[Python-Dev] [Python-3000] pre-PEP: Default Argument Expressions

[Greg Ewing]

Another thing I don't like about this default argument
proposal is that using it in any non-trivial way would
tend to put implementation details of the function
up in the header, which should be reserved for info
describing the calling signature.

The following example from the PEP is an extreme
instance of this:

 >   def bar(b=my_sum((["b"] * (2 * 3))[:4])):
 >      print b

--
Greg