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Re: copy on write

Started byEduardo Suarez-Santana <esuarez@itccanarias.org>
First post2012-01-13 11:44 +0000
Last post2012-01-13 11:44 +0000
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  Re: copy on write Eduardo Suarez-Santana <esuarez@itccanarias.org> - 2012-01-13 11:44 +0000

#18909 — Re: copy on write

FromEduardo Suarez-Santana <esuarez@itccanarias.org>
Date2012-01-13 11:44 +0000
SubjectRe: copy on write
Message-ID<mailman.4708.1326455100.27778.python-list@python.org>
El 13/01/12 11:33, Eduardo Suarez-Santana escribió:
> I wonder whether this is normal behaviour.
>
Even simpler:

$ python
Python 2.7.2 (default, Oct 31 2011, 11:54:55)
[GCC 4.5.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> r={'a':1};
 >>> d={};
 >>> d['x']=r;
 >>> d['y']=r;
 >>> d['x']['a']=3
 >>> d['y']
{'a': 3}
 >>>

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