Orjson is a fast, correct JSON library for Python. It benchmarks as the fastest Python library for JSON and is more correct than the standard json library or other third-party libraries. It serializes dataclass, datetime, numpy, and UUID instances natively.

This package provides a tiny, secure, URL-friendly, unique string ID generator for Python.

This package provides a Python library that can parse OPML, FOAF, and iGoogle subscription lists.

Pelican is a tool to generate a static blog from reStructuredText, Markdown input files, and more. Pelican uses Jinja2 for templating and is very extensible.

This package provides typing stubs for requests.

This module performs conversions between Python values and C bit field structs represented as Python byte strings. It is intended to have a similar interface as the struct module from Python, but working on bits instead of primitive data types like char, int, etc.

This package lets you read image and metadata from many bio-scientific formats such as plain TIFF, BigTIFF, OME-TIFF, STK, LSM, SGI,NIH, ImageJ, MicroManager, MD GEL, and FluoView files. It also lets you write numpy arrays to TIFF, BigTIFF, and ImageJ hyperstack compatible files.

Trio strives to be a production-quality, async/await-native I/O library for Python. Like all async libraries, its main purpose is to help you write programs that do multiple things at the same time with parallelized I/O.

ipdb exports functions to access the IPython debugger, which features tab completion, syntax highlighting, better tracebacks and better introspection than Python's standard pdb debugger, with which it shares the same interface.

SeleniumLibrary is a web testing library for Robot Framework that utilizes the Selenium tool internally.

PYHDF4 is a python wrapper around the NCSA HDF version 4 library, which implements the SD (Scientific Dataset), VS (Vdata) and V (Vgroup) API’s. NetCDF files can also be read and modified. It is a successor of Python-HDF4 which is a fork of pyhdf.

This package is a tiny, zero-dependencies library that makes it easy to add function (or object) registries to your code. Function registries are helpful when you have objects that need to be both easily serializable and fully customizable. Instead of passing a function into your object, you pass in an identifier name, which the object can use to lookup the function from the registry. This makes the object easy to serialize, because the name is a simple string. If you instead saved the function, you'd have to use Pickle for serialization, which has many drawbacks.

This package provides a Doxygen filter for Python.

The pip-run command provides on-demand temporary package installation for a single interpreter run. It replaces this series of commands:

$ virtualenv --python pythonX.X --system-site-packages /tmp/env
$ /tmp/env/bin/pip install pkg1 pkg2 -r reqs.txt
$ /tmp/env/bin/python ...
$ rm -rf /tmp/env

PyDispatcher is an enhanced version of Patrick K. O’Brien’s original dispatcher.py module. It provides the Python programmer with a robust mechanism for event routing within various application contexts.

Included in the package are the robustapply and saferef modules, which provide the ability to selectively apply arguments to callable objects and to reference instance methods using weak-references.

Chameleon is an HTML/XML template engine for Python. It uses the page templates language.

The Python X Library is intended to be a fully functional X client library for Python programs. It is useful to implement low-level X clients. It is written entirely in Python.

NumPy is a large library used everywhere in scientific computing. That's why breaking backwards-compatibility comes at a significant cost and is almost always avoided, even if the API of some methods is arguably lacking. This package provides drop-in wrappers "fixing" those.

Relatorio is a templating library which provides a way to easily output ODT, ODS, PNG, SVG and several other kinds of files. Support for more filetypes can be easily added by creating plugins for them.

This package provides fast fractions data type for rational numbers. It is the cythonized version of fractions.Fraction.

This package provides a fast and complete Python implementation of Markdown. It was written to closely match the behaviour of the original Perl-implemented Markdown.pl. It also comes with a number of extensions (called extras) for things like syntax coloring, tables, header-ids.

This package provides a Stream and Optional class.

Pyasn1-modules is a collection of Python modules providing ASN.1 types and implementations of ASN.1-based codecs and protocols.

This is an extended version of the Python built-in glob module which adds:

• The ability to capture the text matched by glob patterns, and return those matches alongside the file names.

• A recursive ** globbing syntax, akin for example to the globstar option of Bash.

• The ability to replace the file system functions used, in order to glob on virtual file systems.

• Compatible with Python 2 and Python 3 (tested with 3.3).

Glob2 currently based on the glob code from Python 3.3.1.