= Install =

From: https://docs.galpy.org/en/latest/installation.html

  brew install gsl

= Use =

calculator: https://www.omnicalculator.com/finance/black-scholes

From: https://pythoninoffice.com/calculate-black-scholes-option-price-in-python/

= swagger =

* https://developer.schwab.com/products/trader-api--individual