I have a project on eclipse and I am wondering why I do not see the package symbol on the folders in the hierarchy.
Do I have to choose an option to be able to see the folders appear as package on eclipse?
I am using PyDev plugin here..
Three things spring to mind:

Does the project have a pythonpath set? Right-click the project -> properties -> pythonpath. Add the root project directory, or whatever is appropriate for your project.
Do your packages contain an __init__.py file?
Have you got a python interpreter configured in PyDev?
Is your package explorer tab/window titled "PyDev Package Explorer"? If not, got to Window -> "Show View" -> "PyDev Package Explorer".
Do you have the pydev builder enabled? (PyDev Settings -> Builders)
How to get package icon in eclipse?