Python programs, usually short, of considerable difficulty, to perfect particular skills.

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Readme

MIT License

2015-2020

"An *étude* (a French word meaning *study*) is an instrumental musical composition, usually short,
of considerable difficulty, and designed to provide practice material for perfecting a particular
musical skill." — Wikipedia

This project contains **pytudes**—Python programs, usually short, for perfecting particular programming skills.
Many of the *problems* are difficult, but I hope that the *solutions* are easy to follow.
Some programs are in Jupyter (

.ipynb) notebooks, some in

.pyfiles. For each notebook you can: - Click on c to

|Run|Year|Programming Examples|
|---|---|---|
| c d m n g | 2018 | **Advent of Code 2018** |
| c d m n g | 2017 | **Advent of Code 2017** |
| c d m n g | 2016 | **Advent of Code 2016** |
| c d m n g | 2018 | **Beal's Conjecture Revisited** |
| c d m n g | 2020 | **Bike Speed Versus Grade** |
| c d m n g | 2018 | **Can't Stop** |
| c d m n g | 2019 | **Chaos with Triangles** |
| c d m n g | 2017 | **Conway's Game of Life** |
| c d m n g | 2018 | **c d m n g | 2020 | Generating and Solving Mazes |
| c d m n g | 2020 | Photo Focal Lengths |
| c d m n g | 2018 | Pickleball Tournament |
| c d m n g | 2017 | Project Euler Utilities |
| c d m n g | 2020 | Tracking Trump: Electoral Votes |**

|Run|Year|Logic and Number Puzzles|
|---|---|---|
| c d m n g | 2014 | **Cryptarithmetic** |
| c d m n g | 2020 | **Equilength Number Expressions** |
| c d m n g | 2020 | **Making Numbers: Four 4s, Five 5s, and Countdowns** |
| c d m n g | 2019 | **Pairing Socks** |
| c d m n g | 2018 | **Sicherman Dice** |
| c d m n g | 2014 | **Sol Golomb's Rectangle Puzzle** |
| c d m n g | 2020 | **When is Cheryl's Birthday? (new: Mad Cheryl)** |
| c d m n g | 2015 | **When Cheryl Met Eve: A Birthday Story** |
| c d m n g | 2015 | **xkcd 1313: Regex Golf** |
| c d m n g | 2015 | **xkcd 1313: Regex Golf (Part 2: Infinite Problems)** |

|Run|Year|Word Puzzles|
|---|---|---|
| c d m n g | 2020 | **Boggle / Inverse Boggle** |
| c d m n g | 2020 | **Chemical Element Spelling** |
| c d m n g | 2017 | **Gesture Typing** |
| c d m n g | 2017 | **Ghost: A Word game** |
| c d m n g | 2018 | **How to Do Things with Words: NLP in Python** |
| c d m n g | 2020 | **Jotto: A Word Guessing Game** |
| c d m n g | 2015 | **Let's Code About Bike Locks** |
| c d m n g | 2017 | **Scrabble: Refactoring a Crossword Game Program** |
| c d m n g | 2020 | **Spelling Bee** |
| c d m n g | 2017 | **Translating English into Propositional Logic** |
| c d m n g | 2017 | **World's Longest Palindrome** |
| c d m n g | 2020 | **World's Shortest Portmantout Word** |
| c d m n g | 2018 | **xkcd 1970: Name Dominoes** |

|Run|Year|The Riddler (from 538)|
|---|---|---|
| c d m n g | 2017 | **Riddler: Battle Royale** |
| c d m n g | 2020 | **Riddler: Flipping Cards; A Guessing Game** |
| c d m n g | 2019 | **Riddler: Lottery** |
| c d m n g | 2019 | **Riddler: How Many Soldiers to Beat the Night King?** |
| c d m n g | 2018 | **Riddler: Properly Ordered Card Hands** |
| c d m n g | 2017 | **Riddler: The Puzzle of the Misanthropic Neighbors** |
| c d m n g | 2020 | **Riddler: Tour de 538** |
| c d m n g | 2020 | **Riddler: War. What is it Good for?** |
| c d m n g | 2020 | **Riddler: Weighing Twelve Balls** |

|Run|Year|Probability, Uncertainty, and Counting|
|---|---|---|
| c d m n g | 2018 | **A Concrete Introduction to Probability** |
| c d m n g | 2016 | **Probability, Paradox, and the Reasonable Person Principle** |
| c d m n g | 2020 | **Estimating Probabilities with Simulations** |
| c d m n g | 2019 | **The Devil and the Coin Flip Game** |
| c d m n g | 2020 | **Dice Baseball** |
| c d m n g | 2018 | **Economics Simulation** |
| c d m n g | 2020 | **How to Count Things** |
| c d m n g | 2020 | **The Unfinished Game .... of Risk** |
| c d m n g | 2019 | **WWW: Who Will Win (NBA Title)?** |

|Run|Year|Computer Science Algorithms and Concepts|
|---|---|---|
| c d m n g | 2017 | **Bad Grade, Good Experience** |
| c d m n g | 2017 | **BASIC Interpreter** |
| c d m n g | 2017 | **The Convex Hull Problem** |
| c d m n g | 2020 | **The Stable Matching Problem** |
| c d m n g | 2017 | **Symbolic Algebra, Simplification, and Differentiation** |
| c d m n g | 2018 | **The Traveling Salesperson Problem** |

| File | Description | Documentation |
|---|---|---|
|beal.py|*Search for counterexamples to Beal's Conjecture*|documentation|
|docex.py|*An obsolete framework for running unit tests, similar to *

|| |ibol.py|doctest

accumulation displayproposal

I got the idea for the *"etudes"* part of the name from
this 1978 book
by Charles Wetherell
that was very influential to me when I was first learning to program. I still have my copy.