On 07/18/2017 01:07 AM, dieter wrote:
"Jan Gosmann" writes:
[...]
fn = load_pyfile('fn.py')['fn']
[...]
"pickle" (and "cpickle") are serializing functions as so called
"global"s, i.e. as a module reference together with a name.
This means, they cannot handle functions computed in a module
(as
"Jan Gosmann" writes:
> today I came across some weird behaviour (a bug?) in Python 2.7.13 (on
> Linux) with the cPickle module. The pickle module works and so does
> the pickle module in Python 3.
>
> I have a file fn.py with a minimal function definition:
>
> ```
> def fn():
> pass
> ```
>
On 24/06/2012 00:17, Steven D'Aprano wrote:
On Sat, 23 Jun 2012 19:14:43 +0100, Rotwang wrote:
The problem is that if the object was
pickled by the module run as a script and then unpickled by the imported
module, the unpickler looks in __main__ rather than mymodule for the
object's class, and
On Sat, 23 Jun 2012 19:14:43 +0100, Rotwang wrote:
> The problem is that if the object was
> pickled by the module run as a script and then unpickled by the imported
> module, the unpickler looks in __main__ rather than mymodule for the
> object's class, and doesn't find it.
Possibly the solutio
On 23/06/2012 18:31, Dave Angel wrote:
On 06/23/2012 12:13 PM, Peter Otten wrote:
Rotwang wrote:
Hi all, I have a module that saves and loads data using cPickle, and
I've encountered a problem. Sometimes I want to import the module and
use it in the interactive Python interpreter, whereas some
On 23/06/2012 17:13, Peter Otten wrote:
Rotwang wrote:
Hi all, I have a module that saves and loads data using cPickle, and
I've encountered a problem. Sometimes I want to import the module and
use it in the interactive Python interpreter, whereas sometimes I want
to run it as a script. But obj
On 06/23/2012 12:13 PM, Peter Otten wrote:
> Rotwang wrote:
>
>> Hi all, I have a module that saves and loads data using cPickle, and
>> I've encountered a problem. Sometimes I want to import the module and
>> use it in the interactive Python interpreter, whereas sometimes I want
>> to run it as a
Rotwang wrote:
> Hi all, I have a module that saves and loads data using cPickle, and
> I've encountered a problem. Sometimes I want to import the module and
> use it in the interactive Python interpreter, whereas sometimes I want
> to run it as a script. But objects that have been pickled by runn
En Tue, 17 May 2011 15:26:53 -0300, Neal Becker
escribió:
Gabriel Genellina wrote:
En Tue, 17 May 2011 08:41:41 -0300, Neal Becker
escribió:
What does it mean when cPickle.load says:
RuntimeError: invalid signature
Is binary format not portable?
Are you sure that's the actual error mess
En Tue, 17 May 2011 15:26:53 -0300, Neal Becker
escribió:
Gabriel Genellina wrote:
En Tue, 17 May 2011 08:41:41 -0300, Neal Becker
escribió:
What does it mean when cPickle.load says:
RuntimeError: invalid signature
Is binary format not portable?
Are you sure that's the actual error mess
Gabriel Genellina wrote:
> En Tue, 17 May 2011 08:41:41 -0300, Neal Becker
> escribió:
>
>> What does it mean when cPickle.load says:
>> RuntimeError: invalid signature
>>
>> Is binary format not portable?
>
> Are you sure that's the actual error message?
> I cannot find such message anywhere i
En Tue, 17 May 2011 08:41:41 -0300, Neal Becker
escribió:
What does it mean when cPickle.load says:
RuntimeError: invalid signature
Is binary format not portable?
Are you sure that's the actual error message?
I cannot find such message anywhere in the sources.
The pickle format is quite po
On Wed, Sep 8, 2010 at 6:55 PM, Paul Rubin wrote:
> Carl Banks writes:
>> Since Python 2.7 is released, Python 2.5 is no longer accepting bug
>> fixes, only security fixes. So be aware.
>
> Segfaults should be treated as security holes unless there's convincing
> reasons that no exploit is possi
In article ,
Thomas Jollans wrote:
>
>Also, Python 2.5 is frightfully old. [...]
"Frightfully"??? I'm sure plenty of people are still using Python 2.3
in production environments (certainly my last job did as of 1.5 years
ago, and I would be mildly surprised if they upgraded by now).
--
Aahz (
Carl Banks writes:
> Since Python 2.7 is released, Python 2.5 is no longer accepting bug
> fixes, only security fixes. So be aware.
Segfaults should be treated as security holes unless there's convincing
reasons that no exploit is possible. So the bug should be reported
against 2.5 as well as l
On Sep 8, 11:58 am, Kenneth Dombrowski wrote:
> Hi all,
>
> Before creating an issue @ bugs.python.org I wanted to run the
> following by everyone
>
> We are having a difficult time with what looks like a cPickle issue
> when given a data structure containing >15 nested dictionaries, but
> only wh
On Wednesday 08 September 2010, it occurred to Kenneth Dombrowski to exclaim:
> Environment is FreeBSD 8, Python 2.5.5
Which architecture?
Also, Python 2.5 is frightfully old. There's not really any problem with still
using it, but nobody's maintaining it upstream, so don't bother reporting a
b
On 3/08/2010 17:01, Peter Otten wrote:
> You can only pickle instances of classes that are reachable by the import
> system as only the qualified name of the class is stored, not the bytecode
> to generate it. Move your class out of the function into the global module
> scope and you should be
Benedict Verheyen wrote:
> i get the following error when trying to set data in the cache of a django
> application. The error is however a python error as it involves pickling
> and i can reproduce it in a shell.
> The error i get is this:
> cPickle.PicklingError: Can't pickle :
> attribute looku
On Apr 17, 10:13 am, Reckoner wrote:
> I have a large class that is a child of list. I need to pickle it, but
> it's not working. For example, I have reduced it to the following:
>
> class Mylist(list):
> def __init__(self,x=[]):
> list.__init__(self,x)
>
> and I cannot even get this t
On Apr 17, 11:16 am, Piet van Oostrum wrote:
> > Reckoner (R) wrote:
> >R> I have a large class that is a child of list. I need to pickle it, but
> >R> it's not working. For example, I have reduced it to the following:
> >R> class Mylist(list):
> >R> def __init__(self,x=[]):
> >R> l
> Reckoner (R) wrote:
>R> I have a large class that is a child of list. I need to pickle it, but
>R> it's not working. For example, I have reduced it to the following:
>R> class Mylist(list):
>R> def __init__(self,x=[]):
>R> list.__init__(self,x)
>R> and I cannot even get this to pi
Reckoner wrote:
> On Apr 17, 10:42 am, Peter Otten <__pete...@web.de> wrote:
>> Reckoner wrote:
>> > I have a large class that is a child of list. I need to pickle it, but
>> > it's not working. For example, I have reduced it to the following:
>>
>> > class Mylist(list):
>> > def __init__(self
On Apr 17, 10:42 am, Peter Otten <__pete...@web.de> wrote:
> Reckoner wrote:
> > I have a large class that is a child of list. I need to pickle it, but
> > it's not working. For example, I have reduced it to the following:
>
> > class Mylist(list):
> > def __init__(self,x=[]):
> > list.__init__
Reckoner wrote:
> I have a large class that is a child of list. I need to pickle it, but
> it's not working. For example, I have reduced it to the following:
>
> class Mylist(list):
> def __init__(self,x=[]):
> list.__init__(self,x)
>
> and I cannot even get this to pickle right.
>
>>> w=My
Correct, 2.6.1 does not complain.
If only I could upgrade! The workaround is obvious and I'll do that.
Thanks for your help.
--
Zachary Burns
(407)590-4814
Aim - Zac256FL
Production Engineer (Digital Overlord)
Zindagi Games
On Thu, Jan 8, 2009 at 11:34 AM, Carl Banks wrote:
> On Jan 8, 12:27
On Jan 8, 12:27 pm, "Zac Burns" wrote:
> Thanks for your patience waiting for me to isolate the problem.
>
> | Package
> --__init__.py ->empty
> --Package.py ->empty
> --Module.py
> import cPickle
> class C(object):
> pass
> def fail():
> return cPickle.dumps(C(), -1
Thanks for your patience waiting for me to isolate the problem.
| Package
--__init__.py ->empty
--Package.py ->empty
--Module.py
import cPickle
class C(object):
pass
def fail():
return cPickle.dumps(C(), -1)
import Package.Module
Package.Module.fail()
The failure s
En Mon, 05 Jan 2009 23:04:30 -0200, Zac Burns escribió:
I have a module that attempts to pickle classes defined in that module.
I get an error of the form:
PicklingError: Can't pickle : import
of module Module.SubModule failed
when using cPickle (protocol -1, python version 2.5.1).
The module
Le Thursday 04 September 2008 13:08:59 Gerhard Häring, vous avez écrit :
> gopal mishra wrote:
> > I have 3 objects and want to save in one pickle file.
> >
> > I used cPickle to dump 3 objects in a pkl file
> >
> > i.e cPickle.dump(object1, fileobject, -1)
> >
> > cPickle.dump(o
gopal mishra wrote:
I have 3 objects and want to save in one pickle file.
I used cPickle to dump 3 objects in a pkl file
i.e cPickle.dump(object1, fileobject, -1)
cPickle.dump(object2, fileobject, -1)
cPickle.dump(object3, fileobject, -1)
I have chang
Eric Jonas <[EMAIL PROTECTED]> writes:
>> Try gc.disable() before loading the pickle, and gc.enable() after.
>>
>> > Is cPickle's behavior known to be O(n^2)?
>>
>> No, but the garbage collector's sometimes is.
>
> Wow, that totally fixed it -- we went from 1200 seconds to 60
> seconds.
60 seco
On Thu, 2008-06-12 at 20:57 +0200, Hrvoje Niksic wrote:
> Eric Jonas <[EMAIL PROTECTED]> writes:
>
> > I've done some benchmarking while attempting to serialize my (large)
> > graph data structure with cPickle; I'm seeing superlinear performance
> > (plotting it seems to suggest n^2 where n is th
If you are getting to the point where your data is large enough to
really care about the speed of cPickle, then maybe its time you moved
past pickles for your storage format? 2.5 includes sqlite, so you
could persist them in a nice, indexed table or something. Just a
suggestion.
On Jun 12
Eric Jonas <[EMAIL PROTECTED]> writes:
> I've done some benchmarking while attempting to serialize my (large)
> graph data structure with cPickle; I'm seeing superlinear performance
> (plotting it seems to suggest n^2 where n is the number of nodes of my
> graph), in the duration of the pickle.dum
"Jeff Poole" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> So when something tries to retrieve .__getstate__, it returns an empty
> string. If I tell it to raise an AttributeException instead, then I
> get this message:
>
> TypeError: a class that defines __slots__ without definin
Jeff Poole wrote:
> Good idea. Well, I did that, and I found out that the object causing
> problems is a ParseResults object (a class from PyParsing) and that the
> __getstate__ member is in fact an empty string (''). I'm not sure
> where this leaves me... The PyParsing code clearly never crea
Good idea. Well, I did that, and I found out that the object causing
problems is a ParseResults object (a class from PyParsing) and that the
__getstate__ member is in fact an empty string (''). I'm not sure
where this leaves me... The PyParsing code clearly never creates such
a member and my cod
At Thursday 16/11/2006 21:48, Jeff Poole wrote:
File "/usr/lib/python2.4/pickle.py", line 313, in save
rv = reduce(self.proto)
File "/usr/lib/python2.4/copy_reg.py", line 83, in _reduce_ex
dict = getstate()
TypeError: 'str' object is not callable
Someway, self.__getstate__ is a st
To clutter this up with yet another message, this is what happens if I
use pickle instead of cPickle. Same error, but it has more of a stack
trace so someone more advanced than myself might be able to pick out
what is going amiss.
Traceback (most recent call last):
File "./generateTools.py", li
Oh, and I suppose I should provide some version information:
$ python
Python 2.4.3 (#1, May 18 2006, 07:40:45)
[GCC 3.3.3 (cygwin special)] on cygwin
Jeff Poole wrote:
> This is going to be a pretty vague message because it involves a large
> block of code I'd rather avoid posting. Basically,
Arrghh, I forgot about case sensitivities sorry about that
guys, I'm so used to not having to think about that. Thanks for having
patience with me and thanks for the explanations.
import cPickle
hehe... damn... tricky getting used to that :-)
Thanks again,
Marcus
--
http://mail.python.
Marcus Lowland wrote:
> Hello, I'm fairly new to python and have read about and wanted to
begin
> experimenting with cpickle. As I understand, this should be a native
> module in the python library. I have python 2.3 and now just
installed
> 2.4, but am not able to import or find cpickle.py in any
Marcus Lowland wrote:
> Thanks Marc, but... I've searched the file directories for cpickle (not
> specifying file type) and only came up with test_cpickle.py. Also, if
> cPickle.so were the correct file and existed in my lib then the
> following would not happen.
>
import cpickle
>
> Traceb
Thanks Marc, but... I've searched the file directories for cpickle (not
specifying file type) and only came up with test_cpickle.py. Also, if
cPickle.so were the correct file and existed in my lib then the
following would not happen.
>>> import cpickle
Traceback (most recent call last):
File ""
In <[EMAIL PROTECTED]>, Marcus Lowland
wrote:
> Hello, I'm fairly new to python and have read about and wanted to begin
> experimenting with cpickle. As I understand, this should be a native
> module in the python library. I have python 2.3 and now just installed
> 2.4, but am not able to import o
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