Re: Dict when defining not returning multi value key error

References	<CAFBK5a-hjukHaHOim4tL_RerXiHsFP03eaQoN42yGfeCJ9NZPg@mail.gmail.com> <CAGGBd_riruS0nRM9+o+1dz=jVZgYOo09qX97P+LWK5Nu6HTYRw@mail.gmail.com>
Date	2014-07-31 20:12 -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.12501.1406862741.18130.python-list@python.org> (permalink)

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On Thu, Jul 31, 2014 at 8:08 PM, Dan Stromberg <drsalists@gmail.com> wrote:

>> p = {'1':"value0",'1.0':"value1"}

> For 1 and 1.0 - they simply hash differently.  Dictionaries are
> resizeable hash tables.

I removed some quotes, and noticed that 1 and 1.0 hash the same.
That's a bit unexpected, but I suppose it's not completely
unreasonable.

EG:
$ pythons 'print("%s %s" % (hash(1), hash(1.0)))'
/usr/local/cpython-2.4/bin/python 1 1
/usr/local/cpython-2.5/bin/python 1 1
/usr/local/cpython-2.6/bin/python 1 1
/usr/local/cpython-2.7/bin/python 1 1
/usr/local/cpython-3.0/bin/python 1 1
/usr/local/cpython-3.1/bin/python 1 1
/usr/local/cpython-3.2/bin/python 1 1
/usr/local/cpython-3.3/bin/python 1 1
/usr/local/cpython-3.4/bin/python 1 1
/usr/local/pypy-2.3.1/bin/pypy 1 1
/usr/local/pypy3-2.3.1/bin/pypy 1 1
/usr/local/jython-2.7b2/bin/jython 1 1

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Re: Dict when defining not returning multi value key error Dan Stromberg <drsalists@gmail.com> - 2014-07-31 20:12 -0700
  Re: Dict when defining not returning multi value key error Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-01 04:04 +0000
    Re: Dict when defining not returning multi value key error Ben Finney <ben+python@benfinney.id.au> - 2014-08-01 14:17 +1000
      Re: Dict when defining not returning multi value key error Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-01 13:31 +0000
        Re: Dict when defining not returning multi value key error Chris Angelico <rosuav@gmail.com> - 2014-08-01 23:57 +1000
          Re: Dict when defining not returning multi value key error Marko Rauhamaa <marko@pacujo.net> - 2014-08-01 18:39 +0300
            Re: Dict when defining not returning multi value key error Terry Reedy <tjreedy@udel.edu> - 2014-08-01 17:42 -0400
            Re: Dict when defining not returning multi value key error Chris Angelico <rosuav@gmail.com> - 2014-08-02 09:57 +1000
              Re: Dict when defining not returning multi value key error Marko Rauhamaa <marko@pacujo.net> - 2014-08-02 09:41 +0300
                Re: Dict when defining not returning multi value key error Marko Rauhamaa <marko@pacujo.net> - 2014-08-02 10:06 +0300
                Re: Dict when defining not returning multi value key error Chris Angelico <rosuav@gmail.com> - 2014-08-02 20:58 +1000
            Re: Dict when defining not returning multi value key error Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-02 11:47 +1000
              Re: Dict when defining not returning multi value key error Chris Angelico <rosuav@gmail.com> - 2014-08-02 12:13 +1000

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