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As a developer, I was cleaning up a dataset in Python where I had a list of customer names collected from an online survey. The issue? Some entries were completely blank. These empty strings were messing up my analysis, and I needed a quick way to remove them. If you’ve ever worked with real-world data … Read more >>
I was working on a project where I needed to stop executing code inside an if statement once a certain condition was met. At first, I thought Python might have a direct “exit if” keyword, but it doesn’t. Instead, Python gives us multiple ways to exit an if block depending on whether we’re inside a … Read more >>
When I first started working with the Python pickle module in Python 3, I ran into a frustrating error: This error often happens when we try to use pickle in text mode instead of binary mode. It confused me at first, but after a few trials, I figured out the exact cause and how to … Read more >>
Recently, I was working on a payroll automation project where I needed to calculate the last day of each month. The challenge was that months don’t all have the same number of days, and leap years add another layer of complexity. Since I’ve been coding in Python for more than a decade, I’ve run into … Read more >>
While I started teaching Python, one of the most common beginner questions I got was about Armstrong numbers. It’s a simple concept, but it’s also a great way to practice loops, conditionals, and functions in Python. In this tutorial, I’ll show you three different methods to check N-digit Armstrong numbers in Python. I’ll also provide … Read more >>
As a developer, I was working on a large data processing project for a client in California. I faced a situation where I needed to declare variables first and only assign values later in the program. If you have been coding in Python for a while, you know that, unlike some other programming languages (like … Read more >>
Python’s print() ends every call with a new line, so printing a new line in Python usually means doing nothing extra. Call print() on its own for a blank line, or put \n inside the text: The details trip people up, though, starting with print("\n") giving two line breaks. Every output here is a real … Read more >>
I was working on a project where I needed to quickly check the first letter of customer IDs stored in a database. At first, I thought there might be only one way to do this. But after experimenting, I realized Python offers several simple methods to extract the first character of a string. In this … Read more >>
Recently, while working on a data-cleaning project, I ran into a problem where my dataset had unnecessary square brackets around values. For example, instead of “New York”, the data looked like “[New York]”. If you’ve ever imported lists or JSON data into Python, you’ve probably seen this happen too. At first glance, it looks small, … Read more >>
While I was working on a project, I had to clean up messy text data coming from survey forms. Many responses had extra characters at the beginning and end, like brackets, quotes, or even unwanted symbols. At first, I thought Python would have a direct function for this. But just like in Excel, where you … Read more >>
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