python

How to transfer url parameters to repoze custom predicate checkers

I would like to create a repoze custom predicate checker that is capable to access url parameters and validate something. But I would like to use allow_only to set this permission checker in all the controller's scope. Something like: class MyController(BaseController): allow_only = All(not_anonymous(msg=l_(u'You must be logged on'...

canvas in python trouble

when using canvas in python i am trying to make it so that when i click on a square and a circle appears the computer knows that first there was an empty square and now there is a circle in that square. basically i want these squares to have the same properties as Buttons do. and also what are tags in canvas? ...

Query crashes MS Access

THE TASK: I am in the process of migrating a DB from MS Access to Maximizer. In order to do this I must take 64 tables in MS ACCESS and merge them into one. The output must be in the form of a TAB or CSV file. Which will then be imported into Maximizer. THE PROBLEM: Access is unable to perform a query that is so complex it seems, as it ...

Display form in Django not based on Models/Form

My view calls some backend classes which need some user input. When user input is required, i halt processing and store the questions into the session - request.session['questions']. request.session['questions'] is a list of dictionaries. e.g. request.session['question'] = [] request.session['question'].append({'question' : 'Whats your ...

Dajaxice Autodiscover in Django App (cannot import name dajaxice_autodiscover)

Hi, I was following the directions at http://wiki.github.com/jorgebastida/django-dajaxice/installation to install Dajaxice for simple AJAX support and I ran into an error I can't quite figure out. The lines: from dajaxice.core import dajaxice_autodiscover #dajaxice_autodiscover() in urls.py seem to be causing an error (cannot import...

Communicate multiple times with a process without breaking the pipe?

Hello, it's not the first time I'm having this problem and its really bugging me. Whenever I open a pipe using the Python subprocess module, I can only communicate with it once, as the documentation specifies: Read data from stdout and stderr, until end-of-file is reached proc = sub.Popen("psql -h darwin -d main_db".split(),stdin=sub.PI...

Jython saying "No visible constructors for class"

I have a jython servlet as part of a large application running in tomcat5. I tested a few Spring Framework classes and create the objects in the Jython servlet. When I try to create objects of classes in the application I catch an Exception message "No visible constructors for class". These java classes do have a public constructor class...

How to speed-up python nested loop?

I'm performing a nested loop in python that is included below. This serves as a basic way of searching through existing financial time series and looking for periods in the time series that match certain characteristics. In this case there are two separate, equally sized, arrays representing the 'close' (i.e. the price of an asset) and...

get n records at a time from a temporary table

I have a temporary table with about 1 million entries. The temporary table stores the result of a larger query. I want to process these records 1000 at a time, for example. What's the best way to set up queries such that I get the first 1000 rows, then the next 1000, etc.? They are not inherently ordered, but the temporary table just has...

create temporary table from cursor

Is there any way, in PostgreSQL accessed from Python using SQLObject, to create a temporary table from the results of a cursor? Previously, I had a query, and I created the temporary table directly from the query. I then had many other queries interacting w/ that temporary table. Now I have much more data, so I want to only process 10...

Python: Sending a variable to another script.

I'm new to python and kind of been chucked in the deep end at work. If i had a script which has creates a list such as below: test = 'string' l = [] for i in test: l.append(i) print l How would i send that this to another python script? ...

Does Python Django support custom SQL and denormalized databases with no Foreign Key relationships?

I've just started learning Python Django and have a lot of experience building high traffic websites using PHP and MySQL. What worries me so far is Python's overly optimistic approach that you will never need to write custom SQL and that it automatically creates all these Foreign Key relationships in your database. The one thing I've lea...

Extending Django Flatpages to accept template tags

I use django flatpages for a lot of content on our site, I'd like to extend it to accept django template tags in the content as well. I found this snippet but after much larking about I couldn't get it to work. Am I correct in assuming that you would need too "subclass" the django flatpages app to get this to work? Is this best way of d...

How fast are App Engine db.get(keys) and A.all(keys_only=True).filter('b =', b).fetch(1000)?

A db.get() of 50 keys seems to take me 5-6 seconds. Is that normal? What is the time a function of? I also did a A.all(keys_only=True).filter('b =', b).fetch(1000) where A.b is a ReferenceProperty. I did 50 such round trips to the datastore, with different values of b, and the total time was only 3-4 seconds. How is this possible? db.g...

Reboot windows machines at a certain time of day and automatically login with Python

I know how to reboot machines remotely, so that's the easy part. However, the complexity of the issue is trying to setup the following. I'd like to control machines on a network for after-hours use such that when users logoff and go home, or shutdown their computers, whatever, python or some combination of python + windows could restart ...

Finding the intersection of two vector equations.

I've been trying to solve this and I found an equation that gives the possibility of zero division errors. Not the best thing: v1 = (a,b) v2 = (c,d) d1 = (e,f) d2 = (h,i) l1: v1 + λd1 l2: v2 + µd2 Equation to find vector intersection of l1 and l2 programatically by re-arranging for lambda. (a,b) + λ(e,f) = (c,d) + µ(h,i) a + λe = c +...

Tkinter after that survives clock rewinding.

I noticed that in my version of Tkinter, the after() call does not survive system clock rewinding. If the after(x, func) was called, and the system clock was rewinded, func will be called only after the clock returned to its time before the rewind + x milliseconds. I assume this is because Tkinter uses the system-clock instead of the "...

Assignment in python for loop possible?

I have a dictionary d (and a seperate sorted list of keys, keys). I wanted the loop to only process entries where the value is False - so i tried the following: for key in keys and not d[key]: #do foo I suppose my understanding of python sytax is not what i thought it was - because the assignment doesnt suppose to have happened above...

appcfg.py: error: no such option: --dump on google-app-engine

i follow this article :http://code.google.com/intl/en/appengine/docs/python/tools/uploadingdata.html and want to download all data from my app , but when i use the next code,it show error: D:\zjm_demo\app>appcfg.py --dump --app_id=zjm1126 --url=http://zjm1126.appspot.c om/remote_api --filename=a.csv Usage: appcfg.py [options] <action>...

python: sending information between two scripts

I have two Python scripts in two different locations and cannot be moved. What is the best way to send information between the two scripts? say for example in script1.py i had a string e.g. x = 'teststring' then i need variable 'x' passed to script2.py, which saves the variable 'x' to a text file? Any ideas? ...