如何在没有外部递归函数的情况下解析多个嵌套的JSON键？

如何解决如何在没有外部递归函数的情况下解析多个嵌套的JSON键？

我正在研究Discord Bot，它可以解析API，格式化并返回数据。 我需要解析嵌套的键，尤其是“当前”，“今天”，“ day30”，“ day90”和“ day180”键，并且找不到直接的方法。 这是JSON数据：

{
  "item": {
    "icon": "url_removed_for_obscurity","icon_large": "url_removed_for_obscurity","id": 859,"type": "Default","typeIcon": "url_removed_for_obscurity","name": "Example Item","description": "Example Item Description","current": {
      "trend": "neutral","price": "1,210"
    },"today": {
      "trend": "negative","price": "- 16"
    },"members": "true","day30": {
      "trend": "negative","change": "-4.0%"
    },"day90": {
      "trend": "negative","change": "-8.0%"
    },"day180": {
      "trend": "negative","change": "-3.0%"
    }
  }
}

这可以按预期工作：

item_desc = '';
current_vals = ''; todays_vals = ''; day30_vals = ''; day90_vals = ''; day180_vals = ''
current_trend = ''; todays_trend = ''; day30_trend = ''; day90_trend = ''; day180_trend = '';

get_item_data = requests.get(item_endpoint).json()

for key,val in get_item_data.items():
        if(query_id == str(val['id'])):
            #print('[Debug] Found Item Through API...')
            if('description' in val):
                item_desc = str(val['description'])
                await context.send(item_desc)
            if('current' in val):
                current_vals = str(val['current'])
                await context.send(current_vals)
            if('today' in val):
                todays_vals = str(val['today'])
                await context.send(todays_vals)
            if('day30' in val):
                day30_vals = str(val['day30'])
                await context.send(day30_vals)
            if('day90' in val):
                day90_vals = str(val['day90'])
                await context.send(day90_vals)
            if('day180' in val):
                day180_vals = str(val['day180'])
                await context.send(day180_vals)
            break

输出：

Example Item Description
{'trend': 'neutral','price': '1,210'}
{'trend': 'negative','price': '- 16'}
{'trend': 'negative','change': '-4.0%'}
{'trend': 'negative','change': '-8.0%'}
{'trend': 'negative','change': '-3.0%'}

我知道我需要做类似的事情：

current_trend = ''; todays_trend = ''; day30_trend = ''; day90_trend = ''; day180_trend = '';
            if('current' in val):
                current_vals = str(val['current'])
                parse_current_vals = json.loads(current_vals)
                if('trend' in parse_current_vals.items()):
                    current_trend = str(parse_current_vals['trend'])
                    await context.send(current_trend)
etc

我希望它简单地返回

negative

neutral

或

positive

它目前不返回任何内容，因为我显然没有正确解析。 我尝试了上述方法的许多不同变体，但均无济于事。最近几个小时的谷歌搜索和审判/错误使我在这里寻求建议。任何和所有输入都是值得欢迎和赞赏的。

解决方法

类似

 data = {
  "item": {
    "icon": "url_removed_for_obscurity","icon_large": "url_removed_for_obscurity","id": 859,"type": "Default","typeIcon": "url_removed_for_obscurity","name": "Example Item","description": "Example Item Description","current": {
      "trend": "neutral","price": "1210"
    },"today": {
      "trend": "negative","price": "-16"
    },"members": "true","day30": {
      "trend": "negative","change": "-4.0%"
    },"day90": {
      "trend": "negative","change": "-8.0%"
    },"day180": {
      "trend": "negative","change": "-3.0%"
    }
  }
}
def as_float(val):
    value = val.strip()
    if value.endswith('%'):
        value = value[:-1]
    value = value.replace(',','')
    return float(value)
collected_trends = []
interesting_keys = {'day30','today','current'}
for key in interesting_keys:
    entry = data['item'][key]
    num = entry['change'] if 'change' in entry else entry['price']
    collected_trends.append([entry['trend'],as_float(num)])
print(collected_trends)

输出

[['neutral',1210.0],['negative',-4.0],-16.0]]