URL参数我做错了什么？

Question

我试图从ridbapi（政府娱乐数据）获取信息。但是，我对如何使用URL参数感到困惑。我查了很多例子，尝试了很多不同的方法。在

首先，我有一个https://ridb.recreation.gov/api/v1/trails/USFS/，它工作得很好。我得到一个包含线索信息的JSON结果，完美。但是，如果我尝试https://ridb.recreation.gov/api/v1/trails/USFS/milesmin10或https://ridb.recreation.gov/api/v1/trails/USFS/milesmin=10或{}或{}作为例子，我什么也得不到。从所附图片中可以看出，milesmin是一个可接受的参数，有人能解释一下我的代码中是如何包含这些参数的，以及/或我明显做错了什么。在

Answer 1

我用了requests，效果很好。您必须注册their API key才能使用此服务。过程很快，不到5分钟我就拿到了钥匙。这是得到结果的代码。在

import requests

# You must replace <your api key> with the key they give you
api = <your api key>
url = 'https://ridb.recreation.gov/api/v1/trails/USFS/'

params = {'milesmin': 10, 'apikey': api}

r = requests.get(url, params=params)


#    In [168]: r.request.url
#    Out[168]: 'https://ridb.recreation.gov/api/v1/trails/USFS/?milesmin=10&apikey=<your api key>'

#    In [169]: r.text[:500]
#    Out[169]: u'{"RECDATA":[{"TypicalTreadWidth":"N\\/A","MinimumTrailWidth":"N\\/A","TypicalTreadCrossSlope
#    ":"N\\/A","TerraMotorized":"N\\/A","AllowedSnowUse":"N\\/A","PackSaddleRestricted":"N\\/A",
#    "TrailSurface":"N\\/A","TrailNo":"8021SA","AllowedTerraUse":"N\\/A","XcountrySkiAccptDisc":"N\\/A",
#    "TrailUSFSID":20,"NonmotorWatercraftManaged":"N\\/A","XcountrySkiManaged":"N\\/A",
#    "BicycleManaged":"N\\/A","ShapeLength":0.5105766578900838,"MVUMSymbol":99,
#    "MotorcycleManaged":"N\\/A","GEOM":"LINESTRING (-111.69189874799997 39.9735'