Hello there,
To whom it may concern,
I am having difficulty interacting with JSON. The example below if a
typical input and output:
*import json*
*array = json.load( { "name": "Joe", "address": "111 Street" } )*
*Traceback (most recent call last): File "<stdin>" , line 1, in <module>
File "C:\Python27\lib\json\__init__.py" , line 286, in load return
loads(fp.read(), AttributeError: 'dict' object has no attribute 'read' >>>*
I would appreciate assitance understanding why this doesn't work,
and how I can get up-and-running with inputing JSON code into
Python.
Which version of Python? The following works with Python 3.x and
Python 2.7, though:
arr = json.loads('{ "name": "Joe", "address": "111 Street" }')
arr.get('address')
Here are some notes about why:
# -- below is a Python dictionary, it is not actually JSON
>>> { "name": "Joe", "address": "111 Street" }
{'name': 'Joe', 'address': '111 Street'}
# -- next is that Python dictionary turned into JSON (single quotes)
>>> '{ "name": "Joe", "address": "111 Street" }'
'{ "name": "Joe", "address": "111 Street" }'
# -- now you have a JavaScript Object Notation string, which you
# can manipulate; let's use the json.loads() call
>>> arr = json.loads('{ "name": "Joe", "address": "111 Street" }')
# -- You will notice I used a variable called 'arr' instead of
# array, because there is a module called array, and I may
# (one day) want to use it.
>>> arr
{'name': 'Joe', 'address': '111 Street'}
# -- OK, but I'm lazy, I don't want to have to type all of my
# JSON into strings. OK. So, don't. Have the JSON module
# convert your object (a dictionary) into a string for you.
>>> json.dumps(arr)
'{"name": "Joe", "address": "111 Street"}'
So, have some fun with the json.dumps() and json.loads() calls.
Then, you can move on to json.dump() and json.load() to put your
data into files.
-Martin
--
Martin A. Brown
http://linux-ip.net/
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