Customizing Python

A series of step-by-step tutorials of CPython customizing. Each focuses on understanding CPython internals, and highlights different parts of the interpreter.

Pipe operator

We will add an |> operator to the CPython interpreter to perform bash-like chain calls.

>>> [1, 2] |> map(lambda x: x * 2) |> list()

[2, 4]

The tutorial covers python grammar, parsing and compilation to bytecode.

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Tail call optimization

The goal is to implement tail-call optimization in the python interpreter.

>>> def u(i):
        if i == 0:
            return 'a'
        return u(i - 1)

>>> u(10000)
'a'

The tutorial covers creation a of new bytecode, flowgraph optimization, and evaluation of Python programs.

Read the tutorial

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Pavel Kolchanov, 2024