Software Alternatives & Reviews

PyPy VS Cython

Compare PyPy VS Cython and see what are their differences

PyPy logo PyPy

PyPy is a fast, compliant alternative implementation of the Python language (2.7.1).

Cython logo Cython

Cython is a language that makes writing C extensions for the Python language as easy as Python...
  • PyPy Landing page
    Landing page //
    2023-10-15
  • Cython Landing page
    Landing page //
    2023-10-15

PyPy videos

PyPy - the hero we all deserve. - Amit Ripshtos - PyCon Israel 2019

More videos:

  • Review - Using the PyPy runtime for Python
  • Review - How PyPy runs your program

Cython videos

Stefan Behnel - Get up to speed with Cython 3.0

More videos:

  • Review - Cython: A First Look
  • Review - Simmi Mourya - Scientific computing using Cython: Best of both Worlds!

Category Popularity

0-100% (relative to PyPy and Cython)
Website Builder
32 32%
68% 68
Website Design
25 25%
75% 75
CMS
33 33%
67% 67
Programming Language
30 30%
70% 70

User comments

Share your experience with using PyPy and Cython. For example, how are they different and which one is better?
Log in or Post with

Social recommendations and mentions

Based on our record, Cython seems to be a lot more popular than PyPy. While we know about 47 links to Cython, we've tracked only 4 mentions of PyPy. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

PyPy mentions (4)

  • Python 3.12: A Game-Changer in Performance and Efficiency
    If you r looking for performance with almost fully supported C Extensions , pypy.org for you , 20x faster than cpython still. Source: about 1 year ago
  • What change should Python 4 bring, in your opinion?
    I think you never heard of PyPy it is drop in replacable python written in Python and It is jit avg 5x faster than Python , 20x faster in some cases. Https://pypy.org. Source: almost 2 years ago
  • 4x smaller, 50x faster
    Well, pypy is a thing. Of course, your overall point still stands. Source: over 2 years ago
  • Microsoft is hiring, looking to speed up cpython
    Why don't they just sponsor pypy.org ? Its already 4x faster in average , 20x in many cases. We are using in 4 of our projects with one of them 10k active concurrent connections max , and its absolutely amazing. Its a realtime telemedince/chatroom (OnDoctor check in playstore). And we host it on 40$ Digital ocean machine. A lot less memory usage and so much faster. Source: almost 3 years ago

Cython mentions (47)

  • Ask HN: C/C++ developer wanting to learn efficient Python
    Https://cython.org can help with that. - Source: Hacker News / 16 days ago
  • How to make a c++ python extension?
    The approach that I favour is to use Cython. The nice thing with this approach is that your code is still written as (almost) Python, but so long as you define all required types correctly it will automatically create the C extension for you. Early versions of Cython required using Cython specific typing (Python didn't have type hints when Cython was created), but it can now use Python's type hints. Source: 11 months ago
  • Codon: Python Compiler
    Just for reference, * Nuitka[0] "is a Python compiler written in Python. It's fully compatible with Python 2.6, 2.7, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, and 3.11." * Pypy[1] "is a replacement for CPython" with builtin optimizations such as on the fly JIT compiles. * Cython[2] "is an optimising static compiler for both the Python programming language and the extended Cython programming language... Makes writing C... - Source: Hacker News / 12 months ago
  • Any faster Python alternatives?
    Profile and optimize the hotspots with cython (or whatever the cool kids are using these days... It's been a while.). Source: about 1 year ago
  • What exactly is 'JIT'?
    JIT essentially means generating machine code for the language on the fly, either during loading of the interpreter (method JIT), or by profiling and optimizing hotspots (tracing JIT). The language itself can be statically or dynamically typed. You could also compile a dynamic language ahead of time, for example, cython. Source: about 1 year ago
View more

What are some alternatives?

When comparing PyPy and Cython, you can also consider the following products

cx_Freeze - cx_Freeze is a set of scripts and modules for freezing Python scripts into executables in much the...

Numba - Numba gives you the power to speed up your applications with high performance functions written...

PyInstaller - PyInstaller is a program that freezes (packages) Python programs into stand-alone executables...

nuitka - Nuitka is a Python compiler.

bbfreeze - create stand-alone executables from python scripts

py2exe - A distutils extension to create standalone Windows programs from Python scripts.