Operation on value of a particular key in a dictionary stored as a list in Python

Operation on value of a particular key in a dictionary stored as a list in
Python

References

Reference NO 1

http://stackoverflow.com/questions/15186149/operation-on-value-of-a-particular-key-in-a-dictionary-stored-as-a-list-in-pytho

Reference NO 2

http://www.itmaybeahack.com/book/python-2.6/html/p02/p02c05_maps.html

Reference NO 3

http://docs.python.org/3/tutorial/datastructures.html

Reference NO 4

http://www.pythonforbeginners.com/dictionary/

Reference NO 5

https://www.inkling.com/read/learning-python-mark-lutz-4th/chapter-8/ch08-section-03

Reference NO 6

http://www.tutorialspoint.com/python/python_dictionary.htm

Reference NO 7

http://www.greenteapress.com/thinkpython/html/book012.html

Reference NO 8

http://www.jython.org/jythonbook/en/1.0/DataTypes.html