use double quotes in string python code example

Example 1: python get the elements between quotes in string

import re
foo = 'SetVariables "a" "b" "c" '
bar = re.findall('"([^"]*)"', foo)

print(bar)
### ['a", 'b', 'c']

Example 2: python return double quotes instead of single

>>> import json
>>> List = ["A", "B"]
>>> print json.dumps(List)
["A", "B"]