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Re: Convert namedtuple to dictionary

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On 25/09/2013 23:45, tripsvt@gmail.com wrote:
> Need suggestions.
>
> Say, I have a namedtuple like this:
>
> {'a': brucelee(x=123, y=321), 'b': brucelee('x'=123, 'y'=321)

I assume you mean:

{'a': brucelee(x=123, y=321), 'b': brucelee(x=123, y=321)}

>
> I need to convert it to:
>
> {'a': {'x':123, 'y': 321},'b': {'x':123, 'y': 321}}
>
You can get the field names using ._fields and the values by using
list(...):

 >>> n = brucelee(x=123, y=321)
 >>> n._fields
('x', 'y')
 >>> list(n)
[123, 321]

Zip then together and pass the result to dict:

 >>> dict(zip(n._fields, list(n)))
{'x': 123, 'y': 321}

And, finally, putting that in a dict comprehension:

 >>> n = {'a': brucelee(x=123, y=321), 'b': brucelee(x=123, y=321)}
 >>> {k: dict(zip(v._fields, list(v))) for k, v in n.items()}
{'a': {'x': 123, 'y': 321}, 'b': {'x': 123, 'y': 321}}

> Follow-up question --
>
> Which would be easier to work with if I had to later extract/manipulate the 'x', 'y' values? The format (dicts) above or a list of values like this:
>
> {'a': ['x':123, 'y': 321],'b': ['x':123, 'y': 321]}
>
That's not valid Python!

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Convert namedtuple to dictionary tripsvt@gmail.com - 2013-09-25 15:45 -0700
  Re: Convert namedtuple to dictionary Tim Chase <python.list@tim.thechases.com> - 2013-09-25 18:41 -0500
    Re: Convert namedtuple to dictionary Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-09-26 01:08 +0000
      Re: Convert namedtuple to dictionary MRAB <python@mrabarnett.plus.com> - 2013-09-26 02:15 +0100
      Re: Convert namedtuple to dictionary Terry Reedy <tjreedy@udel.edu> - 2013-09-25 21:45 -0400
      Re: Convert namedtuple to dictionary Tim Chase <python.list@tim.thechases.com> - 2013-09-26 06:51 -0500
  Re: Convert namedtuple to dictionary MRAB <python@mrabarnett.plus.com> - 2013-09-26 00:52 +0100
  Re: Convert namedtuple to dictionary Ned Batchelder <ned@nedbatchelder.com> - 2013-09-25 20:15 -0400
  Re: Convert namedtuple to dictionary Steven D'Aprano <steve@pearwood.info> - 2013-09-26 03:48 +0000
  Re: Convert namedtuple to dictionary Peter Otten <__peter__@web.de> - 2013-09-26 08:47 +0200

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