A tiny expression parsing tutorial

This is a tutorial on how to build a small calculator/expression evaluator in python.

This tutorial simplifies some things, so there is no prior knowledge in compilers/parsers needed.

Prerequisites

• some basic python knowledge

Run main.py for a quick demo. The final code can be found here.

Start the tutorial

Chapters

• Goals
• Structure&AST
• Parser Layout
• Parser Implementation
• AST Nodes Parsing
• Evaluation
• Conclusion