I am using eclipse for python. 
  How do I import an existing project into eclipse in the current workspace.
Thanks
In my case when i am trying to import my existing perforce project , it gives error no project found on windows machine. On linux i was able to import project nicely.
For Eclipse Kepler, i have done like below.

Open eclipse in pydev perspective.
Create a new pydev project in your eclipse workspace with the same name which project you want to import.
By now in your eclipse workspace project dir , you must be having .project and .pydevproject files.
Copy these two files and paste it to project dir which you want to import.
Now close and delete the pydev project you created and delete it from local disk as well.
Now you can use import utility to import project in eclipse.
How do I import a pre-existing python project into Eclipse?