在控制台窗口中以横向树格式打印漂亮的输出

Question

我有一个使用Python创建的字典.

d = {'a': ['Adam', 'Book', 4], 'b': ['Bill', 'TV', 6, 'Jill', 'Sports', 1, 'Bill', 'Computer', 5], 'c': ['Bill', 'Sports', 3], 'd': ['Quin', 'Computer', 3, 'Adam', 'Computer', 3], 'e': ['Quin', 'TV', 2, 'Quin', 'Book', 5], 'f': ['Adam', 'Computer', 7]}

我想以横向树格式而不是在控制台上打印出来.我已经尝试过漂亮的印刷品但是当字典变长时,它变得难以阅读.

例如,使用此字典,它将返回:

a -> Book -> Adam -> 4
b -> TV -> Bill -> 6
  -> Sports -> Jill -> 1
  -> Computer -> Bill -> 5
c -> Sports -> Bill -> 3
d -> Computer -> Quin -> 3
              -> Adam -> 3
e -> TV -> Quin -> 2
    Book -> Quin -> 5
f -> Computer -> Adam -> 7

基本上,漂亮的打印由活动组织,或列表中第二个位置的项目,然后是名称,然后是数字.

上面的示例输出只是一个示例.我尝试使用Pretty打印树,但无法弄清楚如何将其转换为侧面格式.

Answer 1

您可以查看ETE工具包的代码.即使使用内部节点标签,函数_asciiArt也能生成很好的树形表示

from ete2 import Tree
t = Tree("(((A,B), C), D);")
print t

#               /-A
#          /---|
#     /---|     \-B
#    |    |
#----|     \-C
#    |
#     \-D

Answer 2

def treePrint(tree):
    for key in tree:
        print key, # comma prevents a newline character
        treeElem = tree[key] # multiple lookups is expensive, even amortized O(1)!
        for subElem in treeElem:
            print " -> ", subElem,
            if type(subElem) != str: # OP wants indenting after digits
                print "\n " # newline and a space to match indenting
        print "" # forces a newline