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Calculating the sum of digits is a task I often encounter when cleaning data or preparing features for machine learning models. In my ten years of Python development, I have found that this simple arithmetic operation pops up in the most unexpected places. Whether I am verifying credit card checksums or analyzing US Census Bureau … Read more >>
The shortest Fibonacci series program in Python is three lines, and it works because Python evaluates the whole right-hand side before assigning: That single swap line replaces the temporary variable other languages need. Everything else on this page is a variation on it. All the timings below are real runs on Python 3.12.5. What is … Read more >>
Working as a Python developer for over a decade, I have encountered countless scenarios where I needed to calculate growth, interest, or scaling. In my early days, I often fumbled with complex mathematical syntax, but Python makes exponentiation incredibly intuitive and powerful. Whether you are calculating compound interest for a savings account in New York … Read more >>
The shortest happy birthday code in Python is a single print() call with an f-string. Below you will find nine complete programs, from that one-liner to an ASCII-art banner, a text cake, a coloured and an animated terminal message, a Turtle drawing of a cake and a clickable Tkinter birthday card. Every program includes its … Read more >>
I have noticed that the smallest details often cause the most confusion for beginners. One of those details is how the Python print() function handles the end of a line. By default, every time you call the print function in Python, it moves to a new line. This happens because of the end parameter, which … Read more >>
I have spent over a decade writing Python scripts to automate data workflows. One task that pops up constantly is grabbing compressed data from the web. Whether I am pulling census records or financial reports, knowing how to handle ZIP files efficiently saves me hours of manual clicking. In this tutorial, I will show you … Read more >>
Mastering Tkinter can open doors to creating practical and interactive desktop applications in Python. Many employers value this skill because it shows strong problem-solving and GUI development abilities. This article covers 51 Tkinter interview questions and answers designed to strengthen understanding and build confidence before stepping into a technical interview. It provides a clear guide … Read more >>
Have you ever looked at a massive 2D NumPy array full of numbers and felt like you were staring into the Matrix? I’ve been there many times during my ten years as a Python developer. Data is often messy, especially when you are dealing with large grids of information like regional temperatures or population densities. … Read more >>
I have found that polar plots are often the most misunderstood chart type. While most Python developers stick to standard XY Cartesian coordinates, polar plots are essential when you are dealing with cyclical data like wind directions or seasonal sales cycles across the USA. The most common hurdle I see beginners face is controlling the … Read more >>
If you have spent any time building data visualizations in Python, you know that the “default” look isn’t always what you want for a high-end report. One small detail that often catches my eye—and bugs me—is the direction of the axis ticks. By default, Matplotlib usually points them outward, away from the plot area. In … Read more >>
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