataTrn.txt'))\n",
     "labels = torch.Tensor(np.loadtxt(fname='DataTrnLbls.txt'))\n",
     "labels = (labels @ np.diag([1, 2, 3])).sum(axis=1)"
    ]