{"repo":"muCommons/NistChemPy","free":true,"listed":false,"github":"https://github.com/muCommons/NistChemPy","clone":"git clone https://github.com/muCommons/NistChemPy.git","description":"Unofficial Python tools for querying NIST Chemistry WebBook pages and extracting molecular-property records.","language":"Python","stars":57,"topics":["chemical-data","cheminformatics","chemistry","data-extraction","gas-chromatography","infrared-spectra","mass-spectra","molecular-properties","physical-chemistry","python"],"license":"MIT","category":"scrapers-browser-automation","readme_excerpt":"NistChemPy Unofficial Python tools for querying NIST Chemistry WebBook pages and extracting molecular-property records. [!WARNING] Old PyPI releases scheduled for removal. NistChemPy versions earlier than 2.0.0 may contain bundled WebBook-derived index data, including nist data.csv / nist data.zip . Starting with NistChemPy 2.0.0, the project follows a software-only distribution model and no longer redistributes prebuilt NIST Chemistry WebBook / SRD 69 indexes or bulk extracted WebBook-derived data. Affected old PyPI release files are scheduled to be removed on June 1, 2026 . Please migrate to nistchempy =2.0.0 and build/import local indexes using the documented local-index workflows. Project notice: NistChemPy is an unofficial Python package for querying NIST Chemistry WebBook pages and extracting selected molecular-property records. It is not affiliated with, maintained by, or endorsed by NIST. Because the Chemistry WebBook does not provide a stable public web API for this package, functionality may depend on the current structure and behavior of the external web service. Important index change: NistChemPy no longer ships a prebuilt NIST Chemistry WebBook compound index. Live WebBook search and individual compound-page parsing remain separate functionality, but local index search now requires a user-generated local index/cache. Rebuilding a full section-availability index can require visiting one WebBook page per compound. With a polite 3 second delay and roughly 100,000-15","default_branch":null,"files":null,"tree":[],"storefront":"/r/muCommons","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/muCommons/NistChemPy/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}