Get json data via url and use in python (simplejson)

Question

I imagine this must have a simple answer, but I am struggling: I want to take a url (which outputs json) and get the data in a usable dictionary in python. I am stuck on the last step.

>>> 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 

Any ideas where I am going wrong?

Answer 1

Try

f = opener.open(req) simplejson.load(f) 

without running f.read() first. When you run f.read(), the filehandle's contents are slurped so there is nothing left when your call simplejson.load(f)