I am trying to import the OpenGL.GL module.
Given the py file with that line, I can perform "python file.py" just fine, but I cannot run that same file when used in Aptana or Eclipse. Both IDEs have PyDev installed.
I do have PyOpenGL installed.
I wish to point out that I can still import other modules (PIL, numpy), which were installed the same way as the PyOpenGL. I am confident that there is only 1 python running on my MacOS.
Maybe you need to reconfigure your interpreter.
If you installed PyOpenGL as an egg after pydev was set up your PYTHONPATH might be out of date.
Check out Preferences->PyDev->Interpreter - Python
Python OpenGL in Eclipse/Aptana