intro-to-python/02_functions_02_exercises.ipynb

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    "# Chapter 2: Functions & Modularization"
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   "source": [
    "## Coding Exercises"
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    "Read [Chapter 2](https://nbviewer.jupyter.org/github/webartifex/intro-to-python/blob/master/02_functions_00_lecture.ipynb) of the book. Then, work through the exercises below. The `...` indicate where you need to fill in your answers. You should not need to create any additional code cells."
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    "### Volume of a Sphere"
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    "**Q1**: The [volume of a sphere](https://en.wikipedia.org/wiki/Sphere) is defined as $\\frac{4}{3} * \\pi * r^3$. Calculate this value for $r=10.0$ and round it to 10 digits after the comma. Use the [standard library](https://docs.python.org/3/library/index.html) to obtain a good approximation of $\\pi$."
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    "import ..."
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    "r = ..."
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    "..."
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    "**Q2**: Encapsulate the logic into a function `sphere_volume()` that takes one *positional* argument `radius` and one *keyword-only* argument `digits` defaulting to `5`. The volume should be returned as a `float` object under *all* circumstances. Document your work appropriately in a docstring according to [Google's Python Style Guide](https://github.com/google/styleguide/blob/gh-pages/pyguide.md)."
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    "def sphere_volume(...):\n",
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    "**Q3**: Evaluate the function with `radius = 100.0` and 1, 5, 10, 15, and 20 digits respectively."
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    "radius = ..."
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    "sphere_volume(...)"
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    "sphere_volume(...)"
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    "sphere_volume(...)"
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    "sphere_volume(...)"
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    "sphere_volume(...)"
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   "source": [
    "**Q4**: What observation do you make?"
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    " "
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    "**Q5**: Using the [range()](https://docs.python.org/3/library/functions.html#func-range) built-in, write a `for`-loop and calculate the volume of a sphere with `radius = 42.0` for all `digits` from `1` through `20`. Print out each volume on a separate line.\n",
    "\n",
    "Note: This is the first task where you need to use the built-in [print()](https://docs.python.org/3/library/functions.html#print) function."
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    "radius = ..."
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    "for ... in ...:\n",
    "    ..."
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   "source": [
    "**Q6**: What lesson do you learn about the `float` type?"
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    " "
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