我需要?jiǎng)?chuàng)建一個(gè)嵌套的 dict 結(jié)構(gòu)，其中子級(jí)的數(shù)量可以在每個(gè)級(jí)別有所不同。將“大小”元素附加到旭日形圖的最后一個(gè) json 子元素 這個(gè)問(wèn)題涵蓋了樹(shù)的創(chuàng)建，除了我需要從最后一列中選取大小。鑒于我的標(biāo)簽在級(jí)別之間重復(fù)，并且每個(gè)級(jí)別都可以具有與終端級(jí)別相同的標(biāo)簽“abc”，以及下一級(jí)的父級(jí) - 我在這里稍微修改了代碼（以避免在子分支中重復(fù)）。但是，我無(wú)法指定存儲(chǔ)在最后一列中的大小，并且應(yīng)該替換每個(gè)葉端的 1。我知道我需要將行中的值傳遞給遞歸循環(huán) build_leaf，但似乎無(wú)法弄清楚如何。import csvfrom collections import defaultdictimport jsondef ctree():    return defaultdict(ctree)def build_leaf(name, leaf):            if len(name)==0:        res={"name":"last node"}        res['size']=1    else:        res = {"name": name}        # add children node if the leaf actually has any children        if len(leaf.keys())>0:            res["children"] = [build_leaf(k, v) for k, v in leaf.items()]        else:            res['size'] = 1    return resdef main():    tree = ctree()    # NOTE: you need to have test.csv file as neighbor to this file    with open('./inpfile.csv') as csvfile:        reader = csv.reader(csvfile)        header = next(reader)  # read the header row                i=0        for row in reader:            # usage of python magic to construct dynamic tree structure and            # basically grouping csv values under their parents            leaf = tree[row[0]]            size=row[-1]            for value in row[1:-1]:                leaf = leaf[value]    # building a custom tree structure    res = []    for name, leaf in tree.items():        res.append(build_leaf(name, leaf))    # printing results into the terminal    print(json.dumps(res, indent=2))    with open('paths.json', 'w') as fp:        json.dump(res, fp)main()所提及數(shù)據(jù)的最終輸出應(yīng)類似于：[  {    "name": "A1",    "children": [      {        "name": "A2",        "children": [          {            "name": "A1",            "children": [              {                "name": "A2",                "children": [                  {                    "name": "A3",                    "size": 80                  }                ]              }            ]          },