{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 1. [Rock-paper-scissors](https://en.wikipedia.org/wiki/Rock%E2%80%93paper%E2%80%93scissors) \n",
    "Implement `rock_paper_scissors` function which takes the player's rock-paper-scissors choice as an input (as integer), randomly selects the choice of the computer and reveals it (prints) and finally announces (prints) the result. The function should return `PLAYER_WINS`, `COMPUTER_WINS` or `TIE`."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "editable": false
   },
   "outputs": [],
   "source": [
    "# Constants, you should use these in your implementation\n",
    "ROCK = 1\n",
    "PAPER = 2\n",
    "SCISSORS = 3\n",
    "\n",
    "PLAYER_WINS = 'Player wins!! Woop woop!'\n",
    "COMPUTER_WINS = 'Robocop wins :-('\n",
    "TIE = \"It's a tie!\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Your implementation here\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Once you have finished the implementation of `rock_paper_scissors` function, you can check if it works as expected by playing the game:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "def play_rps():\n",
    "    print('Welcome to play rock-paper-scissors')\n",
    "    print('The options are:\\nrock: 1\\npaper: 2\\nscissors: 3')\n",
    "\n",
    "    result = TIE\n",
    "    while result == TIE:\n",
    "        player_choice = input('Give your choice\\n')\n",
    "        \n",
    "        if not player_choice in ['1', '2', '3']:\n",
    "            print('Invalid choice')\n",
    "            continue\n",
    "            \n",
    "        result = rock_paper_scissors(int(player_choice))\n",
    "        \n",
    "if __name__ == '__main__':\n",
    "    play_rps()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "If you copy the code from above cells into a single .py file, you have a rock-paper-scissor command line game!"
   ]
  }
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