Python Programming#
Collections Module - defaultdict#
collections.defaultdict takes a type not a value- It will initialize based on the default value for that type
- Common mistake: passing a value instead of a callable type
- Example:
defaultdict(list) not defaultdict([])
- Cleaner than manually checking if keys exist before accessing
Version Control#
Git Commands and Tricks#
git log --format="%H" -n 1 | cat outputs the last commit ID- Useful for scripting and automation
- The
cat ensures the output is properly formatted
%H format specifier gives the full commit hash-n 1 limits to the most recent commit
Cloud Infrastructure and DevOps#
AWS EC2 Free Tier#
- EC2 has a Free tier! I can request a bunch of machines here
- Great for learning and experimenting with cloud infrastructure
- Limited resources but sufficient for development and testing
- Good entry point for understanding cloud computing concepts
Juju - Multi-Cloud Orchestration#
- Juju is a tool that helps manage server providers, whether they are GCP, AWS, your own servers or Azure, among others
- Gives you one way to start, setup and run your servers across different cloud providers
- Abstracts away cloud provider differences
- Enables consistent deployment across hybrid and multi-cloud environments
Juju Configuration System#
- Juju’s configurations are called charms
- These are written in Python
- Charms define how services should be deployed and configured
- Reusable deployment patterns for common software stacks
- Community-maintained charm store with pre-built configurations