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Eli Bendersky: Type inference

Link: https://eli.thegreenplace.net/2018/type-inference/

Type inference is a major feature of several programming languages, most notably
languages from the ML family like Haskell. In this post I want to provide a
brief overview of type inference, along wit
Eli Bendersky: Type erasure and reification

Link: https://eli.thegreenplace.net/2018/type-erasure-and-reification/

In this post I'd like to discuss the concepts of type erasure and
reification in programming languages. I don't intend to dive very deeply into
the specific rules of any particular language; rather, t
Eli Bendersky: Faster XML stream processing in Go

Link: https://eli.thegreenplace.net/2019/faster-xml-stream-processing-in-go/

XML processing was all the rage 15 years ago; while it's less
prominent these days, it's still an important task in some application domains.
In this post I'm going to compare the speed of stream-proc
Eli Bendersky: You don't need virtualenv in Go

Link: https://eli.thegreenplace.net/2020/you-dont-need-virtualenv-in-go/

Programmers that come to Go from Python often wonder "do I need something like
virtualenv here?"
The short answer is NO; this post will provide some additional details.
While virtualenv in Python is u
Eli Bendersky: Python - paralellizing CPU-bound tasks with concurrent.futures

Link: https://eli.thegreenplace.net/2013/01/16/python-paralellizing-cpu-bound-tasks-with-concurrent-futures

A year ago, I wrote a series of posts about using the Python multiprocessing module. One of the posts contrasted compute-intensive task parallelization using threads vs. processes. Today I want to rev
Eli Bendersky: GitHub Actions: first impressions

Link: https://eli.thegreenplace.net/2020/github-actions-first-impressions/

I've been using Travis CI fairly extensively since
2013, when I moved my personal OSS projects from Bitbucket to GitHub.
It's a great service and a much-appreciated boon to the open-source community.
Eli Bendersky: Twisted-based IRC server example

Link: https://eli.thegreenplace.net/2013/01/28/twisted-based-irc-server-example

Recently I was looking for ways to play with a simple Python-based IRC bot. Like for other network-related tasks, I turned to Twisted for the answer and was pleased to find a very nice and simple bot
Eli Bendersky: Python FFI with ctypes and cffi

Link: https://eli.thegreenplace.net/2013/03/09/python-ffi-with-ctypes-and-cffi

In a previous post, I demonstrated how to use libffi to perform fully dynamic calls to C code, where "fully dynamic" means that even the types of the arguments and return values are determined at runt
Eli Bendersky: Bootstrapping virtualenv

Link: https://eli.thegreenplace.net/2013/04/20/bootstrapping-virtualenv

The packaging situation in Python is "imperfect" for a good reason - packaging is simply a very difficult problem to solve (see the amount of effort poured into Linux distribution package management f
Eli Bendersky: Python will have enums in 3.4!

Link: https://eli.thegreenplace.net/2013/05/10/python-will-have-enums-in-3-4

After months of intensive discussion (more than a 1000 emails in dozens of threads spread over two mailing lists, and a couple of hundred additional private emails), PEP 435 has been accepted and Pyth
Eli Bendersky: Right and left folds, primitive recursion patterns in Python and Haskell

Link: https://eli.thegreenplace.net/2017/right-and-left-folds-primitive-recursion-patterns-in-python-and-haskell/

A "fold" is a fundamental primitive in defining operations on data structures;
it's particularly important in functional languages where recursion is the
default tool to express repetition. In this ar
Eli Bendersky: Concurrent Servers: Part 2 - Threads

Link: https://eli.thegreenplace.net/2017/concurrent-servers-part-2-threads/

This is part 2 of a series on writing concurrent network servers. Part 1
presented the protocol implemented by the server, as well as the code for a
simple sequential server, as a baseline for the ser
Eli Bendersky: pycparser v2.09 released, project moved to BitBucket

Link: https://eli.thegreenplace.net/2012/12/27/pycparser-v2-09-released-project-moved-to-bitbucket

I've released version 2.09 of pycparser. In addition to numerous issue fixes, the two major changes for this release are:


The pycparser project has moved to BitBucket from Google Code. It's still av
Eli Bendersky: Depthwise separable convolutions for machine learning

Link: https://eli.thegreenplace.net/2018/depthwise-separable-convolutions-for-machine-learning/

Convolutions are an important tool in modern deep neural networks (DNNs). This
post is going to discuss some common types of convolutions, specifically
regular and depthwise separable convolutions. My
Eli Bendersky: Understanding how to implement a character-based RNN language model

Link: https://eli.thegreenplace.net/2018/understanding-how-to-implement-a-character-based-rnn-language-model/

In a single gist,
Andrej Karpathy did something
truly impressive. In a little over 100 lines of Python - without relying on any
heavy-weight machine learning frameworks - he presents a fairly complete
Codementor: #01 | Getting Started with Pandas

Link: https://www.codementor.io/projects196/01-getting-started-with-pandas-1xxct3wach

A clear introduction to Pandas, a Python library to manipulate tabular data, where you can discover its many possibilities and get a concise overview.
The Digital Cat: Multiple inheritance and mixin classes in Python

Link: https://www.thedigitalcatonline.com/blog/2020/03/27/mixin-classes-in-python/

I recently revisited three old posts on Django class-based views that I wrote for this blog, updating them to Django 3.0 (you can find them here) and noticed once again that the code base uses mixin c
The Digital Cat: Method overriding in Python

Link: https://www.thedigitalcatonline.com/blog/2014/05/19/method-overriding-in-python/

What is overriding? Overriding is the ability of a class to change the implementation of a method provided by one of its ancestors.Overriding is a very important part of OOP since it is the feature th
The Digital Cat: Accessing attributes in Python

Link: https://www.thedigitalcatonline.com/blog/2015/01/12/accessing-attributes-in-python/

Python is a language that tries to push the object-oriented paradigm to its maximum. This means that its object model is very powerful compared to that of other languages, but also that the behaviour
Ned Batchelder: Decorator shortcuts

Link: https://nedbatchelder.com/blog/202210/decorator_shortcuts.html

When using many decorators in code, there’s a shortcut you can use if you
find yourself repeating them. They can be assigned to a variable just like
any other Python expression.Don’t worry if you don
Matt Layman: Heroku Stack Upgrade - Building SaaS with Python and Django #147

Link: https://www.mattlayman.com/blog/2022/heroku-stack-upgrade-building-saas-with-python-and-django-147/

In this episode, I did some upgrades. We upgraded the app to the latest Heroku stack, upgraded htmx to the latest version, then worked on a small feature to add an empty state to a page when there is