websockets is a library for building WebSocket servers and clients in Python with a focus on correctness and simplicity.

Built on top of asyncio, Python's standard asynchronous I/O framework, it provides an elegant coroutine-based API.

The build command invokes the PEP 517 hooks to build a distribution package. It is a simple build tool and does not perform any dependency management. It aims to keep dependencies to a minimum, in order to make bootstrapping easier.

The Python Language Server pylsp is an implementation of the Python 3 language specification for the Language Server Protocol (LSP). This tool is used in text editing environments to provide a complete and integrated feature-set for programming Python effectively.

TLDExtract accurately separates the TLD from the registered domain and subdomains of a URL, using the Public Suffix List. By default, this includes the public ICANN TLDs and their exceptions. It can optionally support the Public Suffix List's private domains as well.

Palettable (formerly brewer2mpl) is a library of color palettes for Python. It’s written in pure Python with no dependencies, but it can supply color maps for matplotlib. You can use Palettable to customize matplotlib plots or supply colors for a web application.

PySnpTools is a library for reading and manipulating genetic data. It can, for example, efficiently read whole PLINK *.bed/bim/fam files or parts of those files. It can also efficiently manipulate ranges of integers using set operators such as union, intersection, and difference.

Nose-xcover is a companion to the built-in nose.plugins.cover. This plugin will write out an XML coverage report to a file named coverage.xml.

It will honor all the options you pass to the Nose coverage plugin, especially -cover-package.

Matplotlib is a Python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. Matplotlib can be used in Python scripts, the python and ipython shell, web application servers, and six graphical user interface toolkits.

QScintilla is a port to Qt of Neil Hodgson's Scintilla C++ editor control. QScintilla includes features especially useful when editing and debugging source code. These include support for syntax styling, error indicators, code completion and call tips.

This package provides the Python bindings.

This is a toolset for developing and deploying serverless Python code in AWS Lambda. This is a fork of Nick Ficano's Python-lambda package. It is frozen for the needs of projects at the 4D Nucleome Data Coordination and Integration Center (4DN-DCIC).

GeoIP2Fast is a fast GeoIP2 country/city/asn lookup library that supports IPv4 and IPv6. A search takes less than 0.00003 seconds. It has its own data file updated twice a week with Maxmind-Geolite2-CSV, supports IPv4/IPv6 and is pure Python.

Click is a "Python package for creating beautiful command line interfaces". Rich is a "Python library for rich text and beautiful formatting in the terminal". The intention of rich-click is to provide attractive help output from click, formatted with rich, with minimal customization required.

The pyparsing module is an alternative approach to creating and executing simple grammars, vs. the traditional lex/yacc approach, or the use of regular expressions. The pyparsing module provides a library of classes that client code uses to construct the grammar directly in Python code.

Hypothesis is a library for testing your Python code against a much larger range of examples than you would ever want to write by hand. It’s based on the Haskell library, Quickcheck, and is designed to integrate seamlessly into your existing Python unit testing work flow.

Hypothesis is a library for testing your Python code against a much larger range of examples than you would ever want to write by hand. It’s based on the Haskell library, Quickcheck, and is designed to integrate seamlessly into your existing Python unit testing work flow.

DJI Tello drone Python interface using the official Tello SDK and Tello EDU SDK. This library has the following features:

• Implementation of all tello commands

• Retrieve a video stream easily

• Receive and parse state packets

• Control a swarm of drones.

The flufl.lock package provides NFS-safe file locking with timeouts for POSIX systems. It is similar to the O_EXCL option of the open system call but uses a lockfile. Lock objects support lock-breaking and have a maximum lifetime built-in.

The Unified Form Language (UFL) is a domain specific language for declaration of finite element discretizations of variational forms. More precisely, it defines a flexible interface for choosing finite element spaces and defining expressions for weak forms in a notation close to mathematical notation.

SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL. It provides a full suite of well known enterprise-level persistence patterns, designed for efficient and high-performing database access, adapted into a simple and Pythonic domain language.

Kiwi is an efficient C++ implementation of the Cassowary constraint solving algorithm. Kiwi has been designed from the ground up to be lightweight and fast. Kiwi ranges from 10x to 500x faster than the original Cassowary solver with typical use cases gaining a 40x improvement. Memory savings are consistently > 5x.

SQLAlchemy is the Python SQL toolkit and ORM that gives application developers the full power and flexibility of SQL. It provides a full suite of well known enterprise-level persistence patterns, designed for efficient and high-performing database access, adapted into a simple and Pythonic domain language.

Zope.proxy provides generic, transparent proxies for Python. Proxies are special objects which serve as mostly-transparent wrappers around another object, intervening in the apparent behavior of the wrapped object only when necessary to apply the policy (e.g., access checking, location brokering, etc.) for which the proxy is responsible.

Css-parser is a Python package for parsing and building CSS Cascading Style Sheets. Currently it provides a DOM only and no rendering options.

It's a fork of cssutils 1.0.2, updated and modified for parsing ebooks, due to cssutils not receiving updates as of 1.0.2.

SQLAlchemy is the Python SQL toolkit and ORM that gives application developers the full power and flexibility of SQL. It provides a full suite of well known enterprise-level persistence patterns, designed for efficient and high-performing database access, adapted into a simple and Pythonic domain language.