I'm new to python so I really don't know the language very well.
the following example was taken from here http://docs.python.org/library/json.html
>>> import json
>>> json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]')
[u'foo', {u'bar': [u'baz', None, 1.0, 2]}]
what does the u mean? and how do i know which elements are available in the dictionary?
It's a unicode . Iterating over the dict yields its keys:
for k in D:
print k, D[k]
Ignacio's answer a bit more verbose (no upvotes to me)
u'something' means that 'something' is a unicode string, and not for instance an ascii string. Generally text is encoded as 8-bit characters, and you need an encoding to properly interpret/display it. Unicode is 16-bit and doesn't need seperate encodings for the various locale dependent characters.
In a dictionary (enclosed by {}) the key is the part before the ":" and the value comes after.
You got a list, with elements:
The python type function can be useful here.
>>> import json
>>> data = json.loads('["foo", {"bar":["baz", null, 1.0, 2]}]')
>>> data
[u'foo', {u'bar': [u'baz', None, 1.0, 2]}]
>>> type(data)
<type 'list'>
>>> type(data[0])
<type 'unicode'>
>>> type(data[1])
<type 'dict'>
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