immutability.ipynb

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        "<a href=\"https://colab.research.google.com/github/noahgift/functional_intro_to_python/blob/master/immutability.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
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      "source": [
        "![Unbreakable concepts in Python](https://user-images.githubusercontent.com/58792/47947414-44e61900-ded9-11e8-9891-d357b65cfcf5.jpg)"
      ]
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      "source": [
        "## Example of Immutability via Objects"
      ]
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      "source": [
        "class Foo:\n",
        "  \n",
        "  @property\n",
        "  def unbreakable(self):\n",
        "    return \"David\"\n",
        "\n"
      ],
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      "outputs": []
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      "cell_type": "code",
      "source": [
        "foo = Foo()\n",
        "foo.unbreakable"
      ],
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      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "'True'"
            ]
          },
          "metadata": {
            "tags": []
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          "execution_count": 8
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      "cell_type": "code",
      "source": [
        "foo.not_unbreakable = \"Elijah\""
      ],
      "execution_count": 0,
      "outputs": []
    },
    {
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        "id": "VuSZ9Y49egiO",
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      "cell_type": "markdown",
      "source": [
        "@property acts like an read only attribute, but it isn't"
      ]
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      "cell_type": "code",
      "source": [
        "foo.__dict__"
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      "execution_count": 0,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "{'not_unbreakable': 'Elijah'}"
            ]
          },
          "metadata": {
            "tags": []
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          "execution_count": 10
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      "source": [
        "You can change an attribute on the object, but not the read only property"
      ]
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      "cell_type": "code",
      "source": [
        "foo.not_unbreakable = \"Mr. Glass\""
      ],
      "execution_count": 0,
      "outputs": []
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      "cell_type": "code",
      "source": [
        "foo.unbreakable = \"Bruce Willis\""
      ],
      "execution_count": 0,
      "outputs": [
        {
          "output_type": "error",
          "ename": "AttributeError",
          "evalue": "ignored",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-12-4bc1ea5ae699>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mfoo\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0munbreakable\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m\"Bruce Willis\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mAttributeError\u001b[0m: can't set attribute"
          ]
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        ""
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