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Python, argparse, and command line arguments

Today we are going to discuss a fundamental developer, engineer, and computer scientist skill — command line arguments. Specifically, we’ll be discussing: What are command line arguments Why we use command line arguments How to parse command line arguments with Python Command line arguments are an elementary skill that you must learn how to use, especially […]

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OpenCV: Resolving NoneType errors

Each week I receive and respond to at least 2-3 emails and 3-4 blog post comments regarding NoneType  errors in OpenCV and Python. For beginners, these errors can be hard to diagnose — by definition they aren’t very informative. Since this question is getting asked so often I decided to dedicate an entire blog post […]

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