This is a pre-production deployment of Warehouse, however changes made here WILL affect the production instance of PyPI.


Joined on Apr 3, 2015



Last released on Apr 3, 2015

Peter Jäckel's LetsBeRational is an extremely fast and accurate method for obtaining Black's implied volatility from option prices with as little as two iterations to maximum attainable precision on standard(64 bit floating point) hardware for all possible inputs.


Last released on May 17, 2016


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