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Search found 145 results on 6 pages for 'pylons'.

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• With sqlalchemy how to dynamically bind to database engine on a per-request basis

  - by Peter Hansen

  I have a Pylons-based web application which connects via Sqlalchemy (v0.5) to a Postgres database. For security, rather than follow the typical pattern of simple web apps (as seen in just about all tutorials), I'm not using a generic Postgres user (e.g. "webapp") but am requiring that users enter their own Postgres userid and password, and am…

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• A simple Python deployment problem - a whole world of pain

  - by Evgeny

  We have several Python 2.6 applications running on Linux. Some of them are Pylons web applications, others are simply long-running processes that we run from the command line using nohup. We're also using virtualenv, both in development and in production. What is the best way to deploy these applications to a production server? In development…

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• I'm searching for a messaging platform (like XMPP) that allows tight integration with a web applicat

  - by loxs

  Hi, At the company I work for, we are building a cluster of web applications for collaboration. Things like accounting, billing, CRM etc. We are using a RESTfull technique: For database we use CouchDB Different applications communicate with one another and with the database via http. Besides, we have a single sign on solution, so that when…

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• Eventlet or gevent or Stackless + Twisted, Pylons, Django and SQL Alchemy

  - by Khorkrak

  We're using Twisted extensively for apps requiring a great deal of asynchronous io. There are some cases where stuff is cpu bound instead and for that we spawn a pool of processes to do the work and have a system for managing these across multiple servers as well - all done in Twisted. Works great. The problem is that it's hard to bring new…

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• Fetch Facebook ID with PyFacebook, "Session key is required"

  - by ensnare

  I'm trying to fetch the logged in user's ID with Facebook + PyFacebook via: #Establish connection to Facebook via API f = Facebook(config['app_conf']['pyfacebook.apikey'], config['app_conf']['pyfacebook.secret']) #Get the current Facebook ID facebook_id = f.users.getLoggedInUser() But I keep getting the error: …

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• Python MySQLdb placeholders syntax

  - by ensnare

  I'd like to use placeholders as seen in this example: cursor.execute (""" UPDATE animal SET name = %s WHERE name = %s """, ("snake", "turtle")) Except I'd like to have the query be its own variable as I need to insert a query into multiple databases, as in: query = """UPDATE animal SET name = %s WHERE…

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• Proper way in Python to raise errors while setting variables

  - by ensnare

  What is the proper way to do error-checking in a class? Raising exceptions? Setting an instance variable dictionary "errors" that contains all the errors and returning it? Is it bad to print errors from a class? Do I have to return False if I'm raising an exception? Just want to make sure that I'm doing things right. …

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• Proper way to set class variables

  - by ensnare

  I'm writing a class to insert users into a database, and before I get too far in, I just want to make sure that my OO approach is clean: class User(object): def setName(self,name): #Do sanity checks on name self._name = name def setPassword(self,password): #Check password length > 6…

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• Clear all class variables between instances

  - by ensnare

  This is probably a stupid question, but what's the best way to clear class variables between instances? I know I could reset each variable individually in the constructor; but is there a way to do this in bulk? Or am I doing something totally wrong that requires a different approach? Thanks for helping ... class…

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• SECURITY Flaws in this design for User authentication.

  - by Shao

  SECURITY Flaws in this design for User authentication. From: http://wiki.pylonshq.com/display/pylonscookbook/Simple+Homegrown+Authentication Note: a. Project follows the MVC pattern. b. Only a user with a valid username and password is allowed submit something. Design: a. Have a base controller from…

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• Infrastructure for a "news-feed"

  - by ensnare

  I'd like to offer a news-feed like feature for users of our website. When the user logs in, he is shown a list of the latest updates across various areas of the site. I'm afraid that this is going to be difficult to scale. What are some networking / database topologies that can support a scalable…

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• Proper way to set object instance variables

  - by ensnare

  I'm writing a class to insert users into a database, and before I get too far in, I just want to make sure that my OO approach is clean: class User(object): def setName(self,name): #Do sanity checks on name self._name = name def setPassword(self,password): #Check…

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• Fabfile with support for sqlalchemy-migrate deployments?

  - by Chris Reid

  I have database migrations (with sqlalchemy-migrate) working well in my dev environment. However, I'm a little stumped about how to integrate this into my deployment process. I'm using fabric for deployment but having some trouble scripting the migrations part. The path to the to migrations…

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• Setting up repoze.who with make_redirecting_plugin

  - by Timmy

  my file is: [plugin:form] use = repoze.who.plugins.form:make_redirecting_plugin login_form_url = /account/signin login_handler_path = /account/login logout_handler_path = /account/logout [identifiers] plugins = form;browser auth_tkt i created a form on /account/signin, but it…

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• Efficient way in Python to add an element to a comma-separated string

  - by ensnare

  I'm looking for the most efficient way to add an element to a comma-separated string while maintaining alphabetical order for the words: For example: string = 'Apples, Bananas, Grapes, Oranges' addition = 'Cherries' result = 'Apples, Bananas, Cherries, Grapes, Oranges' Also, a way to…

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• Efficient way in Python to remove an element from a comma-separated string

  - by ensnare

  I'm looking for the most efficient way to add an element to a comma-separated string while maintaining alphabetical order for the words: For example: string = 'Apples, Bananas, Grapes, Oranges' subtraction = 'Bananas' result = 'Apples, Grapes, Oranges' Also, a way to do this but…

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• Are there any concerns I should have about storing a Python Lock object in a Beaker session?

  - by Jack

  There is a certain page on my website where I want to prevent the same user from visiting it twice in a row. To prevent this, I plan to create a Lock object (from Python's threading library). However, I would need to store that across sessions. Is there anything I should watch…

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• Unable to open images with Python's Image.open()

  - by ensnare

  My code reads: import Image def generateThumbnail(self, width, height): """ Generates thumbnails for an image """ im = Image.open(self._file) When I call this function, I get an error: ? AttributeError: type object 'Image' has no attribute 'open' However in…

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• How do i put id in formbuild's start_with_layout?

  - by Timmy

  formbuild's start_with_layout generates this code <form action="link" method="post"><table> how do i add id to it? i wanna add some js things that adds elements

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• What is the most efficient way to populate class attributes with a row from a database query?

  - by ensnare

  Looking to have a database query set all the instance variables in a class: Example: def populate(self, if): #Perform mysql query self._name = row['name'] self._email = row['email'] ... What's the fastest way to do this? Or is this not recommended (with a…

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• Efficient way to combine results of two database queries.

  - by ensnare

  I have two tables on different servers, and I'd like some help finding an efficient way to combine and match the datasets. Here's an example: From server 1, which holds our stories, I perform a query like: query = """SELECT author_id, title, text FROM stories …

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• My login controller doesn't work. Problem with fetching username.

  - by misterwebz

  Currently my login controller doesn't work because i can't seem to fetch the username and password. I'm currently using something like this: form_username = str(request.params.get('username')) db_user = meta.Session.query(User).filter_by(username=form_username) if db_user…

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• Efficient way to build a MySQL update query in Python

  - by ensnare

  I have a class variable called attributes which lists the instance variables I want to update in a database: attributes = ['id', 'first_name', 'last_name', 'name', 'name_url', 'email', 'password', 'password_salt', 'picture_id'] Each of the class attributes…

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• Can the Django urls.py system be turned into Pylon's Routes?

  - by alex

  How can that be done? Thanks

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• Mako "Missing parentheses in %def"

  - by michaelmior

  In trying to add a cached section to a Mako template, I get the error listed in the above question. Adding () to the end gets rid of the error, but I see no content on my page. Any help is appreciated! <%def name="test" cached="True" cache_timeout="60"…

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