This is a simulation by LTspice for an impedance bridge, where the DUT is an inductor of 1uH and the frequency of the input signal is 7MHz.
We put the simulated waveform of V1 and V2 into a Python program.
We see that Z(DUT)=(0.00903879437834+44.0103397701j), and because X(DUT)=2.0*3.14*7MHz*1uH=43.96 [ohm], it seems that the program is working fine.