My primary debugging tool is to add print statements to my programs</confession_time>. Print statements are very easy to use and they work well for any simple scripts. But that's the catch: if you're debugging an application and/or a test file, print statements won't be enough or will just not work (in the case if tests … Continue reading Debugging Python applications (plus free cheat sheet)
Command line shortcuts
I normally don't use many shortcuts because it's easier to just use my arrows and mouse to navigate than to memorize shortcuts but I am slowly realizing that the time spent on learning a new shortcut pays off. However, my memory is not that great and if I try to memorize multiple things at once, … Continue reading Command line shortcuts
Add a filename in the command line when running a Python script
OR: Run a Python script with arguments You can add arguments to the command line when running python scripts by importing the sys module from Python's standard library and using its argv function. Some examples: A simple script that displays the user name: def main(): name = 'Frodo' print(f'Hello, {name}') if __name__ == "__main__": main() … Continue reading Add a filename in the command line when running a Python script
Display nested dictionary content sorted by key in Python
Given a nested dictionary like this: dog_breeds = { 'Labrador Retriever': {'life_span': 14, 'male_weight': '36 Kg', 'female_weight': '32 Kg'}, 'Beagle': {'life_span': 15, 'male_weight': '11 Kg', 'female_weight': '10 Kg'}, 'German Shepherd': {'life_span': 13, 'male_weight': '40 Kg', 'female_weight': '32 Kg'}, 'Jack Russell Terrier': {'life_span': 16, 'male_weight': '8 Kg', 'female_weight': '8 Kg'}, 'Rottweiler': {'life_span': 10, 'male_weight': '60 Kg', … Continue reading Display nested dictionary content sorted by key in Python
Networking for Developers – part 3: Network and Physical layers
NOTE: Catch up with the previous posts in this post series:Part 1: OverviewPart 2: Application and Transport layers In the Internet, the network layer uses the Internet Protocol and it's responsible to analyse the destination address in the packets and direct them to where they should go. The job to actually move the packets around … Continue reading Networking for Developers – part 3: Network and Physical layers
Networking for Developers – part 2: application and transport layers
NOTE: Catch up with the previous posts in this post series:Part 1: Overview The Network Stack has four layers: Application, Transport, Network (or Internet) and Physical. This post will cover the top two layers: Application and Transport and together they help the destination computer identify what type of data it's receiving through the network. The … Continue reading Networking for Developers – part 2: application and transport layers
Networking for Developers – part 1: overview
For some reason grasping the concepts around computer networks has always been hard for me. Not surprisingly, I find that I'm not the only one: many software developers don't really understand how computers networks... work. All I know is that I send stuff via the internet and my stuff gets where I wanted it to … Continue reading Networking for Developers – part 1: overview
