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https://github.com/kennethreitz/python-guide.git
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Dan Bader
68 lines
1.6 KiB
ReStructuredText
68 lines
1.6 KiB
ReStructuredText
JSON
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====
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.. image:: /_static/photos/33928819683_97b5c6a184_k_d.jpg
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The `json <https://docs.python.org/2/library/json.html>`_ library can parse
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JSON from strings or files. The library parses JSON into a Python dictionary
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or list. It can also convert Python dictionaries or lists into JSON strings.
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Parsing JSON
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------------
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Take the following string containing JSON data:
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.. code-block:: python
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json_string = '{"first_name": "Guido", "last_name":"Rossum"}'
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It can be parsed like this:
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.. code-block:: python
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import json
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parsed_json = json.loads(json_string)
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and can now be used as a normal dictionary:
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.. code-block:: python
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print(parsed_json['first_name'])
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"Guido"
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You can also convert the following to JSON:
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.. code-block:: python
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d = {
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'first_name': 'Guido',
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'second_name': 'Rossum',
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'titles': ['BDFL', 'Developer'],
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}
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print(json.dumps(d))
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'{"first_name": "Guido", "last_name": "Rossum", "titles": ["BDFL", "Developer"]}'
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simplejson
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----------
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The JSON library was added to Python in version 2.6.
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If you're using an earlier version of Python, the
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`simplejson <https://simplejson.readthedocs.io/en/latest/>`_ library is
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available via PyPI.
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simplejson mimics the json standard library. It is available so that developers
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that use older versions of Python can use the latest features available in the
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json lib.
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You can start using simplejson when the json library is not available by
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importing simplejson under a different name:
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.. code-block:: python
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import simplejson as json
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After importing simplejson as json, the above examples will all work as if you
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were using the standard json library.
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