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PHYTON - 如何在此代码中创建一个功能来打印每个节点的层次?如何打印二叉树中每个节点的级别?
referrer=input()
location=input()
readFAQ=input()
pagesVisited=input()
serviceChosen=input()
testCase=[referrer, location, readFAQ, pagesVisited, serviceChosen]
t=buildtree(trainingData)
printtree(t)