example-spy-downloader.ipynb

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    "## Jupyter + Downloading the SPY Pricing Data\n",
    "\n",
    "Download the SPY ETF Pricing Data from Google Finance and store it in the shared ```ENV_PYTHON_SRC_DIR``` directory that is mounted from the host and into the Jupyter container. It uses a script that downloads the SPY daily pricing data as a csv file.\n"
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    "import os, sys, json\n",
    "\n",
    "sys.path.insert(0, os.getenv('ENV_PYTHON_SRC_DIR', '/opt/work/src'))\n",
    "\n",
    "from pycore import PyCore\n",
    "\n",
    "print 'Initializing Python Core'\n",
    "core = PyCore()\n",
    "\n",
    "# the downloader is hardcoded for now to download to this shared volume + file location:\n",
    "csv_file = '/opt/work/data/src/spy.csv'\n",
    "\n",
    "# removing previous csv file if it exists\n",
    "if os.path.exists(csv_file):\n",
    "    core.lg('Removing Previous(' + str(csv_file) + ')')\n",
    "    os.system('rm -f ' + str(csv_file) + ')')\n",
    "# end of removing previous\n",
    "\n",
    "downloader_name    = 'download-spy-csv.py'\n",
    "path_to_downloader = os.getenv('ENV_BINS', '/opt/work/bins/') + '/' + downloader_name\n",
    "\n",
    "core.lg('Downloading latest SPY Pricing with Download(' + str(path_to_downloader) + ')', 2)\n",
    "os.system(path_to_downloader)\n",
    "\n",
    "core.lg('')\n",
    "core.lg('Checking CSV is Ready')\n",
    "if os.path.exists(csv_file):\n",
    "    core.lg('  SUCCESS - File Exists: ' + str(csv_file), 5)\n",
    "else:\n",
    "    core.lg('  ERROR: Failed to find CSV(' + str(csv_file) + ')', 0)\n",
    "# end of if/else download was successful\n"
   ]
  }
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