JSON

import json

# Returns a Python data structure.
vals = json.loads(open('foo.json').read())

data = {
    'name': 'Za',
    'size': 3,
    'age': 1.4,
}

s = json.dumps(data) # Returns a string containing json.

Note, re json vs Python:

About json:

• strings go in double-quotes only
• no comments in .json files
• no trailing commas
• top-level object is usually a dict