Data with Charles

Back to Basics - SQL 01 - SQL Intro

Charles De Barros, Jul 21, 2025, Back to basics Sql

Mastering the Basics of SQL: A Beginner’s Guide to Structured Query Language In today’s data-driven world, understanding how to manage and retrieve data effectively is a highly valuable skill. Whether...

Airbnb - London

Charles De Barros, Jun 15, 2024, Projects Portfolio

Note: All the project’s Jupyter Notebook files, including images and my notes, can be seen here. Sources InsideAirBnb London data About the source Inside Airbnb is an independent, non-commercial set...

Back to Basics - Python 03

Charles De Barros, Apr 23, 2024, Back to basics Python

Better than sliced bread String slicing allows us to extract specific portions of a string by specifying a start and an end indices. We can even skip characters! How about...

Back to Basics - Pandas 02

Charles De Barros, Apr 16, 2024, Back to basics Pandas

One of the most common tasks we perform with Pandas is data indexing and selection. We do that pretty much daily. Let’s delve into the world of Pandas and explore...

Back to Basics - Python 02

Charles De Barros, Apr 10, 2024, Back to basics Python

The Numeric data type There are eight major data types in Python: Description Type Text str Numeric int, float, complex Sequence list, tuple, range Mapping dict Set set, frozenset Boolean...

Back to Basics - Pandas 01

Charles De Barros, Apr 09, 2024, Back to basics Pandas

Introduction to Pandas Pandas Official Documentation. What is Pandas? As per the Pandas Official Documentation website: Pandas is an open source, BSD-licensed library providing high-performance, easy-to-use data structures and data...

Hi, I'm Charles. I am a Data Analyst interested in the Environment, Hospitality, Tech, Education, and Science. I enjoying working with Python, Excel, Power BI and and SQL. I bake in my spare time.

Back to Basics - SQL 01 - SQL Intro

Airbnb - London

Back to Basics - Python 03

Back to Basics - Pandas 02

Back to Basics - Python 02

Back to Basics - Pandas 01

Hi, I'm Charles.

I am a Data Analyst interested in the Environment, Hospitality, Tech, Education, and Science.

I enjoying working with Python, Excel, Power BI and and SQL.

I bake in my spare time.