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        "description": "Representing Constructible Numbers in Python\n============================================\n\nBuild Status: |Build Status|\n\nThe constructible module provides exact representation of\n`constructible numbers`_ in Python.\n\nPython 2 and Python 3 are supported.\n\nThe constructible numbers are the smallest field containing the rational numbers, where the square root of\nany non-negative constructible number is constructible as well. The non-negative constructible numbers are\nthe lengths which can be constructed from the unit length using only a compass and a straightedge.\n\nUsage\n-----\n\nUsually the ``sqrt`` function is enough to work with constructible numbers::\n\n    >>> from constructible import sqrt\n    >>> x = sqrt(2) + sqrt(3)\n    >>> print(x)\n    ((0 + 1 * sqrt(2)) + (1 + 0 * sqrt(2)) * sqrt((3 + 0 * sqrt(2))))\n    >>> y = x*x\n    >>> print(y)\n    ((5 + 0 * sqrt(2)) + (0 + 2 * sqrt(2)) * sqrt((3 + 0 * sqrt(2))))\n    >>> z = y*y\n    >>> t = 10*y - z\n    >>> t == 1\n    True\n\nInstallation\n------------\n\nTo install from PYPI just type ::\n\n    pip install constructible\n\nThe library is a single pure python file, so it is also easy to install by hand.\n\nTesting\n-------\n\nThere are some tests using ``unittest``. Thanks to `Travis-CI`_ each push to github triggers a test:\n|Build Status|\n\nReleasing on PYPI\n------------------\n\nThe following steps are needed:\n\n-  Update the version in setup.py\n-  Tag the version in git::\n\n       git tag 0.1 -m \"Adds a tag so that we can put this on PyPI.\"\n       git push --tags origin\n       \n-  Test release with::\n\n       python setup.py register -r pypitest\n       python setup.py sdist upload -r pypitest\n\n-  Productive release with::\n\n     python setup.py register -r pypi\n     python setup.py sdist upload -r pypi\n\nChangelog\n---------\n\n-  2016-05-23 V0.1 Initial Release\n-  2016-09-30 V0.2 Fixing Issue 1 and added Tests\n-  2016-10-03 V0.3 Fixing Issue 2\n-  2016-10-23 V0.4 Added __hash__ and __float__, speed optimizations\n\nAknowledgements\n---------------\n\nThanks to `Anders Kaseorg`_ whose\n`implementation of constructible numbers in Haskell`_\nprovided inspiration and in particular the\n`algorithm for taking square roots`_\nin quadratic extension fields.\n\n.. _constructible numbers: http://en.wikipedia.org/wiki/Constructible_number\n.. _Travis-CI: https://travis-ci.org/\n.. _Anders Kaseorg: https://github.com/andersk\n.. _implementation of constructible numbers in Haskell: https://github.com/andersk/haskell-constructible\n.. _algorithm for taking square roots: https://github.com/leovt/constructible/wiki/Taking-Square-Roots-in-quadratic-extension-Fields\n\n.. |Build Status| image:: https://travis-ci.org/leovt/constructible.svg?branch=master\n   :target: https://travis-ci.org/leovt/constructible",
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