Financial functions

Simple financial functions

fv(rate, nper, pmt, pv[, when]) Compute the future value.
pv(rate, nper, pmt[, fv, when]) Compute the present value.
npv(rate, values) Returns the NPV (Net Present Value) of a cash flow series.
pmt(rate, nper, pv[, fv, when]) Compute the payment against loan principal plus interest.
ppmt(rate, per, nper, pv[, fv, when]) Compute the payment against loan principal.
ipmt(rate, per, nper, pv[, fv, when]) Compute the interest portion of a payment.
irr(values) Return the Internal Rate of Return (IRR).
mirr(values, finance_rate, reinvest_rate) Modified internal rate of return.
nper(rate, pmt, pv[, fv, when]) Compute the number of periodic payments.
rate(nper, pmt, pv, fv[, when, guess, tol, ...]) Compute the rate of interest per period.

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https://docs.scipy.org/doc/numpy-1.13.0/reference/routines.financial.html