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MetaProgramming in Python3

1. Purpose

I am going to implement a ORM in Python3. This work requires a lot of knowledge in magic methods of Python, known as MetaProgramming.

1.1 What is ORM ?

ORM means Object-relational mapping, for whom has interest, please consult the Wikipedia.

In a few words, ORM try to mapping Relational model to Object-oriented model. There are some rules:

  • One table maps to One class
  • Row in table maps to instance of class
  • Columns in table map to attributes type of class

1.2 Any ORM package already ?

Yes, quite a lot.

  • SQLAlchemy
  • Django ORM
  • peewee
  • ...

1.3 Why a new one ?

Well, I want to do some cool things in Python, and share whole learning progress to others. So, I think ORM is a good choice and I could eat myself's dog foot.

2. First Step