For review: PEP 308 - If-then-else expression

John La Rooy nospampls.jlr at doctor.com
Mon Feb 10 22:06:06 CET 2003


On Mon, 10 Feb 2003 12:26:34 +0100
holger krekel <pyth at devel.trillke.net> wrote:


> 
> > >> If you parenthesize it:
> > 
> > >> (if debug: sys.stderr.write('got here\n') else: None)
> > 
> > >> then the "if" is no longer the first token in the statement, so it
> > >> introduces an if-expression.  No problem.
> 
> Special cases aren't special enough ...  
> 
> We all like Python's easy grammar and uniformity, don't we? 
> 
>     holger
> 

Indeed. Could we perhaps consider making if an expression in every case and
have it evaluate to the last expression in the block so we could write

print if x>0:
          ### possibly several lines of code here...
          ...
          f(x)
      else:
          ### and here too...
          ...
          f(-x)

John

          




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