for item in list
do
    echo "$item"
done

for ((i=0; i<10; i++))
do
    echo "$i"
done

…and more…

CyberChef is a simple, intuitive web app for carrying out all manner of "cyber" operations within a web browser. These operations include simple encoding like XOR and Base64, more complex encryption like AES, DES and Blowfish, creating binary and hexdumps, compression and decompression of data, calculating hashes and checksums, IPv6 and X.509 parsing, changing character encodings, and much more.

The tool is designed to enable both technical and non-technical analysts to manipulate data in complex ways without having to deal with complex tools or algorithms. It was conceived, designed, built and incrementally improved by an analyst in their 10% innovation time over several years.

"Get or create" is a very common operation for syncing data in the database, but implementing it correctly may be trickier than you may expect. If you ever had to implement it in a real system with real-life load, you may have overlooked potential race conditions, concurrency issues and even bloat!

Typed and DST-safe datetimes for Python, written in Rust

An extremely fast Python linter, written in Rust.

Austral is a new systems programming language. It uses linear types to provide memory safety and capability-secure code, and is designed to be simple enough to be understood by a single person, with a focus on readability, maintainbility, and modularity.

Formula to determine perceived brightness of RGB color

Make your functions return something meaningful, typed, and safe!
Features

Brings functional programming to Python land

Provides a bunch of primitives to write declarative business logic

Enforces better architecture

Fully typed with annotations and checked with mypy, PEP561 compatible

Adds emulated Higher Kinded Types support

Provides type-safe interfaces to create your own data-types with enforced laws

Has a bunch of helpers for better composition

Pythonic and pleasant to write and to read 🐍

Support functions and coroutines, framework agnostic

Easy to start: has lots of docs, tests, and tutorials