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        "author": "David M. Straub",
        "author_email": "david.straub@tum.de",
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        "description": "[![Build Status](https://travis-ci.org/DavidMStraub/parton.svg?branch=master)](https://travis-ci.org/DavidMStraub/parton) [![Coverage Status](https://coveralls.io/repos/github/DavidMStraub/parton/badge.svg?branch=master)](https://coveralls.io/github/DavidMStraub/parton?branch=master)\n\n# parton – a Python package for parton densities and parton luminosities\n\nparton is a Python package providing parton density functions and parton luminosities. It uses the PDF data files provided by the [LHAPDF](https://lhapdf.hepforge.org/) project. Its API is  partially compatible to LHAPDF's Python API, even though only a subset of its features are implemented.\n\nparton is written in pure Python, i.e. it runs on Linux, Mac OS, and Windows.\n\n## Installation\n\nTo install the package without administrator privileges, run\n```\npython3 -m pip install parton --user\n```\n\n## Command-line interface\n\nparton provides a command-line interface that mimicks (and is partially compatible to) LHAPDF's `lhapdf` command. In particular, it can be used to install PDF grid files. It is accessed by running the package as a script,\n```\npython3 -m parton\n```\nFor instance, to install a specific PDF set, run\n```\npython3 -m parton update\npython3 -m parton install 'CT10/0'\n```\nIf you already have a directory with PDF sets (e.g. from LHAPDF), that can be used as well.\n\n## Python usage\n\nThe API for numerically evaluating PDFs is modeled after LHAPDF's Python API:\n```python\nfrom parton import mkPDF\npdf = mkPDF('CT10', 0)\n# up quark PDF at x=0.1, Q=1000 GeV\npdf.xfxQ(1, 0.1, 1000)\n```\nIf the PDF sets are in a non-default location (on Linux, the default location is `~/.local/share/parton/`), this directory can be changed through `mkPDF`'s `pdfdir` argument.\n\nParton luminosities are accessed similarly through the `PLumi` class, but the factorization scale has to be fixed on instantiation,\n```python\nfrom parton import PLumi\n# pdf has been defined above\nplumi = PLumi(pdf, Q2=1000)\n# u-ubar parton luminosity shat/s=0.1\nplumi.L(1, -1, 0.1)\n```\n\n## License\n\nparton is released under the MIT license.\n\n## Author\n\nparton was written by David M. Straub.\n\n## Citation info\n\nparton cannot be cited at present. Please do not forget to also acknowledge the [LHAPDF](https://lhapdf.hepforge.org/) project.",
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