努比。fv(比率、净现值、pmt、fv、时间=‘结束’): 此财务功能帮助用户计算未来价值。
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参数:
费率: [array_-like]每段时间的小数利率(非百分比) nper: [array_like]总复利周期 pmt: [array_like]固定支付 fv: [类似数组,可选]未来值。默认值=0.0 什么时候: 在每个周期的开始(当={‘begin’,1})或结束(当={‘end’,0})时。默认值为{end’,0}
返回:
present value as per given parameters.
正在求解的方程:
fv + pv*(1 + rate)**nper + pmt*(1 + rate*when)/rate*((1 + rate)**nper - 1) = 0
或 当速率==0时
fv + pv + pmt * nper = 0
代码1:工作
## Python program explaining pv() function import numpy as np ''' Question : What is the present value (e.g., the initial investment) of an investment that needs to total $15692.93 after 10 years of saving $100 every month? Assume the interest rate is 5% (annually) compounded monthly. ''' # rate np pmt fv Solution = np.pv( 0.05 / 12 , 10 * 12 , - 100 , 15692.93 ) print ( "present value (fv) : " , Solution) |
输出:
present value (fv) : -100.000671316
参考: https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.pv.html
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