update to w_2021_40 and warnings filter

Author: kadrlica

04_Intro_to_Butler.ipynb

@@ -6,7 +6,7 @@
    "source": [
     "<img align=\"left\" src = https://project.lsst.org/sites/default/files/Rubin-O-Logo_0.png width=250 style=\"padding: 10px\"> \n",
     "<b>Introduction to the LSST data Butler</b> <br>\n",
-    "Last verified to run on 2021-08-16 with LSST Science Pipelines release w_2021_33 <br>\n",
+    "Last verified to run on 2021-10-12 with LSST Science Pipelines release w_2021_40 <br>\n",
     "Contact authors: Alex Drlica-Wagner, Melissa Graham <br>\n",
     "Target audience: All DP0 delegates. <br>\n",
     "Container Size: medium <br>\n",
@@ -59,6 +59,7 @@
    "outputs": [],
    "source": [
     "# Generic python packages\n",
+    "import warnings\n",
     "import numpy as np\n",
     "import pylab as plt\n",
     "\n",
@@ -73,13 +74,25 @@
     "afwDisplay.setDefaultBackend('matplotlib')"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# prevent some helpful but ancillary warning messages from printing\n",
+    "#   during some LSST DM Release calls\n",
+    "warnings.simplefilter(\"ignore\", category=UserWarning)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
     "# This should match the verified version listed at the start of the notebook\n",
+    "! echo $IMAGE_DESCRIPTION\n",
     "! eups list -s lsst_distrib"
    ]
   },