我想这肯定有一个简单的答案,但我正在努力:我想获取一个url(输出json)并在python中的一个可用字典中获取数据。我被困在最后一步。
>>> import urllib2
>>> import simplejson
>>> req = urllib2.Request("http://vimeo.com/api/v2/video/38356.json", None, {'user-agent':'syncstream/vimeo'})
>>> opener = urllib2.build_opener()
>>> f = opener.open(req)
>>> f.read() # this works
'[{"id":"38356","title":"Forgetfulness - Billy Collins Animated Poetry","description":"US Poet Laureate Billy Collins reads his poem ","url":"http:\\/\\/vimeo.com\\/38356","upload_date":"2006-01-24 15:21:03","thumbnail_small":"http:\\/\\/80.media.vimeo.com\\/d1\\/5\\/47\\/74\\/thumbnail-4774968.jpg","thumbnail_medium":"http:\\/\\/80.media.vimeo.com\\/d1\\/5\\/46\\/85\\/thumbnail-4685118.jpg","thumbnail_large":"http:\\/\\/images.vimeo.com\\/87\\/39\\/873998\\/873998_640x480.jpg","user_name":"smjwt","user_url":"http:\\/\\/vimeo.com\\/smjwt","user_portrait_small":"http:\\/\\/bitcast.vimeo.com\\/vimeo\\/portraits\\/defaults\\/d.30.jpg","user_portrait_medium":"http:\\/\\/bitcast.vimeo.com\\/vimeo\\/portraits\\/defaults\\/d.75.jpg","user_portrait_large":"http:\\/\\/bitcast.vimeo.com\\/vimeo\\/portraits\\/defaults\\/d.100.jpg","user_portrait_huge":"http:\\/\\/bitcast.vimeo.com\\/vimeo\\/portraits\\/defaults\\/d.300.jpg","stats_number_of_likes":"281","stats_number_of_plays":"9173","stats_number_of_comments":23,"duration":"112","width":"320","height":"240","tags":"poetry, poet, online poetry, famous poet, video poetry, modern poetry, famous poem, poetry sites, poetry websites, audio poetry, american poet, animation clips, american poetry, free poetry sites, animation art, free poetry, animated clips, poem, poet laureate"}]'
>>> simplejson.load(f)
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/usr/lib/python2.5/site-packages/django/utils/simplejson/__init__.py", line 298, in load
parse_constant=parse_constant, **kw)
File "/usr/lib/python2.5/site-packages/django/utils/simplejson/__init__.py", line 338, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.5/site-packages/django/utils/simplejson/decoder.py", line 326, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python2.5/site-packages/django/utils/simplejson/decoder.py", line 344, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
你知道我错在哪里吗?
有一个更简单的方法-你根本不需要simplejson。只要将true/false/null设置为正确的值,Python就可以使用eval语句将json解析为dict/数组。
第一行读取整个文件。然后,第二行尝试从文件中读取更多内容,但没有留下任何内容:
要么省略f.read()行,要么保存read中的值,并在加载时使用它:
试试看
先不运行f.read()。当您运行f.read()时,文件句柄的内容会被slurpped,因此当您调用
simplejson.load(f)
时不会留下任何内容相关问题 更多 >
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