Noticed an issue with autocomplete on mac osx in python. When ctrl+space is pressed, the match is completed but there is no popup window, nor do additional presses of spacebar cycle through the other options. Also it appears that it does complete local function names, and variables, but not stuff like "print" from the python libraries.
As an example, when I attempt to complete "pr" it doesn't popup or complete anything in an empty python file, but if I have a variable name pram1, it completes that. I am on OSX 10.6, python 2.6.1 and STX 20101217.
On windows I tried out the completion and it worked just as described and works fine. As for whether using ctrl+space to choose options, I'm not sure yet, but want to give it a chance and use it a bit. Immediately it wasn't what I expected coming from different editors where completion usually narrows the list as characters are added, and you can select a choice via tab or by pressing dot if access class members.
The new method does make sense in that it's fewer keys and probably less complex to implement. The only downside I can see is if there were a very long list of options.