[Chicago] I don't get why this works

[Brantley Harris]

Okay, then it should be a key error:

> a['a'] = a[a['a']]
KeyError: 'a'


On Mon, Apr 1, 2013 at 10:25 PM, Alex Gaynor <alex.gaynor at gmail.com> wrote:

> The assignments are going left to right.
>
> Alex
>
>
> On Mon, Apr 1, 2013 at 8:24 PM, Brantley Harris <deadwisdom at gmail.com>wrote:
>
>> > a = {}
>> > a['a'] = a[a['a']] = 'b'
>> {'a': 'b', 'b': 'b'}
>>
>> What the what?  I would think that should KeyError, but it runs fine.
>>  Someone splain.
>>
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>
>
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