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    "info": {
        "author": "Odin Kroeger",
        "author_email": "xacuml@maskr.me",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 4 - Beta",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
            "Natural Language :: English",
            "Operating System :: OS Independent",
            "Programming Language :: Python :: 3"
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        "description": "===============\nsortableclasses\n===============\n\nMakes classes sortable by precedence and priority. The order of precedence\nof classes and their priority is defined per class and at runtime.\n\nCopyright 2016, 2017, 2018, 2019 Odin Kroeger\n\n\n\nUse case\n========\n\n*sortableclasses* makes classes sortable by precedence and priority. This is\nuseful if you want to take some input, apply a set of transformations, and\noutput the result (i.e., if you're writing what on UNIX-ish systems is called\na 'filter'). Ordinarily, you would chain those transformations as function\ncalls (i.e., ``return transform_1(...(transform_n(input)))``), but the larger\nthe number of transformation grows, the more difficult this is to maintain.\n\n*sortableclasses* enables you to define each of those transformations as a\nclass, assign each of them a list of predecessor and successor classes or a\nnumerical priority, and then simply sort them using ``sort`` or ``sorted``.\nSimply put, it enables you to write classes that are similar to plugins\nin how they function.\n\nFor example::\n\n    >>> import sortableclasses\n    >>> import abc\n    >>> import functools\n    >>>\n    >>> class Transform(sortableclasses.Pluggable):\n    ...     @staticmethod\n    ...     @abc.abstractmethod\n    ...     def transform(input):\n    ...         pass\n    ...\n    >>> class MakeContent(Transform):\n    ...     @staticmethod\n    ...     def transform(input):\n    ...         if input == ':-(':\n    ...             return ':-|'\n    ...         return input\n    ...\n    >>> class MakeHappy(Transform):\n    ...     successorof = (MakeContent,)\n    ...     @staticmethod\n    ...     def transform(input):\n    ...         if input == ':-|':\n    ...             return ':-)'\n    ...         return input\n    ...\n    >>> class MakeVeryHappy(Transform):\n    ...     successorof = (MakeHappy,)\n    ...     @staticmethod\n    ...     def transform(input):\n    ...         if input == ':-)':\n    ...             return ':-D'\n    ...         return input\n    ...\n    >>> transforms = sorted(Transform.getderived())\n    >>> transforms\n    [<class 'MakeContent'>, <class 'MakeHappy'>, <class 'MakeVeryHappy'>]\n    >>> input = ':-('\n    >>> functools.reduce(lambda k, s: s.transform(k), transforms, input)\n    ':-D'\n\n\nInstallation\n============\n\nYou use *sortableclasses* **at your own risk.**\nYou have been warned.\n\n*sortableclasses* requires Python 3.\n\nIf you have Python's `setuptools <https://pypi.org/project/setuptools/>`_,\nsimply say::\n\n    pip3 install sortableclasses\n\nOtherwise, download the most recent stable release (`v0.9.4\n<https://github.com/odkr/sortableclasses.py/archive/v0.9.4.tar.gz>`_),\nunzip it and copy the directory `sortableclasses` into a directory in\nyour Python's `sys.path`.\n\nYou can do all of the above by::\n\n    # Download and unpack *sortableclasses* to the current directory.\n    curl -f https://codeload.github.com/odkr/sortableclasses.py/tar.gz/v0.9.4 | \n        tar -xz\n    # The command below guesses a directory to install *sortableclasses* to.\n    PYPATH=$(python3 -c 'import sys; print(\"\\n\".join(sys.path))' | \n        grep -v '.zip' | grep -E \"(${HOME?}|/local/)\" | head -n1)\n    # If the command below errors, no suitable directory was found.\n    # Otherwise, it will show you where *sortableclasses* will be installed to.\n    echo \"${PYPATH:?'Did not find a suitable directory.'}\" >&2\n    # Copy the directory \"sortableclasses\" into that directory.\n    [ -d \"${PYPATH:?}\" ] && {\n        PACKAGE=sortableclasses.py-0.9.4/sortableclasses\n        cp -r \"$PACKAGE\" \"$PYPATH\" || sudo cp -r \"$PACKAGE\" \"$PYPATH\"    \n    }\n    # Remove the downloaded files, if you want to.\n    rm -rf sortableclasses.py-0.9.4\n\n\nDocumentation\n=============\n\nYou can view the reference documentation at `Read the Docs\n<https://sortableclassespy.readthedocs.io/en/latest/>`_ or,\nonce you installed *sortableclasses*, by::\n\n    pydoc sortableclasses\n\n\nContact\n=======\n\nIf there's something wrong with *sortableclasses*, please `open an issue\n<https://github.com/odkr/sortableclasses.py/issues>`_.\n\n\nLicence\n=======\n\nThis programme is free software: you can redistribute it and/or modify\nit under the terms of the GNU General Public License as published by\nthe Free Software Foundation, either version 3 of the License, or\n(at your option) any later version.\n\nThis programme is distributed in the hope that it will be useful,\nbut WITHOUT ANY WARRANTY; without even the implied warranty of\nMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\nGNU General Public License for more details.\n\nYou should have received a copy of the GNU General Public License\nalong with this program.  If not, see <http://www.gnu.org/licenses/>.\n\n\nFurther Information\n===================\n\nGitHub:\n    <https://github.com/odkr/sortableclasses.py>\n\nRead the docs:\n    <https://sortableclassespy.readthedocs.io/en/latest/>\n\n\n",
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        "keywords": "plugin",
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        "name": "sortableclasses",
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        "summary": "Retrieve all classes derived from a class and sort them by a given priority and order, making it easy to draw up and use plugin-like classes.",
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