关于python中将多个数据生成一个嵌套字典

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data = {"nodeDataArray": [
    {"category": "Start", "text": "start", "key": -1},
    {"category": "Logic", "text": "and", "key": -2},
    {"category": "Logic", "text": "and", "key": -3},
    {"category": "Operator", "text": "==", "key": -4},
    {"category": "Operator", "text": "==", "key": -5},
    {"category": "Logic", "text": "and", "key": -6},
    {"category": "Operator", "text": ">=", "key": -7},
    {"category": "Operator", "text": "<=", "key": -8},
    {"category": "Variable", "text": "age", "key": -9},
    {"category": "Variable", "text": "age", "key": -10},
    {"category": "Constant", "text": "18", "key": -11},
    {"category": "Constant", "text": "50", "key": -12},
    {"category": "Variable", "text": "salary", "key": -13},
    {"category": "Constant", "text": "5000", "key": -14},
    {"category": "Variable", "text": "rent", "key": -15},
    {"category": "Constant", "text": "1000", "key": -16}
],
    "linkDataArray": [
        {"from": -1, "to": -2},
        {"from": -2, "to": -3},
        {"from": -2, "to": -4},
        {"from": -3, "to": -6},
        {"from": -3, "to": -5},
        {"from": -6, "to": -7},
        {"from": -6, "to": -8},
        {"from": -7, "to": -9},
        {"from": -7, "to": -11},
        {"from": -8, "to": -10},
        {"from": -8, "to": -12},
        {"from": -5, "to": -13},
        {"from": -5, "to": -14},
        {"from": -4, "to": -15},
        {"from": -4, "to": -16}
    ]}

将上面数据转换成下面这种样子
上面数据中key表示当前节点，from为to的前面一个节点。上面的key和下面的to是对应的

{'and': [{'and': [{'and': [{'>=': [{'var': 'age'}, 18]}, {'<=': [{'var': 'age'}, 50]}]}, {'==': [{'var': 'salary'}, 5000]}]},{'==': [{'var': 'rent'}, 1000]}]}

你题目的解答代码如下：（如有帮助，望采纳！谢谢! 点击我这个回答右上方的【采纳】按钮）

data = {"nodeDataArray": [
    {"category": "Start", "text": "start", "key": -1},
    {"category": "Logic", "text": "and", "key": -2},
    {"category": "Logic", "text": "and", "key": -3},
    {"category": "Operator", "text": "==", "key": -4},
    {"category": "Operator", "text": "==", "key": -5},
    {"category": "Logic", "text": "and", "key": -6},
    {"category": "Operator", "text": ">=", "key": -7},
    {"category": "Operator", "text": "<=", "key": -8},
    {"category": "Variable", "text": "age", "key": -9},
    {"category": "Variable", "text": "age", "key": -10},
    {"category": "Constant", "text": "18", "key": -11},
    {"category": "Constant", "text": "50", "key": -12},
    {"category": "Variable", "text": "salary", "key": -13},
    {"category": "Constant", "text": "5000", "key": -14},
    {"category": "Variable", "text": "rent", "key": -15},
    {"category": "Constant", "text": "1000", "key": -16}
],
    "linkDataArray": [
        {"from": -1, "to": -2},
        {"from": -2, "to": -3},
        {"from": -2, "to": -4},
        {"from": -3, "to": -6},
        {"from": -3, "to": -5},
        {"from": -6, "to": -7},
        {"from": -6, "to": -8},
        {"from": -7, "to": -9},
        {"from": -7, "to": -11},
        {"from": -8, "to": -10},
        {"from": -8, "to": -12},
        {"from": -5, "to": -13},
        {"from": -5, "to": -14},
        {"from": -4, "to": -15},
        {"from": -4, "to": -16}
    ]}


dicdata = {x["key"]:x for x in data["nodeDataArray"]}

def jnp(s):
    if dicdata[s]["category"] == "Variable":
        return {'var': dicdata[s]["text"]}
    elif dicdata[s]["category"] == "Constant":
        return int(dicdata[s]["text"])
    else:
        li = [x["to"] for x in data["linkDataArray"] if x["from"]==s]
        tli = []
        for v in li:
            tli.append(jnp(v))
        dic = {dicdata[s]["text"]: tli}
        return dic

start = list(filter(lambda x: x["category"]=="Start", data["nodeDataArray"]))[0]["key"]
res = jnp(start)
print(res)

结果：

{'start': [{'and': [{'and': [{'and': [{'>=': [{'var': 'age'}, 18]}, {'<=': [{'var': 'age'}, 50]}]}, {'==': [{'var': 'salary'}, 5000]}]}, {'==': [{'var': 'rent'}, 1000]}]}]}