ls = ['one.two.three.four', 'one.six.seven.eight', 'five.nine.ten', 'twelve.zero']tree = {}for item in ls: t = tree for part in item.split('.'): t = t.setdefault(part, {})结果：
{ "twelve": { "zero": {} }, "five": { "nine": { "ten": {} } }, "one": { "six": { "seven": { "eight": {} } }, "two": { "three": { "four": {} } } }}
