problem with optparse

[Robert Kern]

Neal Becker wrote:
> This example is right out of python library reference.  What's wrong here?
> 
> import optparse
> 
> def store_value(option, opt_str, value, parser):
>     setattr(parser.values, option.dest, value)
> 
> parser = optparse.OptionParser()
> parser.add_option("--foo",
>                   action="callback", callback=store_value,
>                   type="int", nargs=3, dest="foo")
> 
> (opt,args) = parser.parse_args ('--foo a b c'.split())
> 
> [...]
> /usr/lib64/python2.5/optparse.pyc in _process_args(self, largs, rargs, values)
>    1423             elif self.allow_interspersed_args:
>    1424                 largs.append(arg)
> -> 1425                 del rargs[0]
>    1426             else:
>    1427                 return                  # stop now, leave this arg in rargs
> 
> TypeError: 'str' object doesn't support item deletion

Dunno. It works for me (i.e. I get the expected "error: option --foo: invalid 
integer value: 'a'"). Have you tried it outside of IPython?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco