Packages
healpy wraps the HEALPix C++ library to handle pixelated data on the sphere, enabling coordinate conversions, map transformations, spherical harmonics analysis, and visualization of all-sky survey data.
HeapDict is a mutable mapping that acts as a priority queue, supporting efficient priority updates on existing keys—a capability the standard library's heapq module lacks.
However, verify it works on your target Python version and consider whether an actively maintained alternative better suits your long-term needs.
Hegel-core provides property-based testing data generation and shrinking built on Hypothesis, implementing a universal testing protocol for discovering edge cases through randomized input generation.
No, not for new projects.
Helion is a Python-embedded domain-specific language for writing machine learning kernels that compile to Triton, with built-in autotuning to optimize GPU kernel performance.
However, the unclear license classification and 10-minute autotuning overhead on first run are real constraints—verify license compatibility for your use case and…
A minimal package with no runtime dependencies, apparently intended as a simple demonstration or test artifact rather than a functional tool.
A Python wrapper for the HelloSign API that lets you send signature requests, manage accounts, and embed signing workflows into your application.
Install only if you are already committed to HelloSign and need a Python client for an existing integration.
hepconvert converts between columnar file formats—currently ROOT and Parquet, with HDF5 planned—replacing multi-step conversion workflows with single-line Python calls or CLI commands, with built-in support for large datasets and compression control.
Provides units and physical constants in the HEP (High Energy Physics) system of units, derived from CLHEP, for use in particle physics calculations and simulations.
Hera is a Python SDK that turns Python functions into Argo Workflows templates and submits them to Kubernetes clusters, enabling orchestration of containerized workloads without leaving Python.
Install it if you need to orchestrate containerized workloads on Kubernetes and prefer writing Python over YAML.
Hera is a Python SDK that turns Python functions into Argo Workflows templates and submits them to a Kubernetes cluster, letting you define containerized workflow orchestration in pure Python.
Install only if you already operate Argo Workflows; it is not a standalone orchestration tool.
Herbie downloads numerical weather prediction model data (GRIB2 files) from NOAA, ECMWF, and other sources, then loads it into xarray for analysis and visualization.
Python wrapper for the Heroku API V3 that lets you manage Heroku applications, addons, dynos, and account settings programmatically.
However, verify that the Heroku API V3 endpoints you need are still current and that the package's Python version support matches your environment, since classifiers…
Converts binary data to hexadecimal text representation and restores binary from hex dumps, available as both a library and command-line tool.
Applies colored text and background styling to CLI output using hex or RGB color formats, then prints or returns the formatted string.
Loads, edits, and saves hexadecimal record files (Intel HEX and Motorola S-record formats) commonly used in embedded systems to represent binary data for non-volatile memory.
A command-line interface for interacting with the Hugging Face Hub—downloading models, managing authentication, and accessing hub resources without writing Python code.
Builds and previews documentation for Hugging Face repositories, converting markdown and notebooks into MDX and HTML with support for multilingual docs and GitHub Actions integration.
A CLI tool for discovering endpoints and sending predictions to Gradio apps hosted on Hugging Face Spaces, with built-in support for file uploads and private spaces.
However, the project is very new (first release in March 2026) with minimal community adoption (3 GitHub stars), so expect possible API changes and limited…
Accelerates file transfers to and from the Hugging Face Hub by using a compiled backend optimized for high-bandwidth networks, bypassing Python's speed limitations.
hf-xet provides chunk-based deduplication and efficient file transfer for the Hugging Face Hub, enabling faster uploads and downloads of large files with local disk caching.
Hickle serializes Python objects to HDF5 files as a pickle alternative, enabling cross-language data interchange and optional compression of numpy arrays and other data structures.
However, verify the license first—it is marked OSI-approved but the exact terms are not in the metadata.
Provides Python bindings to the hidapi library for communicating with USB human interface devices (keyboards, mice, joysticks, etc.) at a low level.
Provides a Python interface to HIDAPI, enabling communication with USB human interface devices across Linux, Windows, and macOS.
Provides a typed Python client for the HiddenLayer REST API, with both synchronous and asynchronous interfaces powered by httpx.
Loads configuration from YAML files organized by environment, automatically selecting the right file based on an ENVIRONMENT variable and merging settings hierarchically.
However, verify the license metadata before using in proprietary projects, and be aware that the last release was nearly a year ago—check whether the project's pace…
Reconciles hierarchical time-series forecasts across multiple levels of aggregation using statistical and probabilistic methods to ensure coherent predictions.
Generates interactive Highcharts data visualizations from Python, producing JavaScript code and static exports for web browsers and Jupyter environments.
However, clarify the licensing model—especially if you plan commercial use—before committing to a production deployment.
Highcharts Maps for Python wraps the Highcharts Maps JavaScript library to create interactive geospatial and map-based data visualizations directly from Python, with native integration into Jupyter, Pandas, PySpark, and GeoPandas workflows.
However, verify the license terms first (they are unclear in the metadata), and be aware that the package has not been updated in 724 days—test compatibility with…
Highdicom provides a high-level Python API for reading, writing, and manipulating DICOM medical image files, with particular focus on machine learning and computational analysis workflows.
Install it if you work with DICOM files in machine learning or computational analysis contexts.
Highspy is a Python wrapper around HiGHS, a high-performance solver for linear programming (LP), convex quadratic programming (QP), and mixed-integer programming (MIP) problems.
Install it if you need to solve LP, QP, or MIP problems in Python and want a self-contained, dependency-light solver.
Hightime provides drop-in replacements for Python's datetime and timedelta types that support precision down to yoctoseconds, enabling sub-microsecond time arithmetic and representation.
Install only if you actually need precision beyond microseconds; standard datetime is simpler and faster for typical applications.
Converts between Hijri (Islamic) and Gregorian calendar dates. This package is deprecated; the actively maintained successor is hijridate.
Converts dates between the Hijri (Islamic) and Gregorian calendars using the Umm al-Qura standard, with support for dates from 1343 AH to 1500 AH.
Install it if you need reliable Hijri-Gregorian conversion within the supported date range; the main constraint is the 1343–1500 AH window and the explicit…
Hikari is an async Discord bot framework for Python that provides type-safe bindings to Discord's REST and Gateway APIs, supporting both gateway-connected bots and REST-only interactions.
Hindsight-api-slim provides a persistent memory system for AI agents that stores facts, tracks entities and relationships, and enables temporal and semantic reasoning using PostgreSQL with pgvector.
A Python client library for interacting with Hindsight, a semantic memory system that uses personality-driven thinking to process and store information.
Provides low-level Python and Cython bindings for HIP, enabling direct access to AMD GPU compute capabilities from Python code.
hiredis wraps the C hiredis library to parse Redis protocol replies in Python, optimizing multi-bulk reply parsing for use with Redis clients.
Hishel is an HTTP caching library for Python that implements RFC 9111 specifications, providing RFC-compliant caching integration for popular HTTP clients like HTTPX, Requests, ASGI, and FastAPI with both synchronous and asynchronous support.
Install it if you need HTTP caching for HTTPX, Requests, FastAPI, or ASGI applications.
Hist provides a user-friendly interface for creating, filling, and analyzing histograms, built on top of boost-histogram with support for named axes, advanced indexing, and integrated plotting.