"Peter Otten" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > You are in for a surprise here:
You got that right! > >>> def empty(): > ... for item in []: > ... yield item > ... > >>> bool(empty()) > True Ouch. > >>> bool(iter([])) > True # python 2.3 and probably 2.5 > > >>> bool(iter([])) > False # python 2.4 Double ouch. I was relying on Python 2.4 behavior. What is the reasoning behind the changes? (Can you offer a URL to a discussion?) So, is the only way to test for an empty iterable to see if it can generate an item? I found this: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/413614 Seems like a reason to rely on sequences ... Thanks, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
