如何从网页获取JSON到Python脚本
在我的一个脚本中获得了以下代码：
#
# url is defined above.
#
jsonurl = urlopen(url)
#
# While trying to debug, I put this in:
#
print jsonurl
#
# Was hoping text would contain the actual json crap from the URL, but seems not...
#
text = json.loads(jsonurl)
print text
我想要做的是获得我在URL中看到的{{.....etc.....}}东西，当我将它加载到Firefox中时，我可以从中解析出一个值。 我谷歌搜索了很长时间，但是我还没有找到一个好的答案，就如何实际获取以.json结尾的URL中的{{...}}内容到Python脚本中的对象。
从URL获取数据，然后调用json.loads例如
Python2例子 ：
import urllib, json
url = "http://maps.googleapis.com/maps/api/geocode/json?address=google"
response = urllib.urlopen(url)
data = json.loads(response.read())
print data
Python3例子 ：
import urllib.request, json
with urllib.request.urlopen("http://maps.googleapis.com/maps/api/geocode/json?address=google") as url:
data = json.loads(url.read().decode())
print(data)
输出结果会是这样的：
{
"results" : [
{
"address_components" : [
{
"long_name" : "Charleston and Huff",
"short_name" : "Charleston and Huff",
"types" : [ "establishment", "point_of_interest" ]
},
{
"long_name" : "Mountain View",
"short_name" : "Mountain View",
"types" : [ "locality", "political" ]
},
{
...
我会猜测你确实想从网址获取数据：
jsonurl = urlopen(url)
text = json.loads(jsonurl.read()) # <-- read from it
或者，查看请求库中的JSON解码器。
import requests
r = requests.get('someurl')
print r.json() # if response type was set to JSON, then you'll automatically have a JSON response here...
这使用Python 2.X和Python 3.X从网页获得JSON格式的饮食：
#!/usr/bin/env python
try:
# For Python 3.0 and later
from urllib.request import urlopen
except ImportError:
# Fall back to Python 2's urllib2
from urllib2 import urlopen
import json
def get_jsonparsed_data(url):
"""
Receive the content of ``url``, parse it as JSON and return the object.
Parameters
----------
url : str
Returns
-------
dict
"""
response = urlopen(url)
data = response.read().decode("utf-8")
return json.loads(data)
url = ("http://maps.googleapis.com/maps/api/geocode/json?"
"address=googleplex&sensor=false")
print(get_jsonparsed_data(url))
另请参阅：读取和写入JSON示例
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