JSON is a lightweight data-interchange format that is easy for humans to read and write and for machines to parse and generate. It is built on two structures: a collection of name/value pairs and an ordered list of values. JSON is primarily used to transmit data between a server and web application, and is becoming the dominant format for asynchronous browser/server communication. It is used by many large companies and APIs as a way for programs to interact with websites and access data.

1. JSON

2. What isJSON?
 JSON is short for JavaScriptObject Notation.
 It is a way to store information in an organized, easy-to-access
manner.
 JSON is the native way that JavaScript programs write their data
structures and usually resembles what Pythons pprint() function
would produce.
 Ex.
{“name”: “Zophie”,
“isCat”: true,
“miceCaught”: 0,
“napsTaken”: 37.5,
“felineIQ”: null}

3. WhyJSON?
 With the rise of AJAX-powered sites, it's becoming more and more
important for sites to be able to load data quickly
and asynchronously, or in the background without delaying page
rendering.
 Many websites offer JSON content as a way for programs to
interact with the website.This is know as providing an application
programming interface (API).
 Accessing anAPI is the same as accessing any other web page via a
URL.The difference is the data returned by an API is formatted for
machines.
 Many sites offer free API’s with a simple registration to get a key with
the URL.They will also have documentation on the JSON formatting
for the site.
 Ex. Facebook,Twitter,Yahoo, Google,Tumblr,Wikipedia, Flickr, Data.gov,
Reddit, IMDB, RottenTomatoes, LinkedIn, etc.
 Download new posts from one social media site and post them to
another
 Create a movie encyclopedia for your personal movie collection

4. JSON vs.XML
 Both JSON and XML can be used to receive data from a web
server.
 JSON is Like XML Because
 Both JSON and XML are "self describing"
(human readable)
 Both JSON and XML are hierarchical (values within values)
 Both JSON and XML can be parsed and used by lots of programming
languages
 Both JSON and XML can be fetched with an XMLHttpRequest
 JSON is Unlike XML Because
 JSON doesn't use end tag
 JSON is shorter
 JSON is quicker to read and
write
 JSON can use arrays
 The biggest difference is:
 XML has to be parsed with an XML parser. JSON can be
parsed by a standard JavaScript function.

5. The json
Module
 Python’s json module handles all the details of translating
between a string with JSON data and Python values.
 loads() and dumps()
 It dumps the JSON data into a python dictionary which is very
similar to a list but are non-ordered with key-value pairs.
 Reading JSON with the loads() function
 To translate a string containing JSON data into Python values just
pass it the JSON data
 json.loads(stringOfJson)
 Writing JSON with the dump() function
 To translate a Python value into JSON data just pass
it the Python values.
 json.dumps(pythonValues)