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 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Before you turn in this homework, make sure everything runs as expected. First, **restart the kernel** (in the menubar, select Kernel$\\rightarrow$Restart) and then **run all cells** (in the menubar, select Cell$\\rightarrow$Run All).\n",
    "\n",
    "Make sure you execute every single code cell, in order, filling with your solutions in any place that says `YOUR CODE HERE`, and always DELETE the line that says:\n",
    "\n",
    "```python\n",
    "raise NotImplementedError()\n",
    "```\n",
    "The purpose of this line is to tell you if you forgot to answer a question (it will throw an error if the line is there)\n",
    "\n",
    "**IMPORTANT**: DO NOT DELETE ANY CELL.\n",
    "\n",
    "Fill your name below:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "NAME = \"\""
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Accessing values of a list and slicing strings. \n",
    "\n",
    "Given the list named `pizzas`:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "pizzas = ['cheese', 'pepperoni', 'margherita', 'hawaiian', 'italian sausage', 'green peppers and onions']"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### 1)\n",
    "\n",
    "Grab the first flavor, assign the value to a variable named `first_flavor`, and print it."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "cheese\n"
     ]
    }
   ],
   "source": [
    "### BEGIN SOLUTION\n",
    "first_flavor = pizzas[0]\n",
    "print(first_flavor)\n",
    "### END SOLUTION"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "#BEGIN HIDDEN TESTS\n",
    "from nose.tools import assert_equal\n",
    "\n",
    "assert_equal(first_flavor, 'cheese')\n",
    "#END HIDDEN TESTS"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### 2)\n",
    "\n",
    "Grab the last flavor, assign the value to a variable named `last_flavor`, and print it."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "green peppers and onions\n"
     ]
    }
   ],
   "source": [
    "### BEGIN SOLUTION\n",
    "last_flavor = pizzas[-1]\n",
    "print(last_flavor)\n",
    "### END SOLUTION"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [],
   "source": [
    "#BEGIN HIDDEN TESTS\n",
    "assert_equal(last_flavor, 'green peppers and onions')\n",
    "#END HIDDEN TESTS"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### 3)\n",
    "\n",
    "Access the element of the pizza list that corresponds to 'pepperoni', replace it for 'mushroom', and print the pizzas list."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['cheese', 'mushroom', 'margherita', 'hawaiian', 'italian sausage', 'green peppers and onions']\n"
     ]
    }
   ],
   "source": [
    "### BEGIN SOLUTION\n",
    "pizzas[1] = 'mushroom'\n",
    "print(pizzas)\n",
    "### END SOLUTION"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "#BEGIN HIDDEN TESTS\n",
    "assert_equal(pizzas, ['cheese', 'mushroom', 'margherita', 'hawaiian', 'italian sausage', 'green peppers and onions'])\n",
    "assert_equal(pizzas[1], 'mushroom')\n",
    "#END HIDDEN TESTS"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Remember!!\n",
    "\n",
    "Before you turn this problem in, make sure everything runs as expected. First, restart the kernel (in the menubar, select Kernel→→Restart) and then run all cells (in the menubar, select Cell→→Run All).\n",
    "\n",
    "Make sure you filled in any place that says YOUR CODE HERE or \"YOUR ANSWER HERE\", as well as your name at the beggining of the notebook."
   ]
  }
 ],
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