The documentation of vqe_run in the VQE class indicates that we should use the argument disp = True if we want the expectation and parameters to be printed at each iteration.
However, in line 123 of vqe.py:
self._disp_fun = disp if disp is not None else lambda x: None
So we actually have to use disp = print for it to work as intended.
The documentation of
vqe_runin the VQE class indicates that we should use the argumentdisp = Trueif we want the expectation and parameters to be printed at each iteration. However, in line 123 ofvqe.py:self._disp_fun = disp if disp is not None else lambda x: NoneSo we actually have to use
disp = printfor it to work as intended.