When using python and selenium how to find the presence of an element based on id and value

When using python and selenium how to find the presence of an element
based on id and value

References

Reference NO 1

http://stackoverflow.com/questions/15187345/when-using-python-and-selenium-how-to-find-the-presence-of-an-element-based-on-i

Reference NO 2

http://stackoverflow.com/questions/9567069/python-selenium-webdriver-checking-element-exists

Reference NO 3

http://www.qaautomation.net/?p=388

Reference NO 4

http://docs.seleniumhq.org/docs/02_selenium_ide.jsp

Reference NO 5

http://sauceio.com/index.php/tag/selenium-tips/

Reference NO 6

http://www.seleniumtests.com/p/selenium-interview-questions.html

Reference NO 7

http://www.scribd.com/doc/55337965/Selenium-Documentation

Reference NO 8

https://thenewcircle.com/bookshelf/selenium_tutorial/testing_strategies.html