Re: learning python. learning defining functions . need help

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On Fri, Jul 22, 2016, at 11:21, justin walters wrote:
> Try opening the interactive terminal on your command line and type the
> following:
> 
>     type({}) == dict()
> 
> That should illustrate why. 

That doesn't illustrate anything relevant at all. The reason this is
false is because dict() is a dict instance, not the dict type.

type({}) == dict == type(dict()) will always* be true.

>This is because simply typing '{}' could be interpreted as either a
>dict or a set. My interpreter defaults 'type({})' to 'dict', but it's
>best to not take the risk.

This is part of the language spec, it is not something that can be
chosen by each interpreter.

*well, assuming that "type" and "dict" have not been reassigned from
their built-in definitions.

Thread

learning python. learning defining functions . need help sigmaphine1914@gmail.com - 2016-07-21 19:27 -0700
  Re: learning python. learning defining functions . need help Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-22 09:13 -0400
  Re: learning python. learning defining functions . need help Chris Angelico <rosuav@gmail.com> - 2016-07-22 23:24 +1000
  Re: learning python. learning defining functions . need help justin walters <walters.justin01@gmail.com> - 2016-07-22 08:21 -0700
    Re: learning python. learning defining functions . need help Steven D'Aprano <steve@pearwood.info> - 2016-07-23 11:44 +1000
  Re: learning python. learning defining functions . need help Random832 <random832@fastmail.com> - 2016-07-22 11:35 -0400
  Re: learning python. learning defining functions . need help Chris Angelico <rosuav@gmail.com> - 2016-07-23 01:35 +1000
  Re: learning python. learning defining functions . need help "D'Arcy J.M. Cain" <darcy@Vex.Net> - 2016-07-22 11:41 -0400
  Re: learning python. learning defining functions . need help MRAB <python@mrabarnett.plus.com> - 2016-07-22 19:36 +0100
  Re: learning python. learning defining functions . need help Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-22 20:04 -0400
  Re: learning python. learning defining functions . need help Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2016-07-23 11:39 -0400

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