Python numpy.npv()用法及代碼示例

numpy.npv(匯率，價值)：此財務函數可幫助用戶計算現金流量係列的NPV(淨現值)。

參數：

rate  : [scalar] Rate of discount 
value : [array_like, shape(M,)] value of 
        cash flows time series. The (fixed) time interval 
        between cash flow “events” must be the same as that
        for given rate is given. By convention, investments
        or “deposits” are -ve, income or “withdrawals” are +ve

返回：

present value as per given parameters.

求解方程：

代碼1：工作

## Python program explaining pv() function 
import numpy as np 
  
#            rate            values      
a =  np.npv(0.281,[-100, 19, 49, 58, 200]) 
print("Net Present Value(npv) : ", a)

輸出：

Net Present Value(npv) :  46.5579792365

參考文獻：
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.npv.html
。