# pytudes *Etudes* are exercises to practice or demonstrate skills, long used by piano players. This project contains **pytudes**—Python programs to practice or demonstrate skills. Index of Python Files ==== | **File** | **Description** | **Documentation**| |:--------|:-------------------|----| |[SET.py](https://github.com/norvig/pytudes/blob/master/SET.py)|Analyze the card game [SET](http://www.setgame.com/set).|[SET.html](http://norvig.com/SET.html)| |[beal.py](https://github.com/norvig/pytudes/blob/master/beal.py)|Search for counterexamples to Beal's Conjecture|[beal.html](http://norvig.com/beal.html) |[docex.py](https://github.com/norvig/pytudes/blob/master/docex.py)|A framework for running unit tests, similar to `doctest`.| |[ibol.py](https://github.com/norvig/pytudes/blob/master/ibol.py)|An Exercise in Species Barcoding|[ibol.html](http://norvig.com/ibol.html) |[lettercount.py](https://github.com/norvig/pytudes/blob/master/lettercount.py)|Convert Google Ngram Counts to Letter Counts|[mayzner.html](http://norvig.com/mayzner.html) |[lis.py](https://github.com/norvig/pytudes/blob/master/lis.py)|Lisp Interpreter written in Python|[lispy.html](http://norvig.com/lispy.html) |[lispy.py](https://github.com/norvig/pytudes/blob/master/lispy.py)|Even Better Lisp Interpreter written in Python|[lispy2.html](http://norvig.com/lispy2.html) |[lispytest.py](https://github.com/norvig/pytudes/blob/master/lispytest.py)|Tests for Lisp Interpreters| |[pal.py](https://github.com/norvig/pytudes/blob/master/pal.py)|Find long palindromes|[palindrome.html](http://norvig.com/palindrome.html) |[pal2.py](https://github.com/norvig/pytudes/blob/master/pal2.py)|Find longer palindromes|[palindrome.html](http://norvig.com/palindrome.html) |[pal3.py](https://github.com/norvig/pytudes/blob/master/pal3.py)|Find even longer palindromes|[palindrome.html](http://norvig.com/palindrome.html) |[py2html.py](https://github.com/norvig/pytudes/blob/master/py2html.py)|Pretty-printer to format Python files as html| |[spell.py](https://github.com/norvig/pytudes/blob/master/spell.py)|Spelling corrector|[spell-correct.html](http://norvig.com/spell-correct.html) |[sudoku.py](https://github.com/norvig/pytudes/blob/master/sudoku.py)|Program to solve sudoku puzzles|[sudoku.html](http://norvig.com/sudoku.html) |[testaccum.py](https://github.com/norvig/pytudes/blob/master/testaccum.py)|Tests for my failed Python `accumulation display` proposal|[pyacc.html](http://norvig.com/pyacc.html) |[yaptu.py](https://github.com/norvig/pytudes/blob/master/yaptu.py)|Yet Another Python Templating Utility|