[Python-Dev] Empty keyword

[Robert Brewer]

Sylvain Hellegouarch wrote:
> It miht sound stupid or useless, or maybe someone has already 
> mentioned 
> it but sometimes I wish Python could provdie an "Empty" 
> keyword like The 
> "None" one.
> 
> It would be usefull to validdate the emptyness of any scalar 
> or sequence 
> in an uniform way instead of using things such as :
> 
> if len(mylist) == 0:
> 
> which I really dislike.

Have you read the bit about empty lists and such when testing truth
values?
http://docs.python.org/lib/truth.html

>>> x = []
>>> if x:
... 	print True
... else:
... 	print False
... 	
False
>>> x = [0]
>>> if x:
... 	print True
... else:
... 	print False
... 	
True


Robert Brewer
MIS
Amor Ministries
fumanchu at amor.org