add create flight data

Author: Ray Bell

04_dataframe.ipynb

@@ -43,6 +43,22 @@
     "2.  The partitioning of dataframes is important for efficient execution"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Create data"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%run prep.py -d flights"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -815,7 +831,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.7.6"
   }
  },
  "nbformat": 4,