Inheritance in Python: How to Re-use Code in Classes
In our Guide to OOP, we created a Dog class. But what if we also need a Cat class? They both have names and ages….
How to Fix: UnboundLocalError: local variable referenced before assignment
This is one of Python’s trickiest errors, known as UnboundLocalError. It happens because of how Python handles Variable Scope (where variables can be seen). ⚡…
Merging DataFrames in Pandas: A Guide to merge() and concat()
Real-world data is rarely in one single file. You might have sales data in one CSV and customer info in another. You need to combine…
Web Scraping 101: Intro to BeautifulSoup and Python Requests
Sometimes the data you need isn’t in a nice CSV file; it’s stuck on a website. Web Scraping is the process of using code to…
Python Generators vs. Lists: How to Save Memory
Imagine you need to process 1 billion numbers. If you create a List of 1 billion numbers, Python has to create all of them at…
Django Models: Introduction to Databases and ORM
When working with databases today, Django Models can simplify the process. A real website needs to save data: users, blog posts, comments, products. In the…
Beginner Project: Build a Weather App with Python (Using APIs)
Real-world applications don’t just use data you type in; they fetch data from the internet. A Python Weather App, for instance, would do this using…
How to Fix: TypeError: list indices must be integers or slices, not str
If you’ve ever encountered “TypeError: list indices”, this error almost always means one thing: You think you have a Dictionary, but you actually have a…
Python List Comprehensions: Writing Cleaner Code
If you have been writing Python for more than a few days, you have likely written this exact sequence of boilerplate code: While this works…
Data Visualization in Python: Seaborn for Beautiful Charts
While Matplotlib is powerful, its default charts can look a bit… basic. For those new to data visualization, a Seaborn Beginner Guide can be very…
