How to convert input stdin to list data structure in python

Question

I have a stdin data in this format:
100
85 92
292 42
88 33
500
350 36
800 45
0

I want something like this [[100, [85, 92], [292, 42], [88, 33]], [500, [350, 36], [800, 45], [0]]

Answer 1

Something like the following (I have tested) should do it:

lst = []
sublst = []
for line in sys.stdin:
    lineLst = [int(x) for x in line.split()]
    if len(lineLst) == 1:
        if sublst: lst.append(sublst)
        sublst = lineLst
    else:
        sublst.append(lineLst)
    
if sublst[0] == 0: lst.append(sublst)