Dagur Arinbjörn Daníelsson gardyna
gardyna
/ reverse_polish_evaluator.py
Last active
September 28, 2019 06:20
— forked from viebel/reverse_polish_evaluator.py
reverse polish evaluator in python
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| # This example assumes binary operators, but this is easy to extend. | |
| # Comes from this excellent article: http://blog.reverberate.org/2013/07/ll-and-lr-parsing-demystified.html | |
| ops = { | |
| "+": (lambda a, b: a + b), | |
| "-": (lambda a, b: a - b), | |
| "*": (lambda a, b: a * b), | |
| "/": (lambda a, b: a / b) | |
| } | |
| def eval(expression): |