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.

SymPy is a Python library for symbolic mathematics. It aims to become a full-featured computer algebra system (CAS) while keeping the code as simple as possible in order to be comprehensible and easily extensible.

Wcwidth measures the number of terminal column cells of wide-character codes. It is useful for those implementing a terminal emulator, or programs that carefully produce output to be interpreted by one. It is a Python implementation of the wcwidth and wcswidth C functions specified in POSIX.1-2001 and POSIX.1-2008.

Py is a Python library for file name parsing, .ini file parsing, I/O, code introspection, and logging.

This library implements eval'able S-expression in Python using tuple-like objects.

By design asyncio does not allow its event loop to be nested. This presents a practical problem: when in an environment where the event loop is already running it's impossible to run tasks and wait for the result. This module patches asyncio to allow nested use of asyncio.run and loop.run_until_complete.

This package generates passphrases by concatenating words randomly picked from wordlists. It supports several sources of randomness (including real life dice) and different wordlists (including cryptographically signed ones).

This Python module provides a solver-agnostic abstraction for working with SMT formulas. For example, it allows manipulation and solving such formulas.

textdistance is a pure Python library for comparing distance between two or more sequences by many algorithms.

Radon is a Python tool which computes various code metrics. Supported metrics are:

• raw metrics: SLOC, comment lines, blank lines, &c.

• Cyclomatic Complexity (i.e., McCabe’s Complexity)

• Halstead metrics (all of them)

• the Maintainability Index (a Visual Studio metric)

This package provides a replacement for Python's subprocess feature.

This package provides declarative command-line interfaces using argparse and dataclasses.

xdg-base-dirs is a Python module that provides functions to return paths to the directories defined by the XDG Base Directory Specification, to save you from duplicating the same snippet of logic in every Python utility you write that deals with user cache, configuration, or data files.

Celery is an asynchronous task queue/job queue based on distributed message passing. It is focused on real-time operation, but supports scheduling as well. The execution units, called tasks, are executed concurrently on a single or more worker servers using multiprocessing, Eventlet, or gevent. Tasks can execute asynchronously (in the background) or synchronously (wait until ready).

Click is a Python package for creating command line interfaces in a composable way with as little code as necessary. Its name stands for "Command Line Interface Creation Kit". It's highly configurable but comes with sensible defaults out of the box.

This package provides a simple package with utils to check whether versions number match PEP 440.

This package provides Python language bindings for IronMQ. IronMQ is an elastic message queue for managing data and event flow within cloud applications and between systems.

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.

SSHLibrary is a Robot Framework library providing support for SSH and SFTP. It has the following main usages:

• Executing commands on the remote machine, either blocking or non-blocking.

• Writing and reading in an interactive shell.

• Transferring files and directories over SFTP.

• Ensuring that files and directories exist on the remote machine.

Mypy linter integration for use with python-lsp-server.

Pexpect is a pure Python module for spawning child applications; controlling them; and responding to expected patterns in their output. Pexpect works like Don Libes’ Expect. Pexpect allows your script to spawn a child application and control it as if a human were typing commands.

Extra Platforms detects and identifies operating systems, platforms, architectures, and OS families. It groups them by family for conditional logic in cross-platform applications.

Colorcet is a collection of perceptually accurate 256-color colormaps for use with Python plotting programs like Bokeh, Matplotlib, HoloViews, and Datashader.

icmplib is a supporting library for both IPv4 and IPv6 networks. ICMP is typically used for diagnostic or control purposes - well known from utilities such as ping(1).