How can I load a saved JSON tree with treelib?

I have made a Python script wherein I process a big html with BeautifulSoup while I build a tree from it using treelib: http://xiaming.me/treelib/. I have found that this library comes with methods to save the tree file on my system and also parsing it to JSON. But after I do this, how can I load it? It is not efficient to build the same entire tree for each run. I think I can make a function to parse the JSON tree previously written to a file but I just want to be sure if there exists another easy way or not.

Thanks in advance

Solution

The simple Answer

With this treelib, you can't.

As they say in their documentation (http://xiaming.me/treelib/pyapi.html#node-objects):

tree.save2file(filename[, nid[, level[, idhidden[, filter[, key[, reverse]]]]]]])
    Save the tree into file for offline analysis.

It does not contain any JSON-Parser, so it can not read the files.

What can you do?

You have no other option as building the tree each time for every run.

Implement a JSON-Reader that parses the file and creates the tree for you.

https://docs.python.org/2/library/json.html