Thoughts on software and tech

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.

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', 'female_weight': '48 Kg'} } here’s a way to display its content sorted by key:

NOTE: Catch up with the previous posts in this post series: Part 1: Overview 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.

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 go. But how does that happen? Magic?