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python Programming Glossary: deferredQueue remote calls to a Python Twisted perspective broker? http://stackoverflow.com/questions/2861858/queue-remote-calls-to-a-python-twisted-perspective-broker option that might help with this is twisted.internet.defer.DeferredSemaphore . This is the asynchronous version of the normal counting.. releases are required. Here's an example of using DeferredSemaphore to run ten asynchronous operations but to run at most.. three of them at once from twisted.internet.defer import DeferredSemaphore gatherResults from twisted.internet.task import deferLater..
http://stackoverflow.com/questions/5195427/twisted-conch-filetransfer surprising interface from twisted.internet.defer import Deferred from twisted.conch.scripts.cftp import ClientOptions from twisted.conch.client.connect.. host options 'port' port conn SFTPConnection conn._sftp Deferred auth SSHUserAuthClient user options conn connect host port options.. For the moment though ignore SFTPConnection and that _sftp Deferred. ClientOptions is basically just a fancy dictionary that connect..
Twisted: Making code non-blocking http://stackoverflow.com/questions/6117587/twisted-making-code-non-blocking function in a thread pool. Conveniently this API returns a Deferred which will eventually fire with the return value of the function.. with a Failure if the function raises an exception . These Deferreds look like any other and as far as the code using them is concerned..
Asychronous Programming in Python Twisted http://stackoverflow.com/questions/80617/asychronous-programming-in-python-twisted like voodoo is the management of callbacks for example Deferred . If you're used to writing code that runs in a straight line..
Python loop counter in a for loop http://stackoverflow.com/questions/1185545/python-loop-counter-in-a-for-loop a few PEPs related to loop counters but they were either deferred or rejected PEP 212 and PEP 281 . This is a simplified example..
design of python: why is assert a statement and not a function? http://stackoverflow.com/questions/13390401/design-of-python-why-is-assert-a-statement-and-not-a-function out. The evaluation of the second optional parameter is deferred until if when the assertion fails. Awkward to do that with functions..
python tilde unary operator as negation numpy bool array http://stackoverflow.com/questions/13600988/python-tilde-unary-operator-as-negation-numpy-bool-array which would provide a more general solution but has been deferred. It appears that the current situation while awkward is not..
Python: How can I use Twisted as the transport for SUDS? http://stackoverflow.com/questions/2671228/python-how-can-i-use-twisted-as-the-transport-for-suds username self.username password self.password deferred threads.deferToThread api.login deferred.addCallbacks handleResult.. self.password deferred threads.deferToThread api.login deferred.addCallbacks handleResult handleError reactor.run This works..
High-concurrency counters without sharding http://stackoverflow.com/questions/2769934/high-concurrency-counters-without-sharding My questions With respect to #1 Running memcache.decr in a deferred transactional task seems like overkill. If memcache.decr is..
http://stackoverflow.com/questions/3025921/is-there-a-performance-gain-from-defining-routes-in-app-yaml-versus-one-large-ma components or applications. For example remote_api and deferred both have their own handlers. It's perfectly reasonable therefore..
Creating Dependency Graphs in Python http://stackoverflow.com/questions/4160746/creating-dependency-graphs-in-python a function that you want to trace. You will see gaps where deferred comes into picture but that can be worked out. You will not..
App Engine: Is time.sleep() counting towards my quotas? http://stackoverflow.com/questions/4254678/app-engine-is-time-sleep-counting-towards-my-quotas do instead is create a task for each geocode check out the deferred library . You'd want to specify a queue for this task then just..
Twisted: Making code non-blocking http://stackoverflow.com/questions/6117587/twisted-making-code-non-blocking the two function calls asynchronously using the reactor deferreds architecture so that the result of the short calc gets returned.. from some other webserver to which my webserver would do a deferred getPage but what if it's just a local function i.e. can Twisted..
Where can I find good python Twisted framework documentation, blog entries, articles, etc? [closed] http://stackoverflow.com/questions/649029/where-can-i-find-good-python-twisted-framework-documentation-blog-entries-arti useless in my opinion. I recommend starting with the deferred docs online and making absolutely sure you understand what asynchronous.. sure you understand what asynchronous means and what deferreds are for. The best online docs that I've found are on the official..
Flask vs webapp2 for Google App Engine http://stackoverflow.com/questions/6774371/flask-vs-webapp2-for-google-app-engine handlers for your framework of your choice. For example deferred uses a webapp handler. To use it in a pure Flask view using.. and werkzeug.Response you'll need to implement deferred for it like I did here for tipfy . The same happens for other..
SQLAlchemy: selecting which columns of an object in a query http://stackoverflow.com/questions/6977658/sqlalchemy-selecting-which-columns-of-an-object-in-a-query you can establish various columns on the mapped class as deferred either configurationally or using options http www.sqlalchemy.org.. http www.sqlalchemy.org docs orm mapper_config.html#deferred column loading there's an old ticket in trac for something called..
Using Twisted's twisted.web classes, how do I flush my outgoing buffers? http://stackoverflow.com/questions/776631/using-twisteds-twisted-web-classes-how-do-i-flush-my-outgoing-buffers import defer def wait seconds result None Returns a deferred that will be fired later d defer.Deferred reactor.callLater..
Appengine, performance degradation with python27 http://stackoverflow.com/questions/8341112/appengine-performance-degradation-with-python27 application It is quite simple online shop. There are some deferred tasks with pdf generation however these don't affect overall..
Complex foreign key constraint in SQLAlchemy http://stackoverflow.com/questions/8394177/complex-foreign-key-constraint-in-sqlalchemy 2 6 'var3_op1' 3 END The NOT NULL constraint cannot be deferred it is enforced immediately. But the foreign key constraint can.. egg problem. In this edited scenario both foreign keys are deferred . You can enter variables and options in arbitrary sequence... actions other than the NO ACTION check cannot be deferred even if the constraint is declared deferrable. No ACTION is..
custom dict that allows delete during iteration http://stackoverflow.com/questions/9023078/custom-dict-that-allows-delete-during-iteration a subclass of dict . class dd_dict dict # the dd is for deferred delete _deletes None def __delitem__ self key if key not in..
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