JSON数据-在Python中如何仅在键=可用的情况下打印结果

Tmc家族

首先，这是我的第一篇文章，并且我是一个菜鸟，尝试学习一些Python，因为我想查看＃可用的露营地，并且希望编写自己的程序，然后使用一些付费网站。下面是我的代码＃，它打印以下显示的结果。我只想打印“可用性”：如果显示“可用”而不是“保留”。

谢谢高级

import json
import urllib.request
import time
    
# download raw json object
url = "https://www.recreation.gov/api/camps/availability/campground/233116/month?start_date=2020-09-01T00%3A00%3A00.000Z"
data = urllib.request.urlopen(url).read().decode()
    
# parse json object
obj = json.loads(data)

print(json.dumps(obj, indent=1))




{
 "campsites": {
  "90041": {
   "availabilities": {
    "2020-09-01T00:00:00Z": "Reserved",
    "2020-09-02T00:00:00Z": "Reserved",
    "2020-09-03T00:00:00Z": "Reserved",
    "2020-09-04T00:00:00Z": "Reserved",
    "2020-09-05T00:00:00Z": "Reserved",
    "2020-09-06T00:00:00Z": "Reserved",
    "2020-09-07T00:00:00Z": "Reserved",
    "2020-09-08T00:00:00Z": "Reserved",
    "2020-09-09T00:00:00Z": "Reserved",
    "2020-09-10T00:00:00Z": "Reserved",
    "2020-09-11T00:00:00Z": "Reserved",
    "2020-09-12T00:00:00Z": "Reserved",
    "2020-09-13T00:00:00Z": "Reserved",
    "2020-09-14T00:00:00Z": "Reserved",
    "2020-09-15T00:00:00Z": "Reserved",
    "2020-09-16T00:00:00Z": "Reserved",
    "2020-09-17T00:00:00Z": "Reserved",
    "2020-09-18T00:00:00Z": "Reserved",
    "2020-09-19T00:00:00Z": "Reserved",
    "2020-09-20T00:00:00Z": "Reserved",
    "2020-09-21T00:00:00Z": "Reserved",
    "2020-09-22T00:00:00Z": "Reserved",
    "2020-09-23T00:00:00Z": "Reserved",
    "2020-09-24T00:00:00Z": "Reserved",
    "2020-09-25T00:00:00Z": "Reserved",
    "2020-09-26T00:00:00Z": "Reserved",
    "2020-09-27T00:00:00Z": "Reserved",
    "2020-09-28T00:00:00Z": "Reserved",
    "2020-09-29T00:00:00Z": "Reserved",
    "2020-09-30T00:00:00Z": "Reserved"
   },
   "campsite_id": "90041",
   "campsite_reserve_type": "Site-Specific",
   "campsite_type": "STANDARD NONELECTRIC",
   "capacity_rating": "",
   "loop": "KIRK CREEK CAMPGROUND",
   "max_num_people": 8,
   "min_num_people": 1,
   "quantities": null,
   "site": "030",
   "type_of_use": "Overnight"
  },

大肠菌群

您在这里有几种可能。我认为一个简单的解决方案是obj通过简单地删除not的条目来对数据进行处理"Available"。这是一个为您提供相同数据，仅过滤可用性的解决方案：

from copy import deepcopy
result = deepcopy(obj)

for campsite, info in obj["campsites"].items():
    for day, availability in info["availabilities"].items():
        if availability != "Available":
            del result["campsites"][campsite]["availabilities"][day]

print(json.dumps(result, indent=1))

如果您需要其他数据结构，我希望您有所了解。

迭代对象时进行修改可能会导致一些麻烦。这就是为什么我为您创建了一个深拷贝（没有引用）的原因obj。当然，您必须转储result而不是obj。

对于您给定的数据，我再也找不到可用的日期。

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