What This Note Covers
This is a living summary of what I learned while starting Python. I’m focusing on fundamentals that actually change how I think: data, control flow, functions, and small habits that prevent bugs.
Key Concepts
- Variables and basic types (strings, integers, floats, booleans)
- Conditionals and loops as “structure for decisions”
- Functions for reuse and clarity
- Lists and dictionaries as everyday containers
- Reading error messages without panic
Small Examples
I prefer short examples that show structure. For instance, a guard clause before doing any work: if not items: return
# Example placeholder
def summarize(items):
if not items:
return {"count": 0, "message": "empty"}
return {"count": len(items), "message": "ok"}A tiny rule I’m keeping: “Make the structure obvious before optimizing anything.”
Next Steps
Next, I’ll write a second note focused on building small scripts and developing a repeatable debugging workflow.