Re: how to get names of attributes

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From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: how to get names of attributes
Date	Thu, 31 Dec 2015 00:45:05 +1100
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On Thu, Dec 31, 2015 at 12:31 AM, Charles T. Smith
<cts.private.yahoo@gmail.com> wrote:
> Okay, thank you.  I'm trying to understand your program.
>
> Unfortunately, I haven't gotten the same output you had, using python 2.6
> or 2.7.  Maybe I haven't been able to restore the indentation correctly
> after having been filtered through pan(1).
>
> I wonder what the difference is between vars() and items()

What I sent you was a log of interactive Python, so there are prompts
and continuation prompts. Here's a script version of the same thing
(running under CPython 2.7):

class X: pass

class Y(X): pass

class Z(Y): pass

X.x=1
Y.y=2
Z.z=3
inst=Z()
inst.i=4
def class_vars(old_style_class):
    v = {}
    for cls in old_style_class.__bases__:
        v.update(class_vars(cls))
    v.update(vars(old_style_class))
    return v

def all_vars(old_style_inst):
    v = class_vars(old_style_inst.__class__)
    v.update(vars(old_style_inst))
    return v

print(all_vars(inst))
# {'i': 4, '__module__': '__main__', 'y': 2, 'x': 1, 'z': 3, '__doc__': None}

Does that work better?

ChrisA

Thread

how to get names of attributes "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2015-12-30 11:51 +0000
  Re: how to get names of attributes Chris Angelico <rosuav@gmail.com> - 2015-12-30 22:58 +1100
  Re: how to get names of attributes "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2015-12-30 12:16 +0000
    Re: how to get names of attributes Chris Angelico <rosuav@gmail.com> - 2015-12-30 23:34 +1100
  Re: how to get names of attributes "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2015-12-30 12:40 +0000
    Re: how to get names of attributes Chris Angelico <rosuav@gmail.com> - 2015-12-30 23:50 +1100
      Re: how to get names of attributes "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2015-12-30 13:31 +0000
        Re: how to get names of attributes Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-30 14:16 +0000
        Re: how to get names of attributes Chris Angelico <rosuav@gmail.com> - 2015-12-31 00:45 +1100
    Re: how to get names of attributes Random832 <random832@fastmail.com> - 2015-12-30 12:04 -0500
    Re: how to get names of attributes Chris Angelico <rosuav@gmail.com> - 2015-12-31 09:26 +1100
  Re: how to get names of attributes Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-30 14:10 +0000
    Re: how to get names of attributes "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2015-12-30 14:50 +0000
  Re: how to get names of attributes Steven D'Aprano <steve@pearwood.info> - 2015-12-31 10:58 +1100
    Re: how to get names of attributes "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2015-12-31 10:46 +0000

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