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# numpy.npv

`numpy.``npv`(rate, values)

  Returns the NPV (Net Present Value) of a cash flow series.

  Parameters: | rate : scalar The discount rate. values : array_like, shape(M, ) The values of the time series of cash flows. Must be the same increment as the rate.
  Returns: | out : float The NPV of the input cash flow series values at the discount rate.

  Notes

  Returns the result of:

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