If your code lets other people supply callback functions, it's important to specify the function signature you expect, and check that functions support that. Adding extra parameters later would break other peoples code unless you're careful. The backcall package provides a way of specifying the callback signature using a prototype function.

This module provides utilities for multiplexing interactions with lists of Python objects.

This package provides:

• PEP 561 typing stubs packages for the Trio project packages:

  • trio (trio-stubs)

  • outcome (outcome-stubs)

  • async_generator (async_generator-stubs)

• A package trio_typing containing types that Trio programs often want to refer to (AsyncGenerator[Y, S] and TaskStatus[T]) and a mypy plugin that smooths over some limitations in the basic type hints.

cliapp is a Python framework for command line programs. It contains the typical stuff such programs need to do, such as parsing the command line for options, and iterating over input files.

Automat is a library for concise, idiomatic Python expression of finite-state automata (particularly deterministic finite-state transducers).

Unidecode provides ASCII transliterations of Unicode text. Unidecode is useful when integrating with legacy code that doesn't support Unicode, or for ease of entry of non-Roman names on a US keyboard, or when constructing ASCII machine identifiers from human-readable Unicode strings that should still be somewhat intelligible.

The aim of the wrapt module is to provide a transparent object proxy for Python, which can be used as the basis for the construction of function wrappers and decorator functions.

pyfavicon is an async favicon fetcher.

Yamllint is a linter for YAML files. yamllint does not only check for syntax validity, but for weirdnesses like key repetition and cosmetic problems such as lines length, trailing spaces, indentation, etc.

This package provides tools to build manual pages from Python's ArgumentParser object.

distro provides information about the OS distribution it runs on, such as a reliable machine-readable ID, or version information.

It is the recommended replacement for Python's original `platform.linux_distribution` function (which will be removed in Python 3.8). distro also provides a command-line interface to output the platform information in various formats.

This is a Python library for computing common heuristic accuracy scores for various music/audio information retrieval/signal processing tasks.

python-gphoto2 is a comprehensive Python interface (or binding) to libgphoto2. It is built using SWIG to automatically generate the interface code.

This package provides a version helper that lets you automatically use the latest vX.X.X Git tag as the version in your Python package. It also supports getting the version from Python source distributions or, once your package is installed, via pkg_resources (part of setuptools).

Bleach is an easy whitelist-based HTML-sanitizing tool.

Inflection is a string transformation library. It singularizes and pluralizes English words, and transforms strings from CamelCase to underscored string.

This library connects to a database, using SQLAlchemy URL connect strings, then issue SQL commands within IPython or IPython Notebook.

This tool implements quantile normalization. It properly resolves rank ties, which is important when ties happen frequently, such as when working with discrete numbers (integers) in count tables. This implementation should be relatively fast, and can use multiple cores to sort the columns and tie-resolvement is accelerated by numba.

rfc3986 is a Python implementation of RFC 3986 including validation and authority parsing. This module also supports RFC 6874 which adds support for zone identifiers to IPv6 addresses.

XlsxWriter is a Python module that can be used to write text, numbers, formulas and hyperlinks to multiple worksheets in an Excel 2007+ XLSX file.

This module defines a decorator to wrap legacy APIs. The primary use case is APIs defined before keyword-only parameters existed.

Amply allows you to load and manipulate AMPL/GLPK data as Python data structures.

An immutable mapping type for Python. The underlying datastructure is a Hash Array Mapped Trie (HAMT) used in Clojure, Scala, Haskell, and other functional languages.

This package implements a functionalit of signing and verification tools for Conda. Based on The Update Framework (TUF), conda-content-trust is intended to ensure that when users in the conda ecosystem obtain a package or data about that package, they can know whether or not it is trustworthy (e.g. originally comes from a reliable source and has not been tampered with). A basic library and basic CLI are included to provide signing, verification, and trust delegation functionality.