One of the notable things about MIT’s computer science curriculum, at least back when I was studying there, was that you didn’t learn any “practical” programming languages.  Our work was all done in either Scheme (a dialect of Lisp) or in CLU (an early object-oriented language).  I can’t say that ...

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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 Python 2.x, old-style classes have not been recommended for many years.  Nevertheless, I mention old-style classes in my Python courses, ...

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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 so it no longer surprises me when I begin to describe numbers, and someone asks, “How many bits is an ...

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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 7 years in Ruby. Inevitably, when someone from one of my courses hears that I use more than one language, ...

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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 open, allowing you to poke around in the internals of just about any object you might like.  Reflection is a ...

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