In this blog article they use the construct: @measured def some_func(): #... # Presumably outputs something like "some_func() is finished in 121.333 s" somewhere This @measured directive doesn't seem to work with raw python. What is it? UPDATE: I see from Triptych that @something is valid, but is where can I find @measured,...
I am trying to use Python's ctypes library to access some methods in the scanning library SANE. This is my first experience with ctypes and the first time I have had to deal with C datatypes in over a year so there is a fair learning curve here, but I think even without that this particular declaration would be troublesome: extern SANE...
I'd like to write a script that interacts with my DB using a Django app's model. However, I would like to be able to run this script from the command line or via cron. What all do I need to import to allow this? ...
The ECMA standard defines a hidden, internal property [[Call]], which, if implemented, mean the object is callable / is a function. In Python, something similar takes place, except that you can override it yourself to create your own callable objects: >>> class B: ... def __call__(self, x,y): print x,y ... >>> inst = B() >>> inst(1...
I'm using Python to infinitely iterate over a list, repeating each element in the list a number of times. For example given the list: l = [1, 2, 3, 4] I would like to output each element two times and then repeat the cycle: 1, 1, 2, 2, 3, 3, 4, 4, 1, 1, 2, 2 ... I've got an idea of where to start: def cycle(iterable): if not has...
How do you or together all values of a list in Python? I'm thinking something like: or([True, True, False]) or if it was possible: reduce(or, [True, True, False]) ...
We're developing a Python web service and a client web site in parallel. When we make an HTTP request from the client to the service, one call consistently raises a socket.error in socket.py, in read: (104, 'Connection reset by peer') When I listen in with wireshark, the "good" and "bad" responses look very similar: Because of the s...
When debugging in PHP I frequently find it useful to simply stick a var_dump($foo, $bar, ...) in my code to show me the the what a variable is, what is value is, and the same for anything that it contains. What is a good python equivalent for this? I have seen several things in my Google searching that are somewhat equivalent, but noth...
More specifically, I'm trying to check if given string (a sentence) is in Turkish. I can check if the string has Turkish characters such as Ç, Ş, Ü, Ö, Ğ etc. However that's not very reliable as those might be converted to C, S, U, O, G before I receive the string. Another method is to have the 100 most used words in Turkish and check...
Some time ago I saw a Mono application with colored output, probably because of it's log system, because all the messages were standardized. Now, Python has the logging module, and it let you specify a lot of options or customize it entirely, so I'm imagining that something like that would be possible too with Python, however I could not...
I'm having some troubles updating a row in a MySQL db. Here is the code I'm trying to run: import MySQLdb conn=MySQLdb.connect(host="localhost", user="root", passwd="pass", db="dbname") cursor=conn.cursor() cursor.execute("UPDATE compinfo SET Co_num=4 WHERE ID=100") cursor.execute("SELECT Co_num FROM compinfo WHERE ID=100") results = ...
We have a web application that takes user inputs or database lookups to form some operations against some physical resources. The design can be simply presented as following diagram: user input <=> model object <=> database storage validations are needed with request coming from user input but NOT when coming from database lookup hits ...
Hi, I just wanted to try to build a project with django. Therefore I have a (basic) question on how to manage such a project. Since I cannot find any guidelines or so on how to split a project into applications. Let's take a kind of SO as an example. Which applications would you use? I'd say there should be the applications "users" and ...
I'm trying to pass information to a python page via the url. I have the following link text: "<a href='complete?id=%s'>" % (str(r[0])) on the complete page, I have this: import cgi def complete(): form = cgi.FieldStorage() db = MySQLdb.connect(user="", passwd="", db="todo") c = db.cursor() c.execute("delete from tasks...
So, looking for a mysql-db-lib that is compatible with py3k/py3.0/py3000, any ideas? google turned up nothing. ...
Alright, I'm toying around with converting a PIL image object back and forth to a numpy array so I can do some faster pixel by pixel transformations than PIL's PixelAccess object would allow. I've figured out how to place the pixel information in a useful 3D numpy array by way of: pic = Image.open("foo.jpg") pix = numpy.array(pic.getda...
My problem is very similar to eight queens puzzle. I've got 2-dimensional array (N x N) that for example, looks like this: 0,0,0,0,1 y 0,0,0,0,0 | 0,0,0,0,0 V 0,0,0,1,0 0,0,0,0,0 x-> I'm checking horizontally, vertically and diagonally for occurrences of 1 \,0,|,0,/ 0,\,|,/,0 -,-,1,-,- 0,/,|,\,0 /,0,|,0,\ I'm thinking about storin...
I want to send a custom "Accept" header in my request when using urllib2.urlopen(..). How do I do that? ...
I'm looking for a way to convert numbers to string format, dropping any redundant '.0' The input data is a mix of floats and strings. Desired output: 0 --> '0' 0.0 --> '0' 0.1 --> '0.1' 1.0 --> '1' I've come up with the following generator expression, but I wonder if there's a faster way: (str(i).rstrip('.0') if i else '0' for...
I have a small project I want to try porting to Python 3 - how do I go about this? I have made made the code run without warnings using python2.6 -3 (mostly removing .has_key() calls), but I am not sure of the best way to use the 2to3 tool. Use the 2to3 tool to convert this source code to 3.0 syntax. Do not manually edit the output!...