README.md

scheme-evaluator

A toy scheme evaluator implemented by python3, features:

• varible and function
• expression
• lambda expression
• closure

How to run

Run evaluator.py：

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Input Expression:

(define x 34)
ok

End Evaluation
--------------------

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Input Expression:

(+ x 5 7 8)
54

End Evaluation
--------------------

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Input Expression:

(define (add-six x) (+ x 6))
ok

End Evaluation
--------------------

--------------------

Input Expression:

(add-six x)
40

End Evaluation
--------------------