[Python-ideas] Allow Profile() to be used as a context manager

I often find it useful to profile small sections to code in a running application to pinpoint a known bottleneck. The cProfile and profile modules don't make this easy as they stand, requiring the section of code to be wrapped into a single statement with can be called as a string using exec(). This always feels a bit clumsy to me, so my idea is simply to provide __enter__ and __exit__ methods to cProfile.Profile() and profile.Profile(). From a quick look at the code it seems that this should be very easy for cProfile, and slightly less easy for profile (I can't quite figure out how to deal with the set_cmd() line, or how important it is - maybe someone can help?). Any major objections to this? David