python 中的 numpy.nper()
numpy.pmt(rate, pmt, pv, fv, when = ‘end’) : 该金融功能帮助用户计算定期付款次数。
参数: 利率:【标量或(M，数组)】每期十进制(非百分比)利率 pmt : 【标量或(M，数组)】支付值 fv : 【标量或(M，数组)】未来值 pv : 【标量或(M，数组)】现值 当:期初(当默认值为{'end '，0}。
退货:定期付款次数。
正在求解的方程:
Fv+PV (1 +费率)nper + pmt(1 +费率当)/费率(1+费率)* * nper–1)= 0
或者当速率== 0 时T2【Fv+PV+PMT * nper = = 0
代码:
# Python program explaining
# pmt() function
import numpy as np
'''
Question :
how much time would it take to pay-off a loan of
$10, 000 at 10 % annual rate of interest, if we had
$100 to pay each month ?
'''
# rate pmt pv
Solution = np.nper(0.1 / 12, -100, 10000)
# Here fv = 0 ; Also Default value of fv = 0
print("Solution - No. of periods : % f months" %(Solution))
输出:
Solution - No. of periods : 215.905777 months
