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When your Python list grows from 10 items to 10 million, the search algorithm you choose starts to matter a lot. In this tutorial, you’ll learn the difference between linear search and binary search in Python, see how each works step by step, and measure how fast they are on real examples. By the end, … Read more >>
When you’re writing Python code, it’s easy to reach for a list by default. But sometimes a tuple or a set is a much better fit, and choosing the right one can make your code cleaner, safer, and faster. In this tutorial, I’ll walk through the real differences between sets and tuples, show you where … Read more >>
If I work with dates and times in Python, one of the first things I need to understand is the difference between naive and aware datetime objects. This is a small concept, but it prevents a lot of timezone bugs later. What is a naive datetime? A naive datetime is a datetime object that does not know which timezone … Read more >>
If I have a local time in Python and need the same moment in UTC, I convert it with astimezone(timezone.utc). In this tutorial, I’ll walk through the safest way to do it, why timezone-aware datetimes matter, and how I use this in real code. Why this matters I use UTC whenever I need a time value … Read more >>
If I need a Python script to run something at a specific time, I usually start with the current time, compare it with a target time, and then trigger the task when it matches. In this tutorial, I’ll show you how to do that with plain Python first, then with the schedule library for cleaner recurring jobs. … Read more >>
If you’ve ever typed import tensorflow as tf inside a Jupyter Notebook and got hit with a ModuleNotFoundError, you’re not alone. This is one of the most common frustrations for beginners getting into machine learning, and it almost always comes down to one thing: TensorFlow was installed in a different environment than the one Jupyter is using. In this … Read more >>
If I need the current UTC in Python, I use datetime.now(timezone.utc) first. It gives me a timezone-aware datetime, which is the safest choice for logs, APIs, databases, and scheduled jobs. What UTC means UTC stands for Coordinated Universal Time. It is the standard time reference I use when I want one consistent clock across servers, apps, and … Read more >>
If you’ve been hearing about Django and want to start building web apps with Python, you’re in the right place. In this guide, I’ll walk you through how to install Django step-by-step — on Windows, Mac, or Linux — from scratch. I’ll also show you how to run your first Django project, install a specific … Read more >>
If you want the current date and time in Python, the simplest answer is datetime.now(). In this tutorial, I’ll show you the right way to get local time, UTC, and timezone-aware timestamps, along with the formatting and pitfalls you should know. Python datetime module Python gives you the datetime module in the standard library, so you do not … Read more >>
If you’ve ever run a Python script and hit this error: NameError: name ‘raw_input’ is not defined — You’re in the right place. That error means you’re using Python 3, and raw_input was removed in Python 3. Don’t worry, though. The fix is simple, and I’ll walk you through everything you need to know in this guide. … Read more >>
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