Master Polars: A Guide to groupby and Aggregations
The most common data analysis task is “Split-Apply-Combine.” When using Polars, the groupby operation is essential for this task. In Polars, this is done with…
AI Project: Build an Image Classifier with Hugging Face (Vision)
We’ve used Hugging Face to understand text and generate text. Now, let’s use it to understand images with Hugging Face Image Classification. Image Classification is…
How to Fix: TypeError: ‘int’ object is not callable
This error is very similar to 'str' object is not callable. One common error in Python is the TypeError int not callable, which means: “You…
Automation Project: Extract Table Data from Images to Excel (OCR)
This project is a perfect example of “Automating the Boring Stuff.” In this tutorial, we’ll walk through using Python OCR to Excel as we combine…
Joining DataFrames in Polars: The Blazing Fast join() Method
In Pandas, you use pd.merge() to combine datasets. In Polars, you use the join() method, which is one of the fastest in any library. If…
How to Fix: TypeError: ‘NoneType’ object is not iterable
This error is simple: you tried to use a for loop on a variable, but that variable was None. In Python, this will raise a…
AI Project: Text Classification with Hugging Face (The Manual Way)
The Hugging Face pipeline is great for simple tasks, and it’s particularly well-known for Hugging Face Text Classification. But what if you need the raw…
PyScript and APIs: How to fetch Data from the Web
A PyScript app is great, but it’s isolated. To build a real dashboard (like a weather app or a crypto tracker), you need to get…
How to Fix: TabError: inconsistent use of tabs and spaces in indentation
This is not the same as IndentationError (which means your indentation is simply wrong). This TabError means your indentation is mixed. If you’re wondering what…
Packaging Your Python Project: An Intro to pyproject.toml
You’ve built dozens of projects. To publish your package and make it easy for others to install, you’ll need to understand how to use Python…
