Computer notation for Nemeth within UEB Contexts

In the 3 examples shown, there is displayed computer notation that will be transcribed with the necessary indentations as shown in print.

The Grade 1 passage indicator will precede the text.

Question: Is it necessary to switch to the Nemeth Code for items such as a = [1, 2, 3, 4, 5] and a[x] in Sample 1?

OR for  option_f = False and i = 1 in Sample 2?

OR for the matrix in Sample 3?

A = [[1, 4 ,5, 12],
     [-5, 8, 9, 0],
[-6, 7, 11, 19,]]

It seems that the Nemeth Switch indicators will be used extensively in Sample 3.

In sample 3 would we use the one word switch indicator for the word "print", I assume yes?

As a final question:

Since we have used the Grade I passage indicator in the beginning, does its effect extend through the inserted Nemeth portions, or do we have to terminate the grade 1 passage for the Nemeth sections?