python

Using ManagementClass.Getinstances() from IronPython

I have an IronPython script that looks for current running processes using WMI. The code looks like this: import clr clr.AddReference('System.Management') from System.Management import ManagementClass from System import Array mc = ManagementClass('Win32_Processes') procs = mc.GetInstances() That last line where I call the GetInstances...

django image upload forms

I am having problems with django forms and image uploads. I have googled, read the documentations and even questions ere, but cant figure out the issue. Here are my files my models class UserProfile(User): """user with app settings. """ DESIGNATION_CHOICES=( ('ADM', 'Administrator'), ('OFF', 'Club Official'), ('MEM'...

how to make python load dylib on osx

Hi, Trying to load a shared lib out of the current '.' dir in a unit test on osx. What works on Linux and Netbsd there is a symlink _mymodule.so --> ../.libs/libmymodule.so but on osx, python's import mymodule won't find _mymodule.dylib --> ../.libs/libmymodule.dylib I've tried adding export DYLD_LIBRARY_PATH=.:$DYLD_LIBRARY_PATH ...

Djangobb problem

I've installed Djangobb app on my server (Debian, mod_python) by cloning original source. The only things I've changed is database options in settings.py. All needed components are installed - syncdb query was executed right. But, when I'm trying to enter on my forum, it returns me error: ImproperlyConfigured: Error importing middle...

Pypcap for mac on python 2.6?

How do you end up running pypcap for python 2.6 on a mac? It seems that there hasn't been any new releases since 2.5 or am I just looking in the wrong places? I seem to be unable to install the 2.5 binary with the following error: You cannot install pcap 1.1 on this volume. pcap requires System Python 2.5 to install. ...

Python: Inheritance of a class attribute (list)

Hi everyone, inheriting a class attribute from a super class and later changing the value for the subclass works fine: class Unit(object): value = 10 class Archer(Unit): pass print Unit.value print Archer.value Archer.value = 5 print Unit.value print Archer.value leads to the output: 10 10 10 5 which is just fine: Archer ...

Framework for Implementing REST web service in Django

I'm looking to implement a RESTful interface for a Django application. It is primarily a data-service application - the interface will be (at this point) read-only. The question is which Django toolsets / frameworks make the most sense for this task. I see Django-rest and Django-piston. There's also the option of rolling my own. ...

ping ip's / hostname in app engine

I'm trying to ping an ip address and telnet to some port from an app hosted on app engine. I've tried using http://svn.pylucid.net/pylucid/CodeSnippets/ping.py but for some reason it failing Thanks ...

Newbie Python programmer tangling with Lists.

Here's what I've got so far: # A. match_ends # Given a list of strings, return the count of the number of # strings where the string length is 2 or more and the first # and last chars of the string are the same. # Note: python does not have a ++ operator, but += works. def match_ends(words): counter = 0 for word in words: if len...

How to increment variable names/Is this a bad idea

In Python, if I were to have a user input the number X, and then the program enters a for loop in which the user inputs X values, is there a way/is it a bad idea to have variable names automatically increment? ie: user inputs '6' value_1 = ... value_2 = ... value_3 = ... value_4 = ... value_5 = ... value_6 = ...

What exactly are tuples in Python?

I'm following a couple of Pythone exercises and I'm stumped at this one. # C. sort_last # Given a list of non-empty tuples, return a list sorted in increasing # order by the last element in each tuple. # e.g. [(1, 7), (1, 3), (3, 4, 5), (2, 2)] yields # [(2, 2), (1, 3), (3, 4, 5), (1, 7)] # Hint: use a custom key= function to extract th...

Trouble with this Python newbie exercise. Using Lists and finding if two adjacent elements are the same.

Here's what I got: # D. Given a list of numbers, return a list where # all adjacent == elements have been reduced to a single element, # so [1, 2, 2, 3] returns [1, 2, 3]. You may create a new list or # modify the passed in list. def remove_adjacent(nums): for number in nums: numberHolder = number # +++your code here+++ retur...

Python performance: iteration and operations on nested lists

Problem Hey folks. I'm looking for some advice on python performance. Some background on my problem: Given: A (x,y) mesh of nodes each with a value (0...255) starting at 0 A list of N input coordinates each at a specified location within the range (0...x, 0...y) A value Z that defines the "neighborhood" in count of nodes Increm...

python parallel computing: split keyspace to give each node a range to work on

My question is rather complicated for me to explain, as i'm not really good at maths, but i'll try to be as clear as possible. I'm trying to code a cluster in python, which will generate words given a charset (i.e. with lowercase: aaaa, aaab, aaac, ..., zzzz) and make various operations on them. I'm searching how to calculate, given th...

django admin - adding fields on the fly

Basically I am writing a simple shopping cart. Each item can have multiple prices. (i.e. shirts where each size is priced differently). I would like to have a single price field in my admin panel, where when the first price is entered, an additional price field pops up. However I am kind of at a loss as to how to do this. What would be t...

pyopengl: Could it replace c++ ?

Hi everyone. I'm starting a computer graphics course, and I have to choose a language. Choices are between C++ and Python. I have no problem with C++, python is a work in progress. So i was thinking to go down the python road, using pyopengl for graphics part. I have heard though, that performance is an issue. Is python / pyopengl ma...

Read more numbers in a line in Python

Let say i want to read the integers a, b and c from stdin (in one line, do not need to press return after each number). In c++, i would just do: cin >> a >>b >> c; How to do this in Python ? ...

How to format contour lines from Matplotlib

Hello - I am working on using Matplotlib to produce plots of implicit equations (eg. y^x=x^y). With many thanks to the help I have already received I have got quite far with it. I have used a contour line to produce the plot. My remaining problem is with formatting the contour line eg width, color and especially zorder, where the contour...

How can I merge two lists and sort them working in 'linear' time?

I have this, and it works: # E. Given two lists sorted in increasing order, create and return a merged # list of all the elements in sorted order. You may modify the passed in lists. # Ideally, the solution should work in "linear" time, making a single # pass of both lists. def linear_merge(list1, list2): finalList = [] for item in ...

How App Engine application can get a list of instance developers

How Google App instance can get the list of developers (like in Administration > Developers). Hard-coding developer's email is a bad idea because nothing lasts forever. I would like to get a solution in python (because I don't know java). ...