Deleting from a list while iterating

[Fredrik Lundh]

Rhamphoryncus wrote:

> Sorry, I should have clarified that the original post assumed you
> needed info from the "do something" phase to determine if an element is
> removed or not.  As you say, a list comprehension is superior if that
> is not necessary.

that's spelled

     out = []
     for i in items:
         ... do something ...
	if i > 0.5:
	    out.append(i)

in Python, and is only a little slower than a list comprehension, as 
written above.  if performance is really important, move the method 
lookup out of the loop:

     out = []
     append = out.append
     for i in items:
         ... do something ...
	if i > 0.5:
	    append(i)

</F>