{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from distutils.version import LooseVersion as Version\n",
    "import sys\n",
    "\n",
    "\n",
    "OK = '\\x1b[42m[ OK ]\\x1b[0m'\n",
    "FAIL = \"\\x1b[41m[FAIL]\\x1b[0m\"\n",
    "\n",
    "try:\n",
    "    import importlib\n",
    "except ImportError:\n",
    "    print(FAIL, \"Python version 3.5 is required,\"\n",
    "                \" but %s is installed.\" % sys.version)\n",
    "\n",
    "    \n",
    "def import_version(pkg, min_ver, fail_msg=\"\"):\n",
    "    mod = None\n",
    "    try:\n",
    "        mod = importlib.import_module(pkg)\n",
    "        ver = mod.__version__\n",
    "        if Version(ver) < min_ver:\n",
    "            print(FAIL, \"%s version %s or higher required, but %s installed.\"\n",
    "                  % (lib, min_ver, ver))\n",
    "        else:\n",
    "            print(OK, '%s version %s' % (pkg, ver))\n",
    "    except ImportError:\n",
    "        print(FAIL, '%s not installed. %s' % (pkg, fail_msg))\n",
    "    return mod\n",
    "\n",
    "\n",
    "# first check the python version\n",
    "print('Using python in', sys.prefix)\n",
    "print(sys.version)\n",
    "pyversion = Version(sys.version)\n",
    "if pyversion < \"3.5\":\n",
    "    print(FAIL, \"Python version 3.5 is required,\"\n",
    "                \" but %s is installed.\" % sys.version)\n",
    "print()\n",
    "requirements = {'numpy': \"1.6.1\", 'scipy': \"1.0\", 'matplotlib': \"2.0\",\n",
    "                'IPython': \"3.0\", 'sklearn': \"0.22.1\", 'pandas': \"0.18\"}\n",
    "\n",
    "# now the dependencies\n",
    "for lib, required_version in list(requirements.items()):\n",
    "    import_version(lib, required_version)"
   ]
  }
 ],
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