Python Dunder Methods: What __init__ and __str__ Really Mean
“Dunder” is short for “Double Underscore.” Dunder methods are special “magic” methods that Python reserves for its own use. You don’t call them directly, but…
How to Fix: AttributeError: ‘dict’ object has no attribute ‘x’
This is a classic “dot vs. bracket” confusion. If you’ve ever encountered an AttributeError dict object message in your code, you’re not alone. You have…
Automating Google Sheets with Python (gspread)
We’ve automated Excel, but what about cloud data? If you’re looking to work efficiently with Google Sheets Python integration, gspread is a fantastic library for…
Parallel Python: multithreading vs. multiprocessing Explained
We learned in asyncio that we can wait for things concurrently. But what if we need to do heavy calculations at the same time? This…
How to Fix: TypeError: ‘NoneType’ object is not callable
The NoneType object is not callable error means you are trying to “call” a variable (by putting () after it) as if it were a…
Django in Production: Serving Static Files with Whitenoise
You deployed your Django app, but it looks terrible—all the CSS and images are missing! This is a common issue that can often be resolved…
Working with CSV Files in Python (The csv Module)
While Pandas is great for big data analysis, sometimes you just need to read a simple CSV file. For this, the Python csv module is…
How to Fix: TypeError: unsupported operand type(s) for +: ‘int’ and ‘str’
This error is the opposite of the common string concatenation error. It means you tried to do math (+), but one of your items was…
Unpacking with * and **: How to Call Functions with Lists and Dictionaries
You’ve learned how to define a function that accepts *args and **kwargs. Now, we’ll learn the opposite: how to call a function using * and…
Django CRUD: The ‘UpdateView’ and ‘DeleteView’
You can Create (Forms) and Read (List/Detail Views) data. Now let’s finish the set with Update and Delete, using Django UpdateView DeleteView for these operations….
