It would be nice if we could use Python for writing macros rather than VBA. (I realize that it's possible to automate Excel externally using Python and the COM interface, but this is slow.)
Mohammad Naveed commented
i would also love to see python writing in excel VBA without installing Python application , this will help alot on processing large huge amount of data using Python pandas.
Jan Wx, NZ commented
I'm all in favor of Python, and please, please, no java script. Java script is a terrible idea and retro step in computing.