Blog
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Benchmarking old-style and new-style Python classes
It has been many years since Python developers were really supposed to worry about new-style vs. old-style classes. There is only one style (new) in Python 3.x, and even in
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= and = aren’t equal
When I teach a Ruby or Python class, I always begin by going through the various data types. My students are typically experienced programmers in Java, C++, or C#, and
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Last call for my online Python class
You can learn more about the class here. Or contact me as “reuvenlerner” on Skype, or via e-mail at reuven@lerner.co.il, to see if it’s right for you!
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Ruby and Python and Felix and Oscar
I have been consulting, developing, and offering training classes in both Ruby and Python for a number of years now — more than 15 years in Python, and more than
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Making Python’s __init__ method magical
In some programming languages, the idea of “reflection” is somewhat exotic, and takes a while to learn. In Python (and Ruby, for that matter), the language is both dynamic and
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Python scoping e-mail course
I had so much fun writing the previous blog post about Python scoping that I decided to expand it into a free e-mail course. Each day (for five days), you’ll
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Fun with Python scoping rules
Let’s say I want to try something on a list in Python. While I usually like to call my test list objects “mylist”, I sometimes forget, and create a variable
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Don’t use double quotes in PostgreSQL
I spend a large proportion of my time teaching classes in a variety of open-source technologies — specifically, Ruby, Python, PostgreSQL, and Git. One of the questions that invariably arises
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Convention over confusion
One of the most celebrated phrases that has emerged from Ruby on Rails is “convention over configuration.” The basic idea is that software can traditionally be used in many different
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Hello, world (again)
Hello out there! I’ve been privileged to work with many great people and companies since 1995, when I first started working as a consultant. I’ve helped companies to create Web