list.pop([i]) and list.remove(x) w/ for loops

[Frédéric van der Plancke]

In article <8jdfb6$ugh$1 at netnews.upenn.edu>,
  dwhite2 at blue.seas.upenn.edu (David White) wrote:

> I have a list of 2 kinds of objects, such as [a, a, b, b, a, b].
> I wan't to delete all the a objects out of the list while
> preserving the order of the b objects.

You can also use the 'filter' builtin function:

  def f(o):
    return o.type != a

  olist = filter(f, olist)
  # filter(f, olist) returns a copy of olist with only the
  # items o such that f(o) returns a true value

or shorter:

  olist = filter(lambda o: o.type != a, olist)


--
Frederic van der Plancke
e-mail address: reverse and add dots etc. to:
      <com writeme vdplancke frederic>


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