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 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Using [`click`](https://github.com/pallets/click) interactively\n",
    "\n",
    "We all know that `argparse` sucks, and `click` is a common replacement.\n",
    "\n",
    "See the `click` documentation for the more information about [__Complex Arguments__](http://click.pocoo.org/5/complex/#calling-convention). "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "    import click"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "    @click.command()\n",
    "    @click.option('--count', default=1, help='Number of greetings.')\n",
    "    @click.option('--name', prompt='Your name',\n",
    "                  help='The person to greet.')\n",
    "    def hello(count, name):\n",
    "        \"\"\"Simple program that greets NAME for a total of COUNT times.\"\"\"\n",
    "        for x in range(count):\n",
    "            print('Hello! %s!' % name)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "* Create an a `click.Context` "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "    from pytest import fixture\n",
    "    ctx = fixture(lambda: click.Context(hello))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "* `click.Context.invoke` the command."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello! ❤ deathbeds!\n"
     ]
    }
   ],
   "source": [
    "    _test_interactive_invocation = lambda ctx: ctx.invoke(hello, name=\"❤ deathbeds\")\n",
    "    __name__ == '__main__' and _test_interactive_invocation(ctx())"
   ]
  }
 ],
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