自 Python 2.5 以後，內建 all() 與 any() 可用來判別选代子是否存有任何值為真或假。

以碼演義：

{{{
#!python
>>> GoodSoulsComeToRest = ['Strangefolk', ('Monkey', 'Happyfolk') ]
>>> all( GoodSoulsComeToRest )
True
>>> GoodSoulsComeToRest = [ 0, ('Monkey', 'as 0 appear in here...') ]
>>> all( GoodSoulsComeToRest )
False
>>> any( GoodSoulsComeToRest )           # Monkey strings still there
True
>>> black = 0,0,0,0,0,0
>>> ManInBlack = [man for man in black]  # Just a 0-list clone
>>> any( ManInBlack )
False
>>> all( ManInBlack )                    # Since no any, of course not all
False
}}}
[[http://amix.dk/blog/viewEntry/19303|amix.dk - Python 2.5: Using any function]]

[[http://www.artima.com/weblogs/viewpost.jsp?thread=98196|The fate of reduce() in Python 3000]]

[[http://docs.python.org/whatsnew/other-lang.html|Other Language Changes]] in Python 2.5