numpy.rate()
numpy.rate
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numpy.rate(nper, pmt, pv, fv, when='end', guess=0.1, tol=1e-06, maxiter=100)[source] -
Compute the rate of interest per period.
Parameters: nper : array_like
Number of compounding periods
pmt : array_like
Payment
pv : array_like
Present value
fv : array_like
Future value
when : {{‘begin’, 1}, {‘end’, 0}}, {string, int}, optional