Bookmarks (433)

Create Your First App With Streamlit This tutorial shows you how to start building Streamlit data science apps with Python. Streamlit is an open-source Python library that makes it easy to create and share custom web apps for machine learning and data science. MARTIN FITZPATRICK

Refactoring Long Boolean Expressions This article shows you how you can improve the readability of long boolean expressions by splitting your code, naming sub-expressions, or rewriting your Boolean logic. TREY HUNNER

How to Build Hot Module Replacement in Python Django’s dev server, uvicorn, and others support hot-loading by restarting the service. For large programs this can be time consuming. This article shows you how to track just what needs to be reloaded and minimize the refresh to only those modules. GAUGE

Is Python Code Sensitive to CPU Caching? In lower level languages, being aware of what gets cached in the CPU can make large differences in performance. Python, being higher level, doesn’t give you that kind of control. But that doesn’t mean there aren’t things you can do. LUKAS ATKINSON

Learning Intermediate Python With a Deep Dive Course Do you want to learn deeper concepts in Python? Would the accountability of scheduled group classes help you get past the basics? This week, five Real Python Intermediate Deep Dive workshop members discuss their experiences. REAL PYTHON podcast

Checking for Membership Using in and not in In this video course, you’ll learn how to check if a given value is present or absent in a collection of values using Python’s in and not in operators, respectively. This type of check is known as membership test in Python. REAL PYTHON course

How to Strip Characters From a Python String Use Python’s .strip() method to remove unwanted whitespace or specific characters. Learn about common pitfalls, real-world use cases, and compare .strip() with similar methods like .lstrip() and .removesuffix(). REAL PYTHON

Django: What’s New in 5.2 Django 5.2 was recently released and this post talks about the new features. They include: automatic model imports in the shell, composite primary keys, form customization, the simple block tag, and more. ADAM JOHNSON

The Best Programmers I Know In this opinion piece, Matthias writes about the traits he thinks make a good developer. They include things like reading the docs, knowing your tools, continuous learning, helping others, and more. MATTHIAS ENDLER

BeeWare and the State of Python on Mobile Talk Python interviews Russell Keith-Magee and they talk about Beeware, a project working towards true native apps built on Python, especially for iOS and Android. TALK PYTHON

Using Python’s .__dict__ to Work With Attributes In this tutorial, you’ll dive deeper into the .__dict__ attribute in Python objects. This attribute is a dictionary-like object that holds writable class or instance attributes. It allows you to manage attributes at a low level, making your classes flexible and efficient. REAL PYTHON

10 Insane Underground Python Scripts Imagine if your Python script could cover its tracks after execution or silently capture the screen. This post has 10 short scripts that do tricky things. DEV.TONAPPY TUTS

A Dev’s Guide to Surviving Python’s Error zoo 🐍 Exceptions happen—but they don’t have to wreck your app (or your day). This Sentry guide breaks down common Python errors, how to handle them cleanly, and how to monitor your app in production—without digging through logs or duct-taping try/excepts everywhere → SENTRY sponsor

Talks I Want to See at DjangoCon US 2025 Looking for a talk idea for DjangoCon US? Tim’s post discusses things he’d like to see at the conference. TIM SCHILLING

REST in Peace? Django’s Framework Problem The Django Rest Framework (DRF) has recently locked down access to its issues and discussion boards due to being overwhelmed. What does this mean for larger open source projects that become the victims of their own success? The article’s good points notwithstanding, the DRF is still doing releases. DANLAMANNA.COM

Developing and Testing Python Packages With uv Structuring Python projects can be confusing. Where do tests go? Should you use a src folder? How do you import and test your code cleanly? In this post, Michael shares how he typically structures Python packages using uv, clarifying common setup and import pitfalls. PYBITES • Shared by Bob Belderbos

Algorithms for High Performance Terminal Apps This post by one of the creators of Textual talks about how to write high performing terminal applications. You may also be interested in the Talk Python interview on the same topic. WILL MCGUGAN

Migrate Django ID Field From int to big int If you’re responsible for a project based on an older version of Django, you may be using int based primary keys. This post talks about how to transition to a 4-byte integer, used in more recent versions of Django, with minimal down time. CHARLES OLIVEIRA

Shadowing in Python Gave an UnboundLocalError Reusing a variable name to shadow earlier definitions normally isn’t a problem, but due to how Python scopes, it occasionally gives you an exception. This post shows you just such a case and why it happened. NICOLE TIETZ-SOKOLSKAYA

Terrible Horrible No Good Very Bad Python This quick post shows some questionable code and asks you to predict what it does. Don’t forget to click the paragraphs at the bottom if you want to see the answers. JYNN NELSON

How to Report a Security Issue in an Open Source Project So you’ve found a security issue in an open source project – or maybe just a weird problem that you think might be a security problem. What should you do next? JACOB KAPLAN-MOSS

Python’s Bytearray: A Mutable Sequence of Bytes In this tutorial, you’ll learn about Python’s bytearray, a mutable sequence of bytes for efficient binary data manipulation. You’ll explore how it differs from bytes, how to create and modify bytearray objects, and when to use them in tasks like processing binary files and network protocols. REAL PYTHON