Tag Archives: programming

Command Line Arguments in Python

When I need a new tool, I often code it in Python.  Often, command line options are useful. Sometimes it is possible to have a fixed set of parameters, but this is not very flexible. Fortunately, Python has standard libraries to handle parsing command lines.  There are three libraries providing varying capabilities.  Some of the systems I run on have older versions like Jython 2.1 or Python 2.6.  This limits which libraries I can use without backporting libraries

This document provides examples for four command line processing options.  The examples are for a program that processes files and has an optional argument to report the execution time. Continue reading

Code Optimization Rules

It is common for developers to worry about optimization while doing initial programming. Some write extremely complex code in the belief that it is optimized. Unfortunately, this code is often slower than it might otherwise be. Additionally, the compiler may be unable to optimize the code. I find optimization is rarely necessary and effective optimizations are difficult to predict.

This post present the my optimization rules. Future posts will present the techniques I use to avoid optimization, and perform optimization when needed. Continue reading