The Real Python Podcast

How maintainable is your Python code? Is it possible to hold the code for your functions in your head? When is it appropriate to use measurements in a code review? This week on the show, Reka Horvath and Ben Martineau from Sourcery are here to discuss their recent PyCon talk, “Actionable insights vs ranking: How to use and how NOT to use code quality metrics.” Reka and Ben share their thoughts on how metrics can provide insights into your Python code. We discuss four measurements of code complexity and what factors into each. We also talk about deciding whether to refactor or rewrite code. Ben and Reka share their experience in code review situations and the importance of shifting the conversation from subjective opinions toward objective measurements. Course Spotlight: Writing Idiomatic Python What are the programming idioms unique to Python? This course is a short overview for people coming from other languages and an introduction for beginners to the idiomatic practices within Python. You’ll cover truth values, looping, DRY principles, and the Zen of Python. Topics: 00:00:00 – Introduction 00:01:54 – Reka’s tutorials on Real Python 00:02:45 – PyCon US 2022 Talk 00:06:01 – Code reviews and metrics 00:09:42 – Trying to make things more objective 00:13:24 – Sponsor: CData Software 00:14:07 – Measuring WTFs/min and magical code 00:16:39 – Pythonic, idiomatic, and clean code 00:21:17 – Sourcery.ai and refactoring 00:24:04 – Four metrics to measure 00:24:56 – Function length 00:30:05 – Cyclomatic complexity 00:36:49 – Video Course Spotlight 00:38:21 – Cognitive complexity 00:44:38 – Working memory 00:51:49 – Suggestions on how to use the metrics 00:58:34 – Generating measurements 01:01:36 – What are you excited about in the world of Python? 01:03:30 – What do you want to learn next? 01:05:31 – Thanks and goodbye Show Links: Sourcery | Automatically Improve Python Code Quality Can you fit all of this code in your head? Talk - Reka/Ben: Actionable insights vs ranking How to use and how NOT to use code quality metrics - YouTube Using Pandas and Python to Explore Your Dataset – Real Python Refactoring - Martin Fowler WTFs/m – OSnews Who’s Your Coding Buddy? Principle of least astonishment - Wikipedia Anthony Shaw - Wily Python: Writing simpler and more maintainable Python - PyCon 2019 - YouTube Refactoring Python Applications for Simplicity – Real Python Cyclomatic complexity - Wikipedia Cognitive Complexity: A new way of measuring understandability - SonarSource The Magical Number Seven, Plus or Minus Two - Wikipedia wily · PyPI sourcery-analytics: A command line tool and library for statically analyzing Python code quality. Clean Code: A Handbook of Agile Software Craftsmanship - Robert C. Martin Errors and Exceptions — Python 3.10.5 documentation Rust Programming Language Ben Martineau – Medium Sourcery | Blog The Prodigy - ‘Breathe’ - YouTube Level up your Python skills with our expert-led courses: Python vs JavaScript for Python Developers Testing Your Code With pytest Writing Idiomatic Python Support the podcast & join our community of Pythonistas

Would you like to explore the functional programming side of Python? What are the advantages of this approach, and what tools are built into the language? This week on the show, author Bruce Eckel talks about functional programming in Python. Bruce is the author of several programming books, including Thinking in Java, Thinking in C++, Thinking in Python, Atomic Scala, and most recently, Atomic Kotlin. He’s been an explorer of programming languages over his career. Functional programming—with its lack of side effects, its transparency, and its potential for parallelization—has recently caught Bruce’s attention. Bruce’s talk “Making Data Classes Work for You” at PyCon US 2022 explored the idea of the invariance of objects. We also discuss his next book project, the Python community, and his affection for “un-conferences”. Bruce is hosting the upcoming Summer Tech Forum in Crested Butte, Colorado, this August. Course Spotlight: Using Data Classes in Python Data classes were introduced in Python 3.7. When using data classes, you don’t have to write boilerplate code to get proper initialization, representation, and comparisons for your objects. Topics: 00:00:00 – Introduction 00:02:15 – Musicians as programmers 00:03:40 – Happy Path Programming Podcast 00:04:19 – The essence of functional programming 00:10:55 – Making Data Classes Work for You - PyCon US 2022 talk 00:15:14 – What are things that have drawn you to Python? 00:17:39 – More than just a scripting language 00:21:35 – Consulting with companies 00:23:40 – Video Course Spotlight 00:25:04 – The frozen flag in a data class and __post_init__ 00:29:02 – Invariance and functional programming 00:31:02 – How do you see it changing your programming? 00:34:49 – Not forcing an “approach” to Python 00:38:46 – Writing style in programming and books 00:42:31 – Who has been the intended audience for your books? 00:45:26 – Educational debt 00:46:50 – Python’s community 00:51:03 – New book about concurrency 01:00:51 – Winter and Summer Tech Forums 01:07:23 – Conference precautions and safety 01:08:51 – What are you excited about in the world of Python? 01:11:40 – What do you want to learn next? 01:12:23 – How can people follow the things you do? 01:13:13 – Thanks and goodbye Show Links: Computing Thoughts - Bruce Eckel’s Programming Blog MindView Exceptional Learning Experiences Happy Path Programming • A podcast on Anchor Bruce Eckel: Making Data Classes Work for You - PyCon US 2022 - YouTube Data Classes in Python 3.7+ (Guide) – Real Python Functional Programming in Python: When and How to Use It – Real Python Function composition (computer science) - Wikipedia Monad (functional programming) - Wikipedia Smalltalk - Wikipedia C++ - Wikipedia Java (programming language) - Wikipedia Object-oriented programming - Wikipedia Learning Resources for the Kotlin Programming Language Episode #88: Discussing Type Hints, Protocols, and Ducks in Python – The Real Python Podcast Fluent Python, 2nd Edition Summer Tech Forum Unconference: Self-Organizing Open Spaces in Crested Butte, Colorado August 15-19, 2022 Bruce Eckel (@BruceEckel) / Twitter Level up your Python skills with our expert-led courses: Python Decorators 101 Using Data Classes in Python Using Python Lambda Functions Support the podcast & join our community of Pythonistas

Have you heard about PyScript? The brand-new framework has the community excited about building interactive Python applications that run entirely within the user’s browser. Would you like to dig into the details beyond the “Hello World” examples? This week on the show, Christopher Trudeau is here, bringing another batch of PyCoder’s Weekly articles and projects. We talk about a Real Python tutorial from Bartosz Zaczyński about PyScript. The article provides an initial look at the framework and then takes you deep into the intricacies. We also share additional resources to help familiarize you with the project. Christopher talks about another Real Python article, this one on how to approach managing errors in Python. The tutorial “LBYL vs EAFP: Preventing or Handling Errors in Python” is from frequent contributor Leodanis Pozo Ramos. We cover several other articles and projects from the Python community, including discussing the PSF’s Python Developers Survey 2021 Results, Django static files and templates, how to profile Python code, a launcher for penetration testing, and a project for confirming Python versions through syntax errors. Course Spotlight: Building a Django User Management System In this video course, you’ll learn how to extend your Django application with a user management system, complete with email sending and third-party authentication. Topics: 00:00:00 – Introduction 00:02:32 – LBYL vs EAFP: Preventing or Handling Errors in Python 00:08:38 – How To Profile Python Code 00:18:52 – Sponsor: CData Software 00:19:35 – Django Static Files and Templates 00:26:35 – A First Look at PyScript: Python in the Web Browser 00:38:20 – Video Course Spotlight 00:39:39 – Python Developers Survey 2021 Results 00:48:19 – python-syntax-errors: Version-Specific No-Ops 00:50:03 – arsenal: Inventory Launcher for Penetration Testing 00:55:03 – Thanks and goodbye Topics Links: LBYL vs EAFP: Preventing or Handling Errors in Python – In this tutorial, you’ll learn about two popular coding styles in Python: look before you leap (LBYL) and easier to ask forgiveness than permission (EAFP). You can use these styles to deal with errors and exceptional situations in your code. You’ll dive into the LBYL vs EAFP discussion in Python. How To Profile Python Code – No matter how good you are, sometimes your code just runs slowly. Learning how to properly profile your software to identify and fix bottlenecks is a useful skill. This article talks about what you need to know to measure your code’s performance and how to use the cProfile, profile, and timeit libraries, along with others. Django Static Files and Templates – “Static files like CSS, JavaScript, and fonts are a core piece of any modern web application. They are also typically confusing for Django newcomers since Django provides tremendous flexibility around how these files are used. This tutorial will demonstrate current best practices for configuring static files in both local development and production.” A First Look at PyScript: Python in the Web Browser – In this tutorial, you’ll learn about PyScript, a new framework that allows for running Python in the web browser with few or no code modifications and excellent performance. You’ll leverage browser APIs and JavaScript libraries to build rich, highly interactive web applications with Python. Discussion: Python Developers Survey 2021 Results | PSF Python Developers Survey 2021 Results | JetBrains Raw Data SurveyExport.csv | Google Drive Projects: python-syntax-errors: Version-Specific No-Ops arsenal: Inventory Launcher for Penetration Testing navi: An interactive cheatsheet tool for the command-line eg: Useful examples at the command line. Additional Links: “Zero cost” exception handling · Issue #84403 Python 3.11 Preview: Task and Exception Groups | Real Python PyCon US 2022 Keynote - Peter Wang - PyScript | YouTube PyScript | Run Python in your HTML pyscript: Getting started pyscript: Pyscript examples Python Timer Functions: Three Ways to Monitor Your Code | Real Python Amdahl’s law | Wikipedia Django Books | William Vincent Django Chat Episode #114: Getting Started in Python Cybersecurity and Forensics | The Real Python Podcast Level up your Python skills with our expert-led courses: Building a Django User Management System How to Set Up a Django Project Raising and Handling Python Exceptions Support the podcast & join our community of Pythonistas

Are you interested in a career in security using Python? Would you like to stay ahead of potential vulnerabilities in your Python applications? This week on the show, James Pleger talks about Python information security, incident response, and forensics. James has been doing information security for over fifteen years, working at some of the biggest companies, government agencies, and startups. He shares numerous Python resources to dive into detecting threats and improving your projects. We discuss how to learn about security topics and get involved in the community. Make sure you check out the massive collection of links in the show notes this week. Course Spotlight: Exploring HTTPS and Cryptography in Python In this course, you’ll gain a working knowledge of the various factors that combine to keep communications over the Internet safe. You’ll see concrete examples of how to keep information secure and use cryptography to build your own Python HTTPS application. Topics: 00:00:00 – Introduction 00:01:28 – How did you find the show? 00:02:00 – Evolution of roles in security 00:04:09 – Why is Python leveraged in security? 00:07:51 – Red team vs blue team 00:10:16 – Application security and bug bounties 00:13:31 – What’s your background? 00:14:07 – Company focus between regulations vs engineering 00:18:09 – Ways to get involved and keep learning 00:21:56 – Different perspective from computer science 00:23:35 – Red vs blue reprise 00:25:07 – Shifting landscape of vulnerabilities 00:30:06 – How do you approach tests? 00:32:30 – Incident response 00:35:54 – Video Course Spotlight 00:37:19 – Where does Python come in during an incident? 00:43:08 – Crossing into forensic research 00:48:43 – Where to practice security research and learn more? 00:51:41 – What’s the security community like? 00:56:05 – What are you excited about in the world of Python? 00:57:53 – What do you want to learn next? 01:00:17 – Where can people learn more about what you do? 01:00:39 – Thanks and goodbye Security Specific Tools Written in Python: binwalk: Firmware Analysis Tool | ReFirmLabs binaryalert: BinaryAlert: Serverless, Real-time & Retroactive Malware Detection | airbnb Cuckoo Sandbox - Automated Malware Analysis YARA - The pattern matching Swiss knife for malware researchers Scapy: Python-based interactive packet manipulation program & library radare2-bindings: Bindings of the r2 api for Valabind and friends python-iocextract: Defanged Indicator of Compromise (IOC) Extractor | InQuest yeti: Your Everyday Threat Intelligence capa: The FLARE team’s open-source tool to identify capabilities in executable files PDF Tools | Didier Stevens Incident Response and Memory Forensics: volatility: An advanced memory forensics framework | Volatility Foundation FIR: Fast Incident Response | CERT Societe Generale (Computer Emergency Response Team) GRR Rapid Response: Remote live forensics for incident response | Google Honeypot Resources: What is a Honeypot? How It Can Trap Cyberattackers | CrowdStrike awesome-honeypots: An awesome list of honeypot resources Bug Bounty Programs: Bug Bounty Program List - All Active Programs in 2022 | Bugcrowd Bug Bounty Program - Complete List | HackerOne TOP Bug Bounty Programs & Websites (Jun 2022 Updated List) Security and Hacking Conferences: Black Hat USA 2022 DEF CON® Hacking Conference Home Chaos Communication Congress - Wikipedia CactusCon Additional Links: Blue team (computer security) - Wikipedia Open Source Projects for Software Security | OWASP Foundation HackerOne | #1 Trusted Security Platform and Hacker Program Bugcrowd | Platform Overview pyinstaller · PyPI Wireshark · Go Deep. Python security best practices cheat sheet | Snyk PyCharm Python Security Scanner · Actions · GitHub Marketplace Security scanners for Python and Docker: from code to dependencies Bandit — Designed to find common security issues in Python code black · PyPI Build a Site Connectivity Checker in Python – Real Python Kali Linux | Penetration Testing and Ethical Hacking Linux Distribution Level up your Python skills with our expert-led courses: Exploring HTTPS and Cryptography in Python Django View Authorization: Restricting Access Testing Your Code With pytest Support the podcast & join our community of Pythonistas

Would you like a fast way to share your data science project results as an interactive dashboard instead of a Jupyter notebook? Streamlit is a library for creating simple web apps and dashboards using just Python. This week on the show, Christopher Trudeau is here, bringing another batch of PyCoder’s Weekly articles and projects. We talk about the article “Forget About Jupyter Notebooks - Showcase Your Research Using Dashboards.” It covers the basics of turning a data science script into an interactive dashboard using Streamlit. We also share some additional resources to get you started with the library. Christopher discusses an article covering ways to make life easier when working with Python regular expressions. He talks about composing verbose regexes using f-strings and potentially reusing these patterns. We cover several other articles and projects from the Python community, including a news roundup, a step-by-step project to build a URL shortener with FastAPI, the fact that Python’s functions are sometimes classes, an automatic water pistol pigeon deterrent project, a discussion about music playlists for coding, a project for Python metadata extraction without execution, and a powerful audio-to-MIDI converter library. Course Spotlight: Using Python Class Constructors In this video course, you’ll learn how class constructors work in Python. You’ll also explore Python’s instantiation process, which has two main steps: instance creation and instance initialization. Topics: 00:00:00 – Introduction 00:02:22 – ctx Library Hijacked to Steal AWS Keys 00:04:33 – Typosquatting Attack on ‘requests’ 00:06:55 – Build a URL Shortener With FastAPI and Python 00:10:51 – Sponsor: Rookout 00:11:31 – Python’s Functions Are Sometimes Classes 00:14:05 – Forget Jupyter, Showcase Your Data with Dashboards 00:22:08 – The Unreasonable Effectiveness of f-strings and re.VERBOSE 00:25:43 – Robotic Water Pistol as Pigeon Deterrent 00:28:13 – Video Course Spotlight 00:29:34 – Do You Have a Favorite Playlist for Coding? 00:40:05 – dowsing: Metadata Extraction Without Execution 00:42:01 – spotify/basic-pitch: A lightweight yet powerful audio-to-MIDI converter 00:49:12 – Thanks and goodbye News: ctx Library Hijacked to Steal AWS Keys Typosquatting Attack on ‘requests’ - One of the Most Popular Python packages Topic Links: Build a URL Shortener With FastAPI and Python – In this step-by-step project, you’ll build an app to create and manage shortened URLs. Your Python URL shortener can receive a full target URL and return a shortened URL. You’ll also use the automatically created documentation of FastAPI to try out your API endpoints. Python’s Functions Are Sometimes Classes – Ever use list() or enumerate()? Think of them as functions? They’re not—they’re classes. Sometimes we call classes functions in Python. Why? And what’s a “callable”? Forget Jupyter, Showcase Your Data with Dashboards – Streamlit can be used as an alternative to Jupyter notebooks for sharing research data. Streamlit is a relatively new library for creating simple web apps and dashboards using just Python. Learn why it might be the right choice for your next data project. The Unreasonable Effectiveness of f-strings and re.VERBOSE – A look at one or two ways to make life easier when working with Python regular expressions. Robotic Water Pistol as Pigeon Deterrent – Max built a wifi-equipped water gun to shoot the pigeons on his balcony. It is controlled over the Internet by a Python script running openCV reading the camera image from an old iPhone. See all the details. Discussion: Do You Have a Favorite Playlist for Coding? Projects: dowsing: Metadata Extraction Without Execution spotify/basic-pitch: A lightweight yet powerful audio-to-MIDI converter with pitch bend detection Additional Links: The Twelve-Factor App Streamlit vs Dash vs Voilà vs Panel — Battle of The Python Dashboarding Giants Getting machine learning to production | Vicki Boykis Detecting deforestation from satellite images | André Ferreira Create an app - Streamlit Docs spotify/pedalboard: 🎛 🔊 A Python library for manipulating audio. Episode #96: Manipulating and Analyzing Audio in Python – The Real Python Podcast Episode #15: Python Regular Expressions, Views vs Copies in Pandas, and More – The Real Python Podcast Episode #64: Detecting Deforestation With Python & Using GraphQL With Django and Vue – The Real Python Podcast Level up your Python skills with our expert-led courses: Data Visualization Interfaces in Python With Dash Regular Expressions and Building Regexes in Python Using Python Class Constructors Support the podcast & join our community of Pythonistas

What do you do when your data science project doesn’t fit within your computer’s memory? One solution is to distribute it across multiple worker machines. This week on the show, Guido Imperiale from Coiled talks about Dask and managing large data science projects through distributed computing. We talk about projects where an orchestration system like Dask will help. Dask is designed to take advantage of parallel computing, spreading the work and data across multiple machines. Many familiar techniques for working with pandas and NumPy data are supported with Dask equivalents. We also discuss the differences between managed and unmanaged memory. Guido shares advice on how to tackle memory issues while working with Dask. This week we also talk briefly with Jodie Burchell, who will be a guest host on upcoming episodes. As a data scientist, Jodie will be bringing new topics, projects, and discussions to the show. Course Spotlight: Exploring Scopes and Closures in Python In this Code Conversation video course, you’ll take a deep dive into how scopes and closures work in Python. To do this, you’ll use a debugger to walk through some sample code, and then you’ll take a peek under the hood to see how Python holds variables internally. Topics: 00:00:00 – Introduction 00:01:56 – Guido at PyCon DE 2022 00:02:14 – Working on Dask for Coiled 00:03:27 – Dask project history 00:04:00 – How would someone start to use Dask? 00:10:28 – Managing distributed data 00:11:18 – Data files CSV vs Parquet 00:15:02 – Managed vs unmanaged memory 00:22:42 – Video Course Spotlight 00:24:01 – Dask active memory manager 00:28:36 – Learning best practices and Dask tutorials 00:33:06 – Where is Dask being used? 00:35:45 – What are you excited about in the world of Python? 00:37:55 – What do you want to learn next? 00:40:31 – Thanks, Guido 00:40:40 – Introduction to Jodie Burchell 00:45:28 – Goodbye Show Links: Coiled | Python for Data Science on the Cloud with Dask Guido Imperiale: Introducing the Dask Active Memory Manager - PyCon DE 2022 - YouTube Active Memory Management on Dask.Distributed - Guido Imperiale | Dask Summit 2021 - YouTube Tackling unmanaged memory with Dask | Coiled The Beginner’s Guide to Distributed Computing | Richard Pelgrim Common Mistakes to Avoid when Using Dask | Coiled File Format | Apache Parquet Dask: Scalable analytics in Python PEP 554 – Multiple Interpreters in the Stdlib | peps.python.org CUDA Python | NVIDIA Developer Rust Programming Language Product : Coiled Coiled (@CoiledHQ) / Twitter Jodie Burchell (@t_redactyl) | Twitter Learn Python through Nursery Rhymes and Fairy Tales: Shari Eskenas - Amazon Level up your Python skills with our expert-led courses: Data Cleaning With pandas and NumPy Navigating Namespaces and Scope in Python Exploring Scopes and Closures in Python Support the podcast & join our community of Pythonistas

What are the differences between the various Python game frameworks? Would it help to see a couple of game examples across several libraries to understand the distinctions? This week on the show, Christopher Trudeau is here, bringing another batch of PyCoder’s Weekly articles and projects. We discuss a Real Python article by previous guest Jon Fincher titled “Top Python Game Engines”. Jon compares five different game frameworks and provides example projects and thorough commentary for each. We talk about a blog post by recent guest Adam Johnson about determining if a project is well maintained. He suggests twelve questions to decide whether to add a new dependency to your project. We cover several other articles and projects from the Python community, including a news roundup, Python decorator patterns, finding the smallest and largest values with min() and max(), a discussion about the most-used Python packages, the pony object-relational mapper, and a project to read PEPs in your console. Course Spotlight: Using Pygame to Build an Asteroids Game in Python In this course, you’ll build a clone of the Asteroids game in Python using Pygame. Step by step, you’ll add images, input handling, game logic, sounds, and text to your program. Topics: 00:00:00 – Introduction 00:02:04 – News: Python Release Python 3.11.0b1 00:02:56 – Faster CPython project 00:04:16 – nogil conversation at the 2022 summit 00:06:08 – PEP 690: Lazy Imports 00:08:14 – DjangoCon US & Europe 2022 Call for Proposals 00:09:25 – Top Python Game Engines 00:20:38 – Sponsor: CData Software 00:21:20 – Python Decorator Patterns 00:24:00 – The Well-Maintained Test: 12 Questions for New Dependencies 00:29:27 – Python’s min() and max(): Find Smallest and Largest Values 00:33:33 – Video Course Spotlight 00:34:44 – Which Python Packages Do You Use the Most? 00:41:42 – pony: Pony Object Relational Mapper 00:47:41 – pepdocs: Read PEPs in Your Console 00:50:20 – Thanks and goodbye News: Python Release Python 3.11.0b1 Faster CPython faster-cpython/cpython: The Python programming language nogil conversation at the 2022 summit PEP 690: Lazy Imports DjangoCon Europe 2022 Call for Proposals DjangoCon US 2022 Call for Proposals Topic Links: Top Python Game Engines – In this tutorial, you’ll explore several Python game engines available to you. For each, you’ll code simple examples and a more advanced game to learn the game engine’s strengths and weaknesses. Python Decorator Patterns – Decorators are a way of wrapping functions around functions, they’re a common technique for providing pre- and post-conditions on your code. Learn about the different ways decorators get invoked and how to write each pattern. The Well-Maintained Test: 12 Questions for New Dependencies – There is lots of openly available code out there, but how do you know if you should build a dependency on some random coder’s package? 12 Questions you should ask yourself before using a library. Python’s min() and max(): Find Smallest and Largest Values – In this tutorial, you’ll learn how to use Python’s built-in min() and max() functions to find the smallest and largest values. You’ll also learn how to modify their standard behavior by providing a suitable key function. Finally, you’ll code a few practical examples of using min() and max(). Discussion: Which Python Packages Do You Use the Most? Projects: pony: Pony Object Relational Mapper pepdocs: Read PEPs in Your Console Additional Links: Eric Snow on Twitter:”We need your help making CPython faster. Publish benchmarks for your app or library.” Episode #59: Organizing and Restructuring DjangoCon Europe 2021 – The Real Python Podcast PyGame: A Primer on Game Programming in Python – Real Python Make a 2D Side-Scroller Game With PyGame – Real Python Primer on Python Decorators – Real Python The Joel Test: 12 Steps to Better Code – Joel on Software Episode #97: Improving Your Django and Python Developer Experience – The Real Python Podcast pyflakes · PyPI coverage · PyPI pudb · PyPI Django | The web framework for perfectionists with deadlines django-awl · PyPI waelstow · PyPI six · PyPI Pygments — Welcome! chardet · PyPI certifi · PyPI pandas - Python Data Analysis Library Project Jupyter | Home Bokeh Level up your Python skills with our expert-led courses: Using Pygame to Build an Asteroids Game in Python Python's map() Function: Transforming Iterables Python Decorators 101 Support the podcast & join our community of Pythonistas

Would you like a way to send structured serialized data between different platforms and languages? What if the data was self-documenting, could automatically generate Python code, and would validate itself? This week on the show, Liran Haimovitch talks about protocol buffers and communicating with microservices through Remote Procedure Calls (RPC). Protocol buffers, aka protobuf, are a language-neutral, platform-neutral system for serializing structured data. Liran talks about how they go beyond text-based protocols like JSON, providing the benefits above, along with faster transmissions and a smaller footprint. Liran shares how his company uses protobuf to communicate between their tools. We also discuss using gRPC to communicate between microservices and scaling infrastructure in either direction. Course Spotlight: Testing Your Code With pytest In this video course, you’ll learn how to take your testing to the next level with pytest. You’ll cover intermediate and advanced pytest features such as fixtures, marks, parameters, and plugins. With pytest, you can make your test suites fast, effective, and less painful to maintain. Topics: 00:00:00 – Introduction 00:01:59 – PyCon US 2022 Talk on protobuf 00:04:46 – PyCon 2019 Talk on Understanding Python’s Debugging Internals 00:05:34 – The Production-First Mindset Podcast 00:07:03 – Protobuf and serialization 00:11:17 – Static vs dynamic serializers 00:13:58 – Text vs binary serializers and metadata 00:21:08 – How long have you been using protobuf? 00:21:40 – What does it look like to set up? 00:24:45 – Video Course Spotlight 00:26:11 – Performance challenges and trade-offs 00:34:29 – Remote procedure calls 00:41:13 – Using RPC for microservices 00:47:21 – Scaling your infrastructure up or down 00:50:35 – Working across different languages 00:54:02 – What is Rookout? 00:55:11 – What are you excited about in the world of Python? 00:55:59 – What do you want to learn next? 00:56:57 – How can people learn more about what you do? 00:57:31 – Thanks and goodbye Show Links: Rookout | Painless Cloud-Native Debugging Liran Haimovitch - Understanding Python’s Debugging Internals - PyCon 2019 - YouTube The Production-First Mindset Podcast Liran Haimovitch: Effective Protobuf: Everything You Wanted To Know, But Never Dared To Ask - PyCon 2022 - YouTube Protocol Buffers  |  Google Developers Frequently Asked Questions - Protocol Buffers  |  Google Developers Thrift protocol stack — Thrift Tutorial 1.0 documentation Python Microservices With gRPC – Real Python gRPC - Modern Open Source High Performance Remote Procedure Call Framework gRPC vs REST: Understanding gRPC, OpenAPI and REST and when to use them in API design | Google Cloud Blog Welcome to PyCon US 2022 Rust Programming Language Level up your Python skills with our expert-led courses: Working With JSON in Python Testing Your Code With pytest Deploy Your Python Script on the Web With Flask Support the podcast & join our community of Pythonistas

Did you know you can add testing to your Python code while simultaneously documenting it? Using docstrings, you can create examples of how your functions should interact in a Python REPL and test them with the built-in doctest module. This week on the show, Christopher Trudeau is here, bringing another batch of PyCoder’s Weekly articles and projects. Christopher shares an article by previous guest Mike Driscoll about testing with doctest. This is a great way to get started with testing your own code, and it offers the added benefit of documenting functionality. We talk about the recent Real Python article “Pagination for a User-Friendly Django App.” Spreading your content across multiple pages can significantly improve the user experience of your web application. This article takes you through configuring Django’s built-in pagination tool and how to combine it with other web tools. We discuss a recent article about Python type hints and the author’s disappointment. We also include reactions from a couple of online communities. We cover several other articles and projects from the Python community, including why it’s important to close files in Python, how dunder methods are awesome, a bidirectional Python dictionary, prettier git diffs, and a command-line game to learn git. Spotlight: Python Coding Interviews: Tips & Best Practices In this step-by-step course, you’ll learn how to take your Python coding interview skills to the next level and use Python’s built-in functions and modules to solve problems faster and more easily. Topics: 00:00:00 – Introduction 00:02:15 – PyCon US 2022 Follow-up 00:07:57 – Why Is It Important to Close Files in Python? 00:15:17 – Dunder Methods in Python: The Ugliest Awesome Sauce 00:24:26 – Sponsor: Mailtrap 00:25:08 – Python Testing With doctest 00:28:20 – Python Bidirectional Dictionary 00:30:27 – Pagination for a User-Friendly Django App 00:36:07 – Video Course Spotlight 00:37:27 – Python’s “Type Hints” are a bit of a disappointment to me 00:52:25 – dunk: Prettier Git Diffs 00:53:43 – git-gud: Command-Line Game to Learn git 00:55:40 – Thanks and goodbye Topic Links: Why Is It Important to Close Files in Python? – Model citizens use context managers to open and close file resources in Python, but have you ever wondered why it’s important to close files? In this tutorial, you’ll take a deep dive into the reasons why it’s important to close files and what can happen if you dont. Dunder Methods in Python: The Ugliest Awesome Sauce – Double-underscore methods, also known as “dunder methods” or “magic methods” are an ugly way of bringing beauty to your code. Learn about constructors, __repr__, __str__, operator overloading, and getting your classes working with Python functions like len(). Python Testing With doctest – Python’s doctest module allows you to write unit tests through REPL-like sessions in your docstrings. Learn how to write and execute doctest code. Also available in video. Python Bidirectional Dictionary – Learn about the Bidict library, a bidirectional dictionary where your keys and your values can both be used to look up an item. This can be a useful tool when dealing with mapped data, like country code to country name, where you want to look up either side of the relationship. Pagination for a User-Friendly Django App – In this tutorial, you’ll learn how to serve paginated content in your Django apps. Using Django pagination can significantly improve your website’s performance and give your visitors a better user experience. Discussion: Python’s “Type Hints” are a bit of a disappointment to me | Original Article Python’s “Type Hints” | Lobsters Thread Python’s “Type Hints” | Hacker News Thread Projects: dunk: Prettier Git Diffs git-gud: Command-Line Game to Learn git Additional Links: Episode #47: Unraveling Python’s Syntax to Its Core With Brett Cannon – The Real Python Podcast Python Coding Interviews: Tips & Best Practices – Real Python Episode #88: Discussing Type Hints, Protocols, and Ducks in Python – The Real Python Podcast Up and Running with Git Online Course - Talk Python Training Python’s doctest: Document and Test Your Code at Once - Real Python tutorial Level up your Python skills with our expert-led courses: Python Type Checking Python Coding Interviews: Tips & Best Practices Testing Your Code With pytest Support the podcast & join our community of Pythonistas

Have you heard about the projects working toward getting Python to run in the browser? Maybe you would like to try it out for yourself, by building an interactive Python REPL with Pyodide and WebAssembly (WASM). This week on the show, Christopher Trudeau is here, and he’s brought another batch of PyCoder’s Weekly articles and projects. We talk about a step-by-step project that shows you how to build a Python code editor in the browser using WebAssembly through Pyodide and CodeMirror. You’re going to be hearing a lot about Pyodide in the coming months, and here’s a chance for you to play around while building a small project. Christopher shares an article about the power of Python f-strings. It covers some lesser-known features like variable debugging, nesting, and detailed formatting. We also have a couple of topics up for discussion this week. They’re both related to finding work as a Python developer. We cover several other articles and projects from the Python community, including the 2038 date problem, a primer about Python virtual environments, how to build a site connectivity checker in Python, a free book on digital signal processing in Python, and a project to build a voice-activated, password-protected wooden box. Spotlight: Using Python’s datetime Module Have you ever wondered about working with dates and times in Python? In this video course, you’ll learn all about the built-in Python datetime library. You’ll also learn about how to manage time zones and daylight saving time, and how to do accurate arithmetic on dates and times. Topics: 00:00:00 – Introduction 00:02:38 – 2038 Date Problem 00:07:46 – Python Virtual Environments: A Primer 00:16:06 – Python f-Strings Are More Powerful Than You Might Think 00:20:19 – Sponsor: CData Software 00:21:01 – Build an Editor in Python and WebAssembly 00:28:19 – Build a Site Connectivity Checker in Python 00:30:21 – What Jobs Can I Have Knowing Python? 00:39:53 – Video Course Spotlight 00:41:12 – Projects for a Self-Taught Dev to Help Get a Job? 00:50:46 – ThinkDSP: Free Book on Digital Signal Processing in Python 00:53:14 – Durin’s Box: Voice-Activated, Password-Protected Wooden Box 00:55:05 – Thanks and goodbye Topic Links: 2038 Date Problem (Funny, but True) – Coders old enough to remember Y2K are already dreading 2038. Join the conversation. Python Virtual Environments: A Primer – In this tutorial, you’ll learn how to use a Python virtual environment to manage your Python projects. You’ll also dive deep into the structure of virtual environments built using the venv module, as well as the reasoning behind using virtual environments. Python f-Strings Are More Powerful Than You Might Think – Learn about the lesser-known features of Python’s f-strings, including date formatting, variable debugging, nested f-strings, and conditional formatting. Build an Editor in Python and WebAssembly – Step-by-step instructions on how to build a code editor in the browser using Python and WebAssembly (WASM), via Pyodide and CodeMirror. Build a Site Connectivity Checker in Python – In this step-by-step project, you’ll build a Python site connectivity checker for the command line. While building this app, you’ll integrate knowledge related to making HTTP requests with standard-library tools, creating command-line interfaces, and managing concurrency with asyncio and aiohttp. Discussions: What Jobs Can I Have Knowing Python? Projects for a Self-Taught Dev to Help Get a Job? Projects: ThinkDSP: Free Book on Digital Signal Processing in Python Durin’s Box: Voice Activated, Password Protected, Wooden Box Additional Links: Tushar Sadhwani on Twitter: Add this to bash profile - export PIP_REQUIRE_VIRTUALENV=true Python 3’s f-Strings: An Improved String Formatting Syntax – Real Python A Guide to the Newer Python String Format Techniques – Real Python Cool New Features in Python 3.8 – Real Python “Why I Hate Frameworks”, Benji Smith (The Joel on Software Discussion Group) What are the top 10 job skills for the future? | World Economic Forum PyCoder’s Weekly | A Weekly Python E-Mail Newsletter Level up your Python skills with our expert-led courses: Using Python's datetime Module Python 3's F-Strings: An Improved String Formatting Syntax Formatting Python Strings Support the podcast & join our community of Pythonistas