How To Create Per-Request Singleton in Pylons?

Posted by dave mankoff on Stack Overflow See other posts from Stack Overflow or by dave mankoff
Published on 2010-05-11T15:31:36Z Indexed on 2010/05/11 15:34 UTC
Read the original article Hit count: 405

Filed under:

python

|

pylons

|

singleton

In our Pylons based web-app, we're creating a class that essentially provides some logging functionality. We need a new instance of this class for each http request that comes in, but only one per request.

What is the proper way to go about this? Should we just create the object in middleware and store in in request.environ? Is there a more appropriate way to go about this?

© Stack Overflow or respective owner

Related posts about python

unmet dependencies in Ubuntu 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I tried today to install a dvb-card on my Ubuntu 12.04 (Linux blauhai-linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ). The installation failed with an error. After that, i tried to install python (it was already installed but i got this error): linux:~$… >>> More
How can I get sikuli-ide to work?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I installed sikuli-ide with sudo apt-get install sikuli-ide Everything was fine until I tried to start it from the terminal. I typed sikuli-ide But the only response I got was [info] locale: en_US The application was not started, furthermore there is no desktop file and sikuli-ide does not… >>> More
Getting PATH right for python after MacPorts install

as seen on Super User - Search for 'Super User'
I can't import some python libraries (PIL, psycopg2) that I just installed with MacPorts. I looked through these forums, and tried to adjust my PATH variable in $HOME/.bash_profile in order to fix this but it did not work. I added the location of PIL and psycopg2 to PATH. I know that Terminal is… >>> More
call python with system() in R to run a python script emulating the python console

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to pass a chunk of Python code to Python in R with something like system('python ...'), and I'm wondering if there is an easy way to emulate the python console in this case. For example, suppose the code is "print 'hello world'", how can I get the output like this in R? >>> print… >>> More
Python - Calling a non python program from python?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am currently struggling to call a non python program from a python script. I have a ~1000 files that when passed through this C++ program will generate ~1000 outputs. Each output file must have a distinct name. The command I wish to run is of the form: program_name -input -output -o1 -o2… >>> More

Related posts about pylons

Logging in worker threads spawned from a pylons application does not seem to work

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a pylons application where, under certain cirumstances I want to spawn multiple worker threads to process items in a queue. Right now we aren't making use of a ThreadPool (would be ideal, but we'll add that in later). The main problem is that the worker threads logging does not get written… >>> More
Pylons FormEncode @validate decorator pass parameters into re-render action

as seen on Stack Overflow - Search for 'Stack Overflow'
I am attempting to use the validate decorator in Pylons with FormEncode and I have encountered an issue. I am attempting to validate a form on a controller action that requires parameters, and if the validation fails, the parameters aren't passed back in when the form is re-rendered. Here's an example… >>> More
How to set cookies with redirect in Pylons

as seen on Stack Overflow - Search for 'Stack Overflow'
In light of the cookie-handling bugs affecting Safari and Chrome (see this thread), and Pylons implementation of redirect_to as an exception, is it possible to reliably set a tracking cookie and redirect at the same time? Is the META refresh method looked down upon? >>> More
Disable browser caching in pylons

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm have an action /json that returns json from the server. Unfortunately in IE, the browser likes to cache this json. How can I make it so that this action doesn't cache? >>> More
Deploying Pylons with Nginx reverse proxy?

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there a tutorial on how to deploy Pylons with Nginx? I've been able to start nginx and then serve pylons to :8080 with paster serve development.ini However, I can't seem to do other stuff as pylons locks me into that serve mode. If I try to CTRL+Z out of pylons serving to do other stuff on my… >>> More