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   "source": [
    "# Chapter 3: Conditionals & Exceptions (Review Questions)"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The questions below assume that you have read [Chapter 3 <img height=\"12\" style=\"display: inline-block\" src=\"../static/link/to_nb.png\">](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/main/03_conditionals/00_content.ipynb).\n",
    "\n",
    "Be concise in your answers! Most questions can be answered in *one* sentence."
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Essay Questions "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Q1**: What is the **singleton** design pattern? How many objects does the expression `[True, False, True, False]` generate in memory?"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
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   "cell_type": "markdown",
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   "source": [
    "**Q2**: What do we mean when we talk about **truthy** and **falsy** expressions?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
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   "cell_type": "markdown",
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   "source": [
    "**Q3**: Describe in your own words the concept of **short-circuiting**! What does it imply for an individual sub-expression in a boolean expression?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
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   "cell_type": "markdown",
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   "source": [
    "**Q4**: Explain how the conceptual difference between a **statement** and an **expression** relates to the difference between a **conditional statement** and a **conditional expression**."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Q5**: Why is the use of **temporary variables** encouraged in Python?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
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   "cell_type": "markdown",
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   "source": [
    "**Q6**: What does the `finally`-clause enforce in this code snippet? How can a `try` statement be useful *without* an `except`-clause?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "```python\n",
    "try:\n",
    "    print(\"Make a request to a service on the internet\")\n",
    "finally:\n",
    "    print(\"This could be clean-up code\")\n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## True / False Questions"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Motivate your answer with *one short* sentence!"
   ]
  },
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Q7**: The objects `True`, `False`, and `None` represent the idea of *yes*, *no*, and *maybe* answers in a natural language.\n",
    "\n",
    "Hint: you also respond with a code cell."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Q8**: The `try` statement is useful for handling **syntax** errors."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    " < your answer >"
   ]
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