python之如何将 Py3k HTTPResponse 转储到 json.load 中

我认为 json.load() 应该能够像 http.client.HTTPResponse 一样读取对象，但它似乎在 上出错了read() 是一个类似字节的对象。 (我使用的是 Python 3.3。)令我惊讶的是，尽管我认为这是一个主要用例，但我没有发现直接解决此用途的资源。

import urllib.request, json 
 
# Y!F url 
yf = 'http://d.yimg.com/autoc.finance.yahoo.com/autoc' 
 
# Mock lookup 
data = urllib.parse.urlencode({'query': 'Ford', 'callback': 'YAHOO.Finance.SymbolSuggest.ssCallback'}) 
data = data.encode('utf-8') 
request = urllib.request.Request(yf) 
request.add_header('User-Agent','Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/536.26.14 (KHTML, like Gecko) Version/6.0.1 Safari/536.26.14') 
request.add_header('Content-type','text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8;charset=utf-8') 
request.add_header('Accept','text/plain') 
 
mock = urllib.request.urlopen(request, data) 
json.load(mock) 

这会导致错误:

Traceback (most recent call last): 
  File "<stdin>", line 1, in <module> 
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/json/__init__.py", line 264, in load 
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw) 
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/json/__init__.py", line 309, in loads 
    return _default_decoder.decode(s) 
  File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/json/decoder.py", line 352, in decode 
    obj, end = self.raw_decode(s, idx=_w(s, 0).end()) 
TypeError: can't use a string pattern on a bytes-like object 

请您参考如下方法:

这已在上一个线程中解决:Python 3, let json object accept bytes or let urlopen output strings (HT:马修特雷弗)

此外，Yahoo!这里返回的不仅仅是 JSON 对象，还有一个 YAHOO.Finance.SymbolSuggest.ssCallback() 包装器。剥离可以解决问题。 (尽管仍然很难过，但这是需要的。)

这个有效:

import urllib.request, json, re 
 
# Y!F url 
yf = 'http://d.yimg.com/autoc.finance.yahoo.com/autoc' 
 
# Mock lookup 
data = urllib.parse.urlencode({'query': 'Ford', 'callback': 'YAHOO.Finance.SymbolSuggest.ssCallback'}) 
data = data.encode('utf-8') 
request = urllib.request.Request(yf) 
response = urllib.request.urlopen(request, data) 
j = json.loads(re.search(r'{.*}',response.readall().decode('utf-8')).group())