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datetime.now() is how Python hands you the current date and time, in a single object: For the date on its own, date.today() is shorter. To control how it looks, pass a pattern to strftime(). One thing has changed recently and is worth knowing: datetime.utcnow() is deprecated. The replacement is covered below, along with formatting, timezones … 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 >>
If you’ve ever tried to pass a NumPy array into a function that only accepts a tuple, you already know the frustration. The fix is simple, but picking the right method depends on what you’re working with. In this tutorial, I’ll walk you through 5 practical ways to convert an array to a tuple in Python, including … Read more >>
Tuples are everywhere in Python: database query results, function return values, coordinate pairs, and configuration settings. And knowing the right way to loop through them can make your code cleaner, faster, and more Pythonic. To iterate through a tuple in Python, you can use a for loop, a while loop, enumerate(), zip(), list comprehension, or itertools.chain(), each suited for a different scenario. … Read more >>
Every Python developer hits this wall at some point. You have a tuple, you need to add an element to it, and Python throws back a cold AttributeError: ‘tuple’ object has no attribute ‘append’. Frustrating? Absolutely. But it’s fixable, and once you understand why tuples work the way they do, the solution makes complete sense. In this guide, … Read more >>
If you’ve ever returned structured data from a function or tried to group related values cleanly, you’ve probably run into both namedtuple and dataclass. They look similar on the surface; both let you create objects with named fields, but they’re built for different jobs. I get this question a lot in Python training sessions: “When do I use one … Read more >>
If you’ve been writing Python for a while, you’ve probably seen a function return two or three values at once and wondered, “wait, is that a tuple?” Yes, it is. And learning how to return a tuple from a function is one of those small things that make your Python code a lot cleaner. In … Read more >>
I have spent over a decade building data-driven applications in Python. During that time, I’ve found that the loc property is the most versatile tool in the Pandas library. It is the primary way to access, filter, and even update your data using labels. If you are still struggling with data selection, this guide will … Read more >>
If you’ve ever run into a NameError, got confused about why a variable changed unexpectedly inside a function, or wondered why your variable “disappeared” the moment your code exited a loop, this guide is for you. Python variables are deceptively simple on the surface. You can learn the basic syntax in five minutes. But the real … Read more >>
Let me be upfront with you: this isn’t a “both are great, it depends!” article. You’ve probably read a dozen of those already. I’m going to tell you what the data actually says, what the job market looks like right now, and then give you a clear recommendation based on where you’re headed. The short … Read more >>