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| Subject | Re: enhancement request: make py3 read/write py2 pickle format |
| Date | Wed, 10 Jun 2015 09:38:39 -0400 |
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On Wed, Jun 10, 2015, at 08:08, Marko Rauhamaa wrote:
> You can't serialize/migrate arbitrary objects. Consider open TCP
> connections, open files and other objects that extend outside the Python
> VM. Also objects hold references to each other, leading to a huge
> reference mesh.
>
> For example:
>
> a.buddy = b
> b.buddy = a
> with open("a", "wb") as f: f.write(serialize(a))
> with open("b", "wb") as f: f.write(serialize(b))
>
> with open("a", "rb") as f: aa = deserialize(f.read())
> with open("b", "rb") as f: bb = deserialize(f.read())
> assert aa.buddy is bb
Of course, if you serialize a single dict with e.g. {'a': a, 'b': b},
you can expect (with advanced serialization tools, anyway - I suspect
JSON will just make a mess or exceed maximum recursion depth)
result['a'].buddy is result['b']
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Re: enhancement request: make py3 read/write py2 pickle format Robert Kern <robert.kern@gmail.com> - 2015-06-10 12:22 +0100
Re: enhancement request: make py3 read/write py2 pickle format Marko Rauhamaa <marko@pacujo.net> - 2015-06-10 15:08 +0300
Re: enhancement request: make py3 read/write py2 pickle format random832@fastmail.us - 2015-06-10 09:38 -0400
Re: enhancement request: make py3 read/write py2 pickle format Robert Kern <robert.kern@gmail.com> - 2015-06-10 14:52 +0100
Re: enhancement request: make py3 read/write py2 pickle format Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-06-11 11:30 +1200
Re: enhancement request: make py3 read/write py2 pickle format random832@fastmail.us - 2015-06-10 20:47 -0400
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