Newbie trying to nest instrumentation queries in array

Hi, gang, This is my second week of Python - I'm trying. I want to test a phono preamp stage at various frequencies, so I have an array named test_param where each row has 4 elements: the frequency for the signal generator, the time scale and input sensitivity for the oscilloscope, and a delay to account for 256 samples for an average reading. That runs fine. Now I want to read the 'scope while the array is running. I tried indenting my read block, that doesn't work. Is it possible to 'nest' ...