PyPy is a very fast and compliant implementation of the Python language.
See the code=====================================
PyPy: Python in Python Implementation
=====================================
Welcome to PyPy!
PyPy is an interpreter that implements the Python programming language, based
on the RPython compiler framework for dynamic language implementations.
The home page for the interpreter is:
https://pypy.org/
If you want to help developing PyPy, this documentation might help you:
https://doc.pypy.org/
More documentation about the RPython framework can be found here:
https://rpython.readthedocs.io/
The source for the documentation is in the pypy/doc directory.
Using PyPy instead of CPython
-----------------------------
Please read the information at https://pypy.org/ to find the correct way to
download and use PyPy as an alternative to CPython.
Building
--------
Building PyPy is not the recommended way to obtain the PyPy alternative python
interpreter. It is time-consuming and requires significant computing resources.
More information can be found here:
https://doc.pypy.org/build.html
Enjoy and send us feedback!
the pypy-dev team <pypy-dev@python.org>
Not written in Markdown, so it's shown here as plain text — view it formatted on GitHub.
(top 24 of 64)
1,208 followers · starred Jan 2024
3,475 followers · starred Jul 2026
944 followers · starred Jan 2024
670 followers · starred Nov 2025
PyPy is a very fast and compliant implementation of the Python language.
See the code=====================================
PyPy: Python in Python Implementation
=====================================
Welcome to PyPy!
PyPy is an interpreter that implements the Python programming language, based
on the RPython compiler framework for dynamic language implementations.
The home page for the interpreter is:
https://pypy.org/
If you want to help developing PyPy, this documentation might help you:
https://doc.pypy.org/
More documentation about the RPython framework can be found here:
https://rpython.readthedocs.io/
The source for the documentation is in the pypy/doc directory.
Using PyPy instead of CPython
-----------------------------
Please read the information at https://pypy.org/ to find the correct way to
download and use PyPy as an alternative to CPython.
Building
--------
Building PyPy is not the recommended way to obtain the PyPy alternative python
interpreter. It is time-consuming and requires significant computing resources.
More information can be found here:
https://doc.pypy.org/build.html
Enjoy and send us feedback!
the pypy-dev team <pypy-dev@python.org>
Not written in Markdown, so it's shown here as plain text — view it formatted on GitHub.
(top 24 of 64)
1,208 followers · starred Jan 2024
3,475 followers · starred Jul 2026
944 followers · starred Jan 2024
670 followers · starred Nov 2025