[Python-Dev] Changing float.__format__

[Eric Smith]

In issue 5920, Mark Dickinson raises an issue having to do with 
float.__format__ and how it handles the default format presentation type 
(that is, none of 'f', 'g', or 'e') versus how str() works on floats: 
http://bugs.python.org/issue5920

I agree with him that the current behavior is confusing and should be 
changed. I'm going to make this change, unless anyone objects. Please 
comment on the issue itself if you have any feedback.

Eric.