我正在使用的数据可在此处找到 - JSON Information
我目前正在使用此代码读取数据，但结果对我来说很陌生，我不知道如何使用它：
import requests
site='http://www.bom.gov.au/fwo/IDN60801/IDN60801.95896.json'
r=requests.get(site)
print r.json()
这会输出一个庞大的字典？我不确定如何，但我希望能够从 JSON 网站检索到的是第一个＆＃34; air_temp ＆＃34;值。
我确信这并不难，我只是n00b。
感谢您的帮助！
以下是一些示例输出：
{
u'observations':{
u'header':[
{
u'state_time_zone':u'NSW',
u'time_zone':u'EDT',
u'main_ID':u'IDN60800',
u'product_name':u'Weather Observations',
u'state':u'New South Wales',
u'refresh_message': u'Issued at 6:02 pm EDT Monday 30 January 2017',
u'ID':u'IDN60801',
u'name':u'Albury'
}
],
u'notice':[
{
u'copyright_url': u'http://www.bom.gov.au/other/copyright.shtml',
u'disclaimer_url': u'http://www.bom.gov.au/other/disclaimer.shtml',
u'copyright':u'Copyright Commonwealth of Australia 2017,
Bureau of Meteorology. For more information see: http: //www.bom.gov.au/other/copyright.shtml http://www.bom.gov.au/other/disclaimer.shtml',
u'feedback_url': u'http://www.bom.gov.au/other/feedback'
}
],
u'data':[
{
u'swell_period':None,
u'wind_dir':u'SW',
u'lat':-36.1,
u'cloud_oktas':2,
u'gust_kt':16,
u'history_product':u'IDN60801',
u'local_date_time_full':u'20170130180000',
u'cloud':u'Mostly clear',
u'press_msl':1006.8,
u'cloud_type':u'-',
u'wind_spd_kmh':30,
u'lon':147.0,
u'swell_height':None,
u'wmo':95896,
u'press_qnh':1007.6,
u'weather':u'-',
u'wind_spd_kt':16,
u'rain_trace':u'-',
u'aifstime_utc':u'20170130070000',
u'delta_t':13.1,
u'press_tend':u'-',
u'rel_hum':24,
u'local_date_time': u'30/06:00 pm',
u'press':1006.8,
u'vis_km':u'47',
u'sea_state':u'-',
u'air_temp':32.2,
u'name':u'Albury',
u'cloud_base_m':2500,
u'cloud_type_id':None,
u'gust_kmh':30,
u'dewpt':9.1,
u'swell_dir_worded':u'-',
u'sort_order':0,
u'apparent_t':26.3
},
{
u'swell_period':None,
u'wind_dir':u'WSW',
u'lat':-36.1,
u'cloud_oktas':None,
u'gust_kt':25,
u'history_product':u'IDN60801',
u'local_date_time_full':u'20170130174300',
u'cloud':u'-',
u'press_msl':1006.7,
u'cloud_type':u'-',
u'wind_spd_kmh':28,
u'lon':147.0,
u'swell_height':None,
u'wmo':95896,
u'press_qnh':1007.5,
u'weather':u'-',
u'wind_spd_kt':15,
u'rain_trace':u'0.0',
u'aifstime_utc':u'20170130064300',
u'delta_t':13.4,
u'press_tend':u'-',
u'rel_hum':23,
u'local_date_time': u'30/05:43 pm',
u'press':1006.7,
u'vis_km':u'10',
u'sea_state':u'-',
u'air_temp':32.4,
u'name':u'Albury',
u'cloud_base_m':None,
u'cloud_type_id':None,
u'gust_kmh':46,
u'dewpt':8.6,
u'swell_dir_worded':u'-',
u'sort_order':1,
u'apparent_t':26.8
},
答案 0 :(得分：3)
看一下python dictionary docs。
提取所有温度：
>>> r=requests.get(site)
>>> data = r.json()
>>> allTemps = [item['air_temp'] for item in data['observations']['data']]
>>> print(allTemps)
[32.2, 32.4, 33.0, 36.6, 40.7, 41.2, 40.8, 39.8, 39.6, 40.6, 40.9, 40.4, 41.1, 40.5, 40.4, 41.2, 39.6, 40.6, 39.1, 39.1, 38.6, 38.6, 33.6, 31.5, 29.1, 26.6, 25.7, 23.5, 22.4, 20.2, 19.8, 17.2, 17.2, 17.3, 17.7, 18.1, 18.4, 18.8, 18.9, 20.2, 20.6, 21.0, 20.4, 21.7, 22.3, 23.5, 23.5, 23.0, 24.7, 27.9, 28.9, 28.1, 33.2, 34.2, 35.9, 36.7, 37.4, 37.5, 37.7, 37.5, 37.6, 37.7, 38.0, 37.1, 36.5, 36.6, 35.7, 34.9, 34.3, 32.9, 31.6, 30.1, 28.7, 27.1, 25.6, 24.3, 22.7, 21.2, 19.5, 17.9, 16.9, 17.7, 17.9, 18.0, 18.6, 18.9, 20.1, 20.1, 20.2, 20.9, 21.5, 21.0, 21.5, 22.6, 25.1, 24.5, 24.9, 26.1, 27.2, 29.8, 30.3, 32.1, 33.3, 34.3, 35.0, 35.4, 35.7, 36.0, 35.9, 35.6, 35.0, 35.7, 34.7, 35.0, 34.5, 34.1, 33.6, 32.9, 32.2, 31.3, 29.3, 27.1, 25.3, 23.6, 22.7, 20.9, 19.6, 18.4, 18.2, 18.1, 17.7, 18.2, 18.1, 18.9, 19.6, 19.8, 20.8, 21.7, 22.0, 22.6, 22.7, 23.7, 24.5, 24.2, 25.5, 26.8, 28.6, 29.3, 30.8, 31.8, 33.3, 34.1, 34.4]
只是第一个温度：
>>> firstTemp = data['observations']['data'][0]['air_temp']
>>> print(firstTemp)
32.2