🐍 Travel To Python — My Learning Portfolio

Hi! I'm Dan 👋. This repo is my Python learning log: I started from zero and I'm documenting every project, exercise, and new thing I learn along the way. It keeps growing little by little, so if you come back later there's probably something new.

🚀 Key Features

• 4 projects, organized in a modular way, from the most basic to the most advanced
• Nested interactive menu system to navigate the exercises
• Clear progression: fundamentals → practical exercises → integrative project → API with a database
• Latest project: Trackit, a CRUD built with FastAPI + SQLAlchemy
• Code commented in Spanish, explaining the "why" and not just the "what"

📂 Project Structure

Folder	Description	Main files
📁 Introduccion/	🐣 Python fundamentals	AprendiendoPython.py, EjerciciosBasicos.py, EjerciciosCondicionales.py
📁 PrimerProyecto/	🔧 Practical exercises / validators	ValidarContrasena.py, ClasificarEdad.py, VerificadorVotacion.py, numeros.py
📁 SegundoProyecto/	🧁 Integrative project: Kokomi Bakery	DataBase.py, Pedidos.py
📁 CRUD-python/	🗃️ Trackit: CRUD with FastAPI + SQLAlchemy	main.py, trackit.db
📄 main.py	Repo's main menu	—

📝 Project descriptions

Introduccion/

Basic Python concepts: variables, data types, operators, conditionals, and loops.

PrimerProyecto/

Practical exercises focused on validation: passwords, age classification, voting eligibility checks, and number handling.

SegundoProyecto/ — Kokomi Bakery 🧁

My first integrative project: an order system for a bakery, using dictionaries as the data structure for products, stock validation, and price calculation.

CRUD-python/ — Trackit 🗃️

The most recent project and the biggest step up so far: an API built with FastAPI to keep track of where you left your belongings. It uses SQLAlchemy with Object-Oriented Programming to define the data model and persist it in an SQLite database (trackit.db). It implements all 4 CRUD operations:

• POST /item/ — create an item
• GET /items/ — list all items
• GET /item/{item_id} — get an item by ID
• PUT /item/{item_id} — update an item
• DELETE /item/{item_id} — delete an item

🛠️ Skills demonstrated

Python fundamentals

• Basic syntax: variables, data types, operators
• Basic I/O: input(), print(), f-strings
• Type conversion: int(), float(), str()
• Arithmetic, compound, and comparison operators

Control flow

• Conditionals: if, elif, else
• Loops: while, control with boolean flags
• Boolean logic: and, or, compound conditions

Structure and organization

• Functions: definition, parameters, return values
• Modules: importing and organizing by folder
• Interactive menus: nested navigation systems

Kokomi Bakery

• Dictionaries as the data structure for products
• Stock and product-existence validation
• Price and available-quantity calculations
• Basic in-memory persistence

Trackit (CRUD API)

• FastAPI for exposing REST endpoints
• SQLAlchemy (ORM) + Object-Oriented Programming to model data
• Real persistence in an SQLite database
• Session handling and error handling with HTTPException
• Full CRUD: create, read, update, and delete

▶️ How to run

Main menu (Intro, First and Second Project)

python main.py

Requires Python 3.8+.

Trackit (CRUD with FastAPI)

cd CRUD-python
pip install fastapi sqlalchemy uvicorn
uvicorn main:app --reload

Then open http://127.0.0.1:8000/docs to test the endpoints from FastAPI's interactive documentation.

📌 Notes

I keep updating this repo as I learn new things, with the goal of building something bigger and more solid over time.

🔜 Upcoming updates

1. Using try/except exceptions
2. Object-Oriented Programming (OOP)
3. Pandas and NumPy
4. Larger, nested dictionaries
5. Codeforces problems solved with explanations in comments
6. More modular, scalable projects

---

Maybe it's not much, but it's humble hehe xddd

— Dan :D