Django Forms: The Easy Way to Handle User Input
HTML forms are painful. You have to write the <input> tags, handle the POST request, validate that the user didn’t leave fields blank, and show…
Your First Machine Learning Model: Linear Regression with Scikit-Learn
Machine Learning (ML) often sounds like magic, but at its core, it is just math. It is about finding patterns in data and using them…
How to Fix: ImportError: cannot import name ‘X’ from ‘Y’
This error means Python found the file you wanted to import from, but it couldn’t find the specific function or class you asked for. This…
Automate Your Inbox: How to Send Emails with Python
Imagine your Web Scraper finds a great deal. Wouldn’t it be nice if it emailed you immediately? With the right know-how, you can send emails…
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). The…
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…
