Someone helped me on another forum. Here's a solution:
import pymel.tools.mel2py as mel2py
mel2py.mel2py('C:\Documents and Settings\Administrator\My Documents
\maya\pixlScripts\pixl_addLites.mel')
#Writing converted python script: c:\documents and settings
\administrator\my documents\maya\pixlscripts\pixl_addlites.py
pythonCode = mel2py.mel2pyStr( """
setDrivenKeyframe -currentDriver pCube1.translateY pCube2.translateX;
setDrivenKeyframe -currentDriver pCube1.translateY pCube2.translateY;
setDrivenKeyframe -currentDriver pCube1.translateY pCube2.translateZ;
""")
print( pythonCode )
#from pymel.all import *
#setDrivenKeyframe('pCube2.translateX',currentDriver='pCube1.translateY')
#setDrivenKeyframe('pCube2.translateY',currentDriver='pCube1.translateY')
#setDrivenKeyframe('pCube2.translateZ',currentDriver='pCube1.translateY')
--
http://groups.google.com/group/python_inside_maya