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Groups > comp.lang.python > #75455
| References | <CAFBK5a-hjukHaHOim4tL_RerXiHsFP03eaQoN42yGfeCJ9NZPg@mail.gmail.com> |
|---|---|
| Date | 2014-07-31 20:08 -0700 |
| Subject | Re: Dict when defining not returning multi value key error |
| From | Dan Stromberg <drsalists@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.12500.1406862508.18130.python-list@python.org> (permalink) |
On Thu, Jul 31, 2014 at 4:24 AM, Dilu Sasidharan <dilu.seven@gmail.com> wrote:
> Hi,
>
> I am wondering why the dictionary in python not returning multi value key
> error when i define something like
>
> p = {'k':"value0",'k':"value1"}
>
> key is string immutable and sometimes shares same id.
>
> also if the key is immutable and have different ids.
>
> like
>
> p = {'1':"value0",'1.0':"value1"}
If you want a dict that refuses to overwrite a key-value pair, you
could create one starting from
http://stackoverflow.com/questions/3387691/python-how-to-perfectly-override-a-dict
. It's not an unreasonable behavior that you're looking for, but
neither is the actual behavior.
For 1 and 1.0 - they simply hash differently. Dictionaries are
resizeable hash tables.
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Re: Dict when defining not returning multi value key error Dan Stromberg <drsalists@gmail.com> - 2014-07-31 20:08 -0700
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