Import pandas for loading SP500.csv (#3644)

ajaalto · ColCarroll · commit f1ae1b39a68f · 2019-10-08T14:26:42.000-04:00
diff --git a/docs/source/notebooks/stochastic_volatility.ipynb b/docs/source/notebooks/stochastic_volatility.ipynb
@@ -17,6 +17,7 @@
     "\n",
     "import numpy as np\n",
     "import matplotlib.pyplot as plt\n",
+    "import pandas as pd\n",
     "import seaborn as sns\n",
     "sns.set_context('talk')\n",
     "import pymc3 as pm\n",
