Python implementation for Understanding Computation.

Understanding Computation is an awesome book about computation theory, which explains profound and complicated concepts by using short and concise Ruby code snippets.

I don't want to evangelize, but if you are curious about how a program functions, you must read this book. It's just like SICP's ruby version in a way, yet with much more fun.

I just implemented equivalent codes from chapter to chapter, those contents are:

1. Two kinds of interpreters for a simple language with a parser based on lark

2. Generating Python code for this language instead of Ruby (Because Python's anonymous functions are quite more limited than Ruby, there are some hacks like Y-combinator)

3. Simulating automata such as DFA, NFA, PDA

4. Using automata to build a simple regular expression engine

5. Simulating a Turing machine

6. Lambda calculus and Church numbers

7. Stay tuned..

Python 3.10+