PyDev.Debugger is a capable Python debugger used in PyDev and other IDEs.

This Python library provides a recursive descent parser with backtracking and memoization (a.k.a. packrat parser). Arpeggio grammars are based on PEG formalism. Arpeggio's main use is a foundation for a toolchain for DSL development but it can be used for all sorts of general purpose parsing.

LibCST parses Python source code as a CST tree that keeps all formatting details (comments, whitespaces, parentheses, etc). It's useful for building automated refactoring (codemod) applications and linters. LibCST creates a compromise between an Abstract Syntax Tree (AST) and a traditional Concrete Syntax Tree (CST). By carefully reorganizing and naming node types and fields, LibCST creates a lossless CST that looks and feels like an AST.

This Python module enables remote procedure calls, clustering, and distributed-computing. For this purpose, it makes use of object-proxying, a technique that employs python's dynamic nature, to overcome the physical boundaries between processes and computers, so that remote objects can be manipulated as if they were local.

Ubelt is a small library of simple functions that extend the Python standard library. It includes an API to simplify common problems such as caching, timing, computing progress, among other things.

Awkward CPP provides precompiled routines for the awkward package. It is not useful on its own, only as a dependency for awkward.

StackTrace is a Robot Framework listener that prints a stack trace directly to the terminal to ease debugging.

This package provides a MediaWiki API client.

PyLD is an implementation of the JSON-LD specification.

AsyncClick is a fork of Click that works well with anyio, Trio, or asyncio.

Lmfit provides a high-level interface to non-linear optimization and curve fitting problems for Python. It builds on and extends many of the optimization methods of scipy.optimize. Initially inspired by (and named for) extending the Levenberg-Marquardt method from scipy.optimize.leastsq, lmfit now provides a number of useful enhancements to optimization and data fitting problems.

This package extends click.Group to invoke a command without explicit subcommand name.

num2words is a library that converts numbers like 42 to words like forty-two. It supports multiple languages, and can even generate ordinal numbers like forty-second.

This package provides a Python library for working with and comparing language codes.

python-langcodes implements BCP 47, the IETF Best Current Practices on Tags for Identifying Languages. BCP 47 is also known as RFC 5646. It subsumes ISO 639 and is backward compatible with it, and it also implements recommendations from the Unicode CLDR.

python-langcodes can also refer to a database of language properties and names, built from Unicode CLDR and the IANA subtag registry, if you install python-language-data.

This plugin enables git-like did-you-mean feature in Click.

dirty-equals is a Python library that (mis)uses the __eq__ method to make code (generally unit tests) more declarative and therefore easier to read and write.

This is a library to allow the easy creation of Relay-compliant servers using the GraphQL Python reference implementation of a GraphQL server. It should be noted that the code is a exact port of the original graphql-relay js implementation from Facebook.

identify is a file identification library for Python. Given a file (or some information about a file), return a set of standardized tags identifying what the file is.

pyfavicon is an async favicon fetcher.

Jsonschema is an implementation of JSON Schema for Python.

aiopg is a library for accessing a PostgreSQL database from the asyncio (PEP-3156/tulip) framework. It wraps asynchronous features of the Psycopg database driver.

TFTPy is a trivial file transfer protocol (TFTP) Python library. It can be used to act both as a TFTP client or TFTP server.

Straight Plugin provides a type of plugin you can create from almost any existing Python modules, and an easy way for outside developers to add functionality and customization to your projects with their own plugins.

Autopage is a Python library to automatically display terminal output from a program in a pager such as less.