The program is an illustration of loops; Loops are program statements used for repetition of operations
The complete question is added as an attachment
The code written in Python that completes the missing parameters in the question are:
def nested_sum(mylist):
total = 0
for other_list in mylist:
total += sum(other_list)
print(total)
t = [[1,2],[3],[4,5,6]]
nested_sum(t)
nested_sum( eval(input()))
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