I've had to do some introspection in python and it wasn't pretty: name = sys._getframe(1).f_code name = "%s:%d %s()" %(os.path.split(name.co_filename)[1],name.co_firstlineno,name.co_name) To get something like foo.py:22 bar() blah blah In our debugging output. I'd ideally like to prepend anything to stderr with this sort o...
I have a method in my Python code that returns a tuple - a row from a SQL query. Let's say it has three fields: (jobId, label, username) For ease of passing it around between functions, I've been passing the entire tuple as a variable called 'job'. Eventually, however, I want to get at the bits, so I've been using code like this: (jobId...
I want to open a folder window, in the appropriate file manager, from within a cross-platform (windows/mac/linux) Python application. On OSX, I can open a window in the finder with os.system('open "%s"' % foldername) and on Windows with os.startfile(foldername) What about unix/linux? Is there a standard way to do this or do I have...
I am learning Python for a class now, and we just covered tuples as one of the data types. I read the Wikipedia page on it, but, I could not figure out where such a data type would be useful in practice. Can I have some examples, perhaps in Python, where an immutable set of numbers would be needed? How is this different from a list? ...
Does anyone know of a FOSS Python lib for generating Identicons? I've looked, but so far I haven't had much luck. ...
Is there a reasonable way to extract plain text from a Word file that doesn't depend on COM automation? (This is a a feature for a web app deployed on a non-Windows platform - that's non-negotiable in this case.) Antiword seems like it might be a reasonable option, but it seems like it might be abandoned. A Python solution would be id...
What is the best way to implement the singleton pattern in Python? It seems impossible to declare the constructor private or protected as is normally done with the Singleton pattern... ...
The Python docs say: re.MULTILINE: When specified, the pattern character '^' matches at the beginning of the string and at the beginning of each line (immediately following each newline)... By default, '^' matches only at the beginning of the string... So what's going on when I get the following unexpected result? >>> import re >>...
Is there a way using Python's standard library to easily determine (i.e. one function call) the last day of a given month? If the standard library doesn't support that, does the dateutil package support this? ...
I'm trying to write a bzr post-commit hook for my private bugtracker, but I'm stuck at the function signature of post_commit(local, master, old_revno, old_revid, new_revno, mew_revid). How can I extract the commit message for the branch from this with bzrlib in Python? ...
In the django template language, you can use {% url [viewname] [args] %} to generate a url to a specific view with parameters. How can you programatically do the same in python code? What I need is to create a list of menu items, each item has name, url, and active (whether it's the current page or not). This because it will be a lot cl...
Using PyObjC, you can use Python to write Cocoa applications for OS X. Can I write native iPhone apps using Python and if so, how? ...
I'm a firm believer of the heretic thought of tight coupling between the backend and frontend: I want existing, implied knowledge about a backend to be automatically made use of when generating user interfaces. E.g., if a VARCHAR column has a maximum with of 20 characters, there GUIs should automatically constrain the user from typing mo...
Let's say you want to save a bunch of files somewhere, for instance in BLOBs. Let's say you want to dish these files out via a web page and have the client automatically open the correct application/viewer. Assumption: The browser figures out which application/viewer to use by the mime-type (content-type?) header in the HTTP response. ...
I'd like to do some server-side scripting using Python. But I'm kind of lost with the number of ways to do that. It starts with the do-it-yourself CGI approach and it seems to end with some pretty robust frameworks that would basically do all the job themselves. And a huge lot of stuff in between, like web.py, Pyroxide and Django. Wha...
Can you please tell me how much is (-2) % 5 ? According to my python interpreter is 3, but do you have a wise explanation for this ? I've read that in some languages the result can be machine-dependent, but I'm not sure though. Thanks for your help. ...
I'd like to get back into some web development after primarily working on native applications, and I'm looking for advice on how to set up my web development "stack" on my local Mac. Ideally I'd like a setup that is easy to setup and maintain, but remains flexible and extensible. In particular, I plan to use Python, so mod_python is ...
That's it. If you want to document a function or a class, you put a string just after the definition. For instance: def foo(): """This function does nothing.""" pass But what about a module? How can I document what a file.py does? ...
How do you insert invisible watermarks in images for copyright purposes? I'm looking for a python library. What algorithm do you use? What about performance and efficiency? ...
What is the best way to layout a large django project? The tutuorials provide simple instructions for setting up apps, models, and views, but there is less information about how apps and projects should be broken down, how much sharing is allowable/necessary between apps in a typical project (obviously that is largely dependent on the p...