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Groups > comp.lang.python > #2918

Re: Argument of the bool function

From Robert Kern <robert.kern@gmail.com>
Subject Re: Argument of the bool function
Date 2011-04-09 18:22 -0500
Organization The Church of Last Thursday
References <4d9f374b$0$12803$426a34cc@news.free.fr> <mailman.155.1302281042.9059.python-list@python.org> <4d9f7efc$0$1065$426a74cc@news.free.fr> <mailman.164.1302299590.9059.python-list@python.org> <4d9f9383$0$21107$426a74cc@news.free.fr>
Newsgroups comp.lang.python
Message-ID <mailman.180.1302391392.9059.python-list@python.org> (permalink)

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On 2011-04-08 17:59 , candide wrote:
> Le 09/04/2011 00:03, Ethan Furman a écrit :
>
>> > bool([x])
>> > Convert a value to a Boolean, using the standard truth testing
>> > procedure.
>> >
>>
>> As you can see, the parameter name is 'x'.
>
>
> OK, your response is clarifying my point ;)
>
>
> I didn't realize that in the bool([x]) syntax, identifier x refers to a
> "genuine" argument [I was considering x as referring to a "generic" object
> having a boolean value].
>
>
> Nevertheless, compare with the definition the doc provides for the builtin
> function dir():
>
> dir([object])
> [definition omited, just observe the declaration syntax]
>
> Now, lets make a try
>
>  >>> dir(object="Explicit is better than implicit")
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> TypeError: dir() takes no keyword arguments
>  >>>
>
> Not very meaningful, isn't it ?

No one is saying that every instance of "foo([arg])" in the docs means that the 
given argument is named such that it is available for keyword arguments. What 
people are saying is that for bool(), *that happens to be the case*.

-- 
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

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Thread

Argument of the bool function candide <candide@free.invalid> - 2011-04-08 18:26 +0200
  Re: Argument of the bool function Benjamin Kaplan <benjamin.kaplan@case.edu> - 2011-04-08 12:41 -0400
    Re: Argument of the bool function candide <candide@free.invalid> - 2011-04-10 14:54 +0200
      Re: Argument of the bool function Chris Angelico <rosuav@gmail.com> - 2011-04-10 23:02 +1000
        Re: Argument of the bool function Mel <mwilson@the-wire.com> - 2011-04-10 12:21 -0400
          Re: Argument of the bool function "Colin J. Williams" <cjw@ncf.ca> - 2011-04-10 13:51 -0400
          Re: Argument of the bool function Ben Finney <ben+python@benfinney.id.au> - 2011-04-11 09:46 +1000
          Re: Argument of the bool function Ethan Furman <ethan@stoneleaf.us> - 2011-04-11 16:00 -0700
  Re: Argument of the bool function Mel <mwilson@the-wire.com> - 2011-04-08 16:42 +0000
  Re: Argument of the bool function Ian Kelly <ian.g.kelly@gmail.com> - 2011-04-08 10:43 -0600
    Re: Argument of the bool function candide <candide@free.invalid> - 2011-04-08 23:32 +0200
      Re: Argument of the bool function Ethan Furman <ethan@stoneleaf.us> - 2011-04-08 15:03 -0700
        Re: Argument of the bool function candide <candide@free.invalid> - 2011-04-09 00:59 +0200
          Re: Argument of the bool function Lie Ryan <lie.1296@gmail.com> - 2011-04-09 15:45 +1000
            Re: Argument of the bool function Grant Edwards <invalid@invalid.invalid> - 2011-04-10 03:35 +0000
              Re: Argument of the bool function rusi <rustompmody@gmail.com> - 2011-04-09 21:15 -0700
                Re: Argument of the bool function Robert Kern <robert.kern@gmail.com> - 2011-04-10 01:22 -0500
          Re: Argument of the bool function Robert Kern <robert.kern@gmail.com> - 2011-04-09 18:22 -0500
            Re: Argument of the bool function candide <candide@free.invalid> - 2011-04-10 02:33 +0200
      Re: Argument of the bool function Ben Finney <ben+python@benfinney.id.au> - 2011-04-09 07:57 +1000

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