本文摘自“机器学习实战”,感兴趣者可自行查看! 获取决策树的叶节点 现有决策树如下: mytree={'no surfing': {0: 'no', 1: {'flippers': {0: 'no', 1: 'yes'}}}} #获取决策树的叶节点数目 def getNumLeaf(myTree): numLeaf=0 firstStr=list(myTree.keys())[0] secondTree