[Python-Dev] removing nested tuple function parameters

Terry Reedy tjreedy at udel.edu
Mon Sep 19 19:06:32 CEST 2005

I consider the current situation to be a consistency feature.  To a first 
approximation, Python function calls 'pass' objects by name-binding:

param_name_list = arg_object_list

Disabling structure unpacking in this assignment would make the language 
slightly more complex.  Someone else posted the same observation in c.l.p.

Another thought.  By directly unpacking and not naming a sequence, one 
'announces' that only the components are of interest and that nothing will 
be done with the sequence object itself.

Terry J. Reedy

More information about the Python-Dev mailing list