Does anyone know how to get an intellisense like functionality (better than default) in eclipse for python development? I am using Eclipse 3.5 with aptana and pydev and the interpreter is python 2.5.2
You are probably never going to get something as good as intellisense for python. Due to the dynamic nature of python, it is often impossible to be able to know the type of some variables. 
And if you don't know their types, you can't do auto-complete on things like class members.
Personally, I think the auto-complete in PyDev is pretty good, given the nature of python. It isn't as good as for Java and probably won't be, but it sure beats not having anything.
Having said that, I haven't tried if PyDev is able to use the parameter types you can specify in python 3.x. Otherwise, that might be an improvement that could make life a little easier.
Update: Got curious and did a quick test, Looks like optional type information in python 3 is not used by PyDev.
How do you get Intellisense for Python in Eclipse/Aptana/Pydev?