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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def finalizeSection(section):
 """ Correct the nxt and parent for each child """

    cur = section.first_child
    last = section.last_child
    if last is not None:
        last.nxt = None

    while cur is not None:
        cur.parent = section
        cur = cur.nxt