If I gather correctly pickling an object will pickle its entire hierarchy,
but what if there are certain types of objects anywhere within the hierarchy
that I don't want included in the serialization? What do I do to exclude
them? Thanks. 5 1742
On Sep 14, 10:53 am, "inhahe" <inh...@gmail.c omwrote:
If I gather correctly pickling an object will pickle its entire hierarchy,
but what if there are certain types of objects anywhere within the hierarchy
that I don't want included in the serialization? What do I do to exclude
them? Thanks.
If your class defines a __getstate__ method, it is expected to return
the pickled state of the entire class. You can for example del those
items from self.__dict__ that you don't want pickled and then return
dumps(self).
inhahe wrote:
If I gather correctly pickling an object will pickle its entire hierarchy,
but what if there are certain types of objects anywhere within the hierarchy
that I don't want included in the serialization? What do I do to exclude
them? Thanks.
Pickle uses the methods __getstate__, __setstate__ and __reduce__ /
__reduce_ex__ to access certain aspects of an object like e.g. the
state. You can find more information in the pickle docs.
Christian
Michael Palmer wrote:
If your class defines a __getstate__ method, it is expected to return
the pickled state of the entire class. You can for example del those
items from self.__dict__ that you don't want pickled and then return
dumps(self).
FYI:
__getstate__ is ignored when __reduce__ is available.
Christian
En Sun, 14 Sep 2008 12:06:44 -0300, Michael Palmer <m_********@yah oo.ca>
escribió:
On Sep 14, 10:53 am, "inhahe" <inh...@gmail.c omwrote:
>If I gather correctly pickling an object will pickle its entire hierarchy, but what if there are certain types of objects anywhere within the hierarchy that I don't want included in the serialization? What do I do to exclude them? Thanks.
If your class defines a __getstate__ method, it is expected to return
the pickled state of the entire class. You can for example del those
items from self.__dict__ that you don't want pickled and then return
dumps(self).
note: __getstate__ should return the *values* to be pickled, not the
pickled state; else you end doing the work twice.
And "del those items from self.__dict__" isn't a good idea, in general;
I'd use a *copy* of __dict__ instead.
--
Gabriel Genellina
On Sep 14, 9:53*am, "inhahe" <inh...@gmail.c omwrote:
If I gather correctly pickling an object will pickle its entire hierarchy,
but what if there are certain types of objects anywhere within the hierarchy
that I don't want included in the serialization? *What do I do to exclude
them? * Thanks.
Are you picturing a custom pickler object? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: gong |
last post by:
hi
i would like to pickle a lambda; according to the library docs in 2.3,
i believe this shouldnt be possible, since a lambda is not a function
defined at the top level of a module (?)
however, upon google searching for "python lambda pickle" i find 2
posts, one including gvr, which apparently demonstrate that this was
being attempted and even suggest that it is feasible. has this become
available yet, or will it be soon?
|
by: Thomas Reichelt |
last post by:
Moin,
short question: is there any language combining the syntax, flexibility and
great programming experience of Python with static typing? Is there a
project to add static typing to Python?
Thank you,
--
greetz tom
|
by: Kirk Strauser |
last post by:
I have a module that defines a Search class and a SearchResult class. I use
these classes by writing other modules that subclass both of them as needed
to interface with particular search engines.
My problem is that Search defines a method (called automatically by __del__)
to save its results between invocations:
def _saveresults(self):
self._oldresults = self._results
file = open(self._storefile(), 'w')
|
by: Maxim |
last post by:
Greetings,
In my C# project, I'm using a third-party Opensource library... in
source code form. I mean no assemblies, just pure source code. It
allows me to add new application-specific functionality to that
library, finetune it, and see how things work.
Well, the problem is that the library is quite huge, so the
application's size gets not really acceptable - I'm developping for an
|
by: Brad |
last post by:
I'm not one to rant or flame....so please excuse me while I do so for this
once. I've now spent a bit of time working with VS2005 beta 2 to see how it
functions for web development, especially how our current extensive number
of .Net 1.1 web apps convert to it. After a week's time I dont's mind the
converted app code that was broken and had to be changed, due to
deprecation, new framework classes (some of which have names identical to...
| |
by: Gabe Matteson |
last post by:
How would I go about excluding a list of specific directories in a listbox
from being queried using the following code? Any ideas? Thank you.
Private Sub rAllStats(ByVal sDir As String)
Try
Dim objFolder As New System.IO.DirectoryInfo(sDir)
Dim objFile As System.IO.FileInfo() = objFolder.GetFiles
|
by: uniko |
last post by:
Hello,
I have a table with multiple fields, which describe several products.I want to exclude all the records of a specific product when it appears at the beginning or at the end of the table. Let's say, that the table is similar to the following, I want to exclude all products A from the beginning and the end. I have been told that I should use cursors but i am not very sure how to do it.
thank you all in advance for your answers.
e.g.
A ...
|
by: Simon Brooke |
last post by:
I'm struggling to understand what 'exclude-result-prefixes' does and is
for; the language of the standard
http://www.zvon.org/xxl/XSLTreference/W3C/xslt.html#literal-result-element
is not exactly easy to follow. What I assumed it was supposed to do is mark
specific prefixes as not to be printed in the generated document, but that
does not work with any of the XSL tools I'm currently working with (Xalan
1.2.2 and 2.7.0, xsltproc...
|
by: ITSimTech |
last post by:
I'm trying to learn how/do two things here:
1) If the user searches for "Data" ($searchtext = "Data") the output should also include the fourth record because Field1 contains "all".
2) But the output of this same search should also exclude any records where Field1 contains "info" ($searchtext = "info"). You can see by the textsearch template that I have 3 case conversion variables that can be used to to include/exclude "All", "all", "ALL",...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
| |
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
| |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |