decision_tree_manual_classifier.py 文件源码

def printtree(tree, indent=''):
    # Is this a leaf node?
    if tree.results != None:
        print str(tree.results)
    else:
        # Print the criteria
        print str(tree.col) + ':' + str(tree.value) + '? '

        # Print the branches
        print indent + 'T->',
        printtree(tree.tb, indent + '  ')
        print indent + 'F->',
        printtree(tree.fb, indent + '  ')