I am trying to get realtime stock data from BSE and NSE using yahoo finance web-services. I was able to get some data using following URL
http://finance.yaho
If you are fine with getting NSE qoutes, you can use this package for the purpose, it is extremely easy to setup.
http://nsetools.readthedocs.org/en/latest/index.html
Since it uses NSE website/services as data source, the quotes will not be delayed (max few seconds).