Issue #439 (Sept. 22, 2020) (23)

Git Internals: Learn by Building Your Own Git Master the basics of git by building your own version in Python using this creative and interactive tutorial. NIKITA LESHENKO

Python Practice Problems: Get Ready for Your Next Interview In this tutorial, you’ll prepare for future interviews by working through a set of Python practice problems that commonly appear in coding tests. You’ll work through the problems yourself and then compare your results with solutions developed by the Real Python team. REAL PYTHON

Array Programming With NumPy In this review published in Nature and co-authored by NumPy creator Travis Oliphant, the authors explore how NumPy increasingly acts as an interoperability layer between array computation libraries like PyTorch and Tensorflow. CHARLES R. HARRIS ET AL

Exceptions as Control Flow Using exceptions as control flow is a practice typically discouraged, and for some good reasons. But is there any time when this approach makes sense? GEORGE opinion

Working With Linked Lists in Python In this course, you’ll learn what linked lists are and when to use them, such as when you want to implement queues, stacks, or graphs. You’ll also learn how to use collections.deque to improve the performance of your linked lists and how to implement linked lists in your own projects. REAL PYTHON course

How to Never Use Lambdas: Python 3 Edition Ever see something so ugly and hideous that you can’t help but stare at it? Here’s a whole collection of Python lambda functions that will have you pulling your hair out while you’re unable to look away. MINEROBBER9000

Unravelling unary arithmetic operators Take a look at how unary operators work under the hood in Python. BRETT CANNON

The mmap() Copy-On-Write Trick: Reducing Memory Usage of Array Copies Memory usage usually scales with the number of copies: if your original array was 1GB of RAM, each copy will take 1GB of RAM. But often, you’re just changing a small part of the array. Ideally, the memory cost would only be the parts of the copies that you changed. Learn how to do...

Numbers in Python In this tutorial, you’ll learn about numbers and basic math in Python. You’ll explore integer, floating-point numbers, and complex numbers and see how perform calculations using Python’s arithmetic operators, math functions, and number methods. REAL PYTHON

Never Shard a Postgres Instance Again! How to Build Your Python Apps on CockroachDB Scale fast, survive anything, thrive everywhere. CockroachDB is an open source, indestructible SQL database for developers building modern applications. Compatible with your favorite Python ORMs, including Django, PonyORM, and SQLAlchemy. COCKROACH LABS sponsor

Python Code Cleanup for Beginners Here are twelve actionable steps you can use to clean-up your Python code to make it look more professional and increase readability. ROMAN IMANKULOV

Dictionary View Objects in Python Learn how to create read-only dictionary-like objects using the MappingProxyType in Python’s types package. JOHN LEKBERG

Building a CRUD App With FastAPI and MongoDB Learn how to develop an an asynchronous REST API with FastAPI and the Motor package with MongoDB. ABDULAZEEZ ABDULAZEEZ ADESHINA • Shared by Abdulazeez Abdulazeez Adeshina

Profile, Understand & Optimize Code Performance with Blackfire.io Blackfire is a deterministic profiler, measuring how code consumes resources at run-time. Appealing graphs & UI enable you to find performance bottlenecks & understand the code’s behavior. Works on production, test/staging & development with no overhead. BLACKFIRE sponsor

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