Arithmetic evaluation: Difference between revisions
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There are python modules, such as Ply, which facilitate the implementation of parsers. This example, however, uses only standard Python with the parser having |
There are python modules, such as Ply, which facilitate the implementation of parsers. This example, however, uses only standard Python with the parser having |
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two stacks, one for operators, one for operands. |
two stacks, one for operators, one for operands. |
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<lang |
<lang python>import operator |
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class AstNode(object): |
class AstNode(object): |