[Python-Dev] A `cogen' module - an observation

Oren Tirosh oren-py-d@hishome.net
Tue, 27 Aug 2002 01:29:11 -0400

[f(x, y) for x in X for y in Y] 

  is equivalent to:

[f(x, y) for x, y in cartesian(X, Y)] 

I never found any real use for list comprehensions with more than one 
dimension. When I use nested loops they are usually for something that 
cannot be expressed as a list comprehension.