numpy.npv(rate, value) : This financial function helps user to calculate the NPV(Net Present Value) of a cash flow series.
Parameters :
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
Return :
present value as per given parameters.
Equation being solved : 
Code 1 : Working
Python
## Python program explaining npv() functionimport numpy as np# rate values a = np.npv(0.281,[-100, 19, 49, 58, 200])print("Net Present Value(npv) : ", a) |
Output :
Net Present Value(npv) : 46.5579792365
References : https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.npv.html .
