python - 在Python中解析具有层次结构的文件

Question

我正在尝试将工具的输出解析为数据结构，但我在做正确的事情时遇到了一些困难。该文件如下所示:

 Fruits
   Apple
     Auxiliary
     Core
     Extras
   Banana
     Something
   Coconut
 Vegetables
   Eggplant
   Rutabaga

您可以看到顶级项目缩进了一个空格，而其下的项目每一层都缩进了两个空格。这些项目也按字母顺序排列。

如何将文件转换为类似于 ["Fruits", "Fruits/Apple", "Fruits/Banana", ..., "Vegetables", "Vegetables/Eggplant", “蔬菜/芜菁甘蓝”]?

Answer 1

>>> with open("food.txt") as f:
...     res = []
...     s=[]
...     for line in f:
...         line=line.rstrip()
...         x=len(line)
...         line=line.lstrip()
...         indent = x-len(line)
...         s=s[:indent/2]+[line]
...         res.append("/".join(s))
...     print res
... 
['Fruits', 'Fruits/Apple', 'Fruits/Apple/Auxiliary', 'Fruits/Apple/Core', 'Fruits/Apple/Extras', 'Fruits/Banana', 'Fruits/Banana/Something', 'Fruits/Coconut', 'Vegetables', 'Vegetables/Eggplant', 'Vegetables/Rutabaga']