MongoDB Pull Query Won't Work

MongoDB Pull Query Won't Work

References

Reference NO 1

http://stackoverflow.com/questions/15201488/mongodb-pull-query-wont-work

Reference NO 2

http://api.mongodb.org/python/current/tutorial.html

Reference NO 3

https://blog.serverdensity.com/does-everyone-hate-mongodb/

Reference NO 4

http://rsmith.co/2012/11/05/mongodb-gotchas-and-how-to-avoid-them/

Reference NO 5

http://www.hongkiat.com/blog/webdev-with-mongodb-part3/

Reference NO 6

http://openmymind.net/mongodb.pdf

Reference NO 7

http://net.tutsplus.com/tutorials/databases/getting-started-with-mongodb/

Reference NO 8

http://www.hacksparrow.com/the-mongodb-tutorial.html