#439 – SEPTEMBER 22, 2020
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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
Python Developers Are in Demand on Vettery
Vettery is an online hiring marketplace that’s changing the way people hire and get hired. Ready for a bold career move? Make a free profile, name your salary, and connect with hiring managers from top employers today →
VETTERY sponsor
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
Discussions
Where Do You Run a Script That Automates a Task?
It’s gotta run somewhere…
REDDIT
Python Jobs
Senior Backend Software Engineer (Los Angeles, CA, USA)
Software Engineer (San Diego County, CA, USA)
Data Scientist (Johnston, IA, USA)
Senior Software Engineer, Data Science (Remote)
Articles & Tutorials
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
Find Performance Bottlenecks in Python Code
“We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.” - Donald Knuth Blackfire is built to let you find the 3%. Quick install, appealing and user-friendly UI →
BLACKFIRE sponsor
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 this using mmap() copy-on-write with NumPy.
ITAMAR TURNER-TRAURING
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
Projects & Code
Events
PyCon Turkey (Virtual)
September 26 to September 27, 2020
PYCON.ORG
Happy Pythoning!
This was PyCoder’s Weekly Issue #439.
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