Let's reverse—compute the present value with numbers from the previous tutorial.
Plug in the figures from the Time for action – determining future value tutorial to calculate the present value.
print "Present value", np.pv(0.03/4, 5 * 4, -10, 1376.09633204)
This gives us 1,000 as expected apart from a tiny numerical error. Actually, it is not an error but a representation issue. We are dealing here with outgoing cash flow, that is the reason for the negative value.
Present value -999.999999999