April 23, 2004
7:59 p.m.
At 03:41 PM 4/23/04 -0400, Jeremy Hylton wrote:
That leads me to wonder what exactly the rationale for generator expressions is. The PEP says that "time, clarity, and memory are conserved by using an generator expression" but I can only see how memory is conserved. That is, I don't find them any easier to read than list comprehensions and I don't understand the performance implications very well. It's not obvious to me that their faster.
Alex Martelli previously posted some tests that showed them to be quite a bit faster for large lists.