DB<119> sub ANYTHING {}
 
  DB<120> print "false" unless ANYTHING
false

##</code><code>##

> python
Python 2.5.2 (r252:60911, Jan 20 2010, 23:16:55) 
[GCC 4.3.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> False,True=True,False
>>> False
True
>>> True
False