I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what rows are selected wil...
When using regular expressions we generally, if not always use them to extract some kind of information. What I need is to replace the match value with some other value... Right now I'm doing this... def getExpandedText(pattern, text, replaceValue): """ One liner... really ugly but it's only used in here. """ retu...
We're using a third-party middleware product that allows us to write code in an embedded Python interpreter, and which exposes an API that we can call into. Some of these API calls allow us to load various kinds of file, and the loading code is implemented in C. File loading happens in a separate thread, and calls back into Python when t...
How do I authenticate against AD using Python + LDAP. I'm currently using the python-ldap library and all it is producing is tears. I can't even bind to perform a simple query: import sys import ldap Server = "ldap://my-ldap-server" DN, Secret, un = sys.argv[1:4] Base = "dc=mydomain,dc=co,dc=uk" Scope = ldap.SCOPE_SUBTREE Filter = "...
In Java you can do File.listFiles() and receive all of the files in a directory. You can then easily recurse through directory trees. Is there an analogous way to do this in Python? ...
I want to be able to list only the directories inside some folder. This means I don't want filenames listed, nor do I want additional sub-folders. Let's see if an example helps. In the current directory we have: >>> os.listdir(os.getcwd()) ['cx_Oracle-doc', 'DLLs', 'Doc', 'include', 'Lib', 'libs', 'LICENSE.txt', 'mod_p ython-wininst.lo...
My production system occasionally exhibits a memory leak I have not been able to reproduce in a development environment. I've used a Python memory profiler (specifically, Heapy) with some success in the development environment, but it can't help me with things I can't reproduce, and I'm reluctant to instrument our production system with...
I have created a brand new project in XCode and have the following in my AppDelegate.py file: from Foundation import * from AppKit import * class MyApplicationAppDelegate(NSObject): def applicationDidFinishLaunching_(self, sender): NSLog("Application did finish launching.") statusItem = NSStatusBar.systemStatusBar().stat...
How do I create a file-like object (same duck time as File) with the contents of a string? ...
class Foo(models.Model): title = models.CharField(max_length=20) slug = models.SlugField() Is there a built-in way to get the slug field to autopopulate based on the title? Perhaps in the Admin and outside of the Admin. ...
Let's say I have a class that has a member called data which is a list. I want to be able to initialize the class with, for example, a filename (which contains data to initialize the list) or with an actual list. What's your technique for doing this? Do you just check the type by looking at __class__? Is there some trick I might be...
Where X is any programming language (C#, Javascript, Lisp, Perl, Ruby, Scheme, etc) which supports some flavour of closures. Some limitations are mentioned in the Closures in Python (compared to Ruby's closures), but the article is old and many limitations do not exist in modern Python any more. Seeing a code example for a concrete l...
I've written code for communication between my phone and comp thru TCP sockets. When I type out the code line by line in the interactive console it works fine. However, when i try running the script directly through filebrowser.py it just wont work. I'm using Nokia N95. Is there anyway I can run this script directly without using filebro...
I have a Python application in a strange state. I don't want to do live debugging of the process. Can I dump it to a file and examine its state later? I know I've restored corefiles of C programs in gdb later, but I don't know how to examine a Python application in a useful way from gdb. (This is a variation on my question about debu...
Is there a way to get the key (or id) value of a db.ReferenceProperty, without dereferencing the actual entity it points to? I have been digging around - it looks like the key is stored as the property name preceeded with an _, but I have been unable to get any code working. Examples would be much appreciated. Thanks. EDIT: Here is ...
The __debug__ variable is handy in part because it affects every module. If I want to create another variable that works the same way, how would I do it? The variable (let's be original and call it 'foo') doesn't have to be truly global, in the sense that if I change foo in one module, it is updated in others. I'd be fine if I could set...
Hi, I'd like to how to upgrade the default python installation(2.5.2) supplied with ubuntu 8.04 to python 2.6rc2. I'd like to make 2.6 the default python version on the system and migrate all the other useful installed python libraries installed on 2.5.2 to python 2.6rc2. Please let me know how I can achieve this. Thanks Dirk ...
I need a compact representation of an array of booleans, does Python have a builtin bitfield type or will I need to find an alternate solution? ...
I've been coding in PHP for almost ten years, but I've lately become interested in Python. What Python book would you recommend? ...
I would like to drag and drop my data file onto a Python script and have it process the file and generate output. The Python script accepts the name of the data file as a command-line parameter, but Windows Explorer doesn't allow the script to be a drop target. Is there some kind of configuration that needs to be done somewhere for this...