CommonLispKoans（lisp-koans）是一个语言学习练习程序，类似rubykoans，pythonkoans等等。CommonLispKoans主要是帮助学习一些lisp规范特性和改进，可以学习到大量的CommonLisp语言特性。
终端，在文件'contemplate.lsp'执行lisp解析器：
sbcl --script contemplate.lsp运行再一个新版本会输出：unningonafreshversionshouldoutputthefollowing:
Thinking about ASSERTS ASSERT-TRUE requires more meditation.You have not yet reached enlightenment ... A koan is incomplete.Please meditate on the following code: File "koans/asserts.lsp" Koan "ASSERT-TRUE" Current koan assert status is "(INCOMPLETE)"You are now 0/169 koans and 0/25 lessons closer to reaching enlightenment
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