python

Python Script Calling Make and Other Utilities

Hi all. I have a python script that invokes the following command: # make After make, it also invokes three other programs. Is there a standard way of telling whether the make command was succesful or not? Right now, if make is successful or unsuccessful, the program still continues to run. I want to raise an error that the make ...

PyQt4 Custom dialog not showing

Hi, i'm working with PyQt4 to make a simple Python GUI app. The situation is the following: i have an QMainWindow displaying a central widget and a QDockWidget containing this custom Widget: class ListTagWidget(QWidget): def __init__(self, parent = None): super(ListTagWidget, self).__init__() addButton ...

python: proper usage of global variable

here's the code! import csv def do_work(): global data global b get_file() samples_subset1() return def get_file(): start_file='thefile.csv' with open(start_file, 'rb') as f: data = list(csv.reader(f)) import collections counter = collections.defaultdict(int) f...

Python: is there a C-like for loop available?

Can I do something like this in Python? for (i = 0; i < 10; i++): if someCondition: i+=1 print i I need to be able to skip some values based on a condition EDIT: All the solutions so far suggest pruning the initial range in one way or another, based on an already known condition. This is not useful for me, so let me explain ...

serving soaplib using isapi_wsgi

Hi, i'm relatively new on python and i'd like to setup a webservice on an IIS server using soaplib and isapi_wsgi. I've written the soaplib web services that works fine as a wsgi server: from wsgiref.simple_server import make_server server = make_server('10.0.0.222', 8080, WebServices()) server.serve_forever() how can i change my soa...

python newbie question: converting code to classes

i have this code: import csv import collections def do_work(): (data,counter)=get_file('thefile.csv') b=samples_subset1(data, counter,'/pythonwork/samples_subset3.csv',500) return def get_file(start_file): with open(start_file, 'rb') as f: data = list(csv.reader(f)) counter = collecti...

html form submission

I'm looking at the html form of an external website (not maintained by myself) in the following format : <form onsubmit="return check(this)" method=post action=address.aspx target=ttPOST> .... </form> I wish to post data to this external website without having to go through the form and pressing submit. Can I simply go to the url 'a...

Matplotlib: interactive plot on a web server

hi, I'm currently using Open Flash Chart 2 on my django website, but I find it insufficiently customizable. (It's great when you want the usual barcharts, piecharts, but what about homemade shapes...). Although it's open source, I don't feel like diving in the Flex code. I'm thinking a lot about matplotlib but the documentation is rathe...

python/win32: post a click event to a window?

I want to simulate a mouse click on a window, but I want to post the click event directly to the window (not by simulating a general mouse click using win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN, 0, 0)). What's the proper way to do it? I've tried the following, but it doesn't seem to have an effect: def MAKELONG(low, high): r...

Can I use Google App Engine for processing data?

Hello, I would like to execute some long running JRuby scripts [ nothing to do with web requests and url fetch ] on Google App Engine. There is a 30 seconds limit on URL Fetch requests. Does the same apply for plain JRuby/Python scripts? If yes, is there a workaround? ...

Python MySQLdb cursor truncating values

I ran into an interesting problem. I have a MySQL database that contains some doubles with very precise decimal values (for example, 0.00895406607247756, 17 decimal places). This is scientific data so this high level of precision is very important. I'm using MySQLdb in Python to select data from the database: cursor.execute("SELECT * F...

Provide Global Access Point to an Instance of an Object

Hello: Imagine a system (Python) where the different parts constantly interact with one instance of a given object. What is the best way to provide a global access point to this instance? So far I can only think of building the (Singleton) instance in __init__.py and import the module as needed: # __init__.py class Thing(object, Singl...

Module "mymodule" does not define a "MyBackend" authentication backend

I'm trying to use a custom authentication backend for a Django project I'm working on. My backend is based on the LDAPBackend found in the article LDAP Authentication in Django with Backends. I'm getting the floowing error when I attempt to log in: ImproperlyConfigured at /admin/ Module "challenge.backends" does not define a "LDAPBack...

python: getting element in a list

def do_work(): medications_subset2(b,['HYDROCODONE','MORPHINE','OXYCODONE']) def medications_subset2(b,drugs_needed): MORPHINE=['ASTRAMORPH','AVINZA','CONTIN','DURAMORPH','INFUMORPH', 'KADIAN','MS CONTIN','MSER','MSIR','ORAMORPH', 'ORAMORPH SR','ROXANOL','ROXANOL 100'] print drugs_needed[1][0] how do i pr...

python http request with token

hi, how and with which python library is it possible to make an httprequest (https) with a user:password or a token? basically the equivalent to curl -u user:pwd https://www.mysite.com/ thank you ...

Suggestions for passing large table between Python and C#

I have a C# application that needs to be run several thousand times. Currently it precomputes a large table of constant values at the start of the run for reference. As these values will be the same from run to run I would like to compute them independently in a simple python script and then just have the C# app import the file at the ...

[Mac] Finding the architectures that Python was built for, but from within Python itself

Essentially I am looking for a way to find the following, but from within Python without having to run system commands: $ file `which python2.7` /Library/.../2.7/bin/python2.7: Mach-O universal binary with 2 architectures /Library/.../2.7/bin/python2.7 (for architecture i386): Mach-O executable i386 /Library/.../2.7/bin/python2.7 (fo...

What is the best way to load a CCITT T.3 compressed tiff using python?

Hey guys, I am trying to load a CCITT T.3 compressed tiff into python, and get the pixel matrix from it. It should just be a logical matrix. I have tried using pylibtiff and PIL, but when I load it with them, the matrix it returns is empty. I have read in a lot of places that these two tools support loading CCITT but not accessing the...

Fork and exit in Python

This code is supposed to try and start a server process and return. If the port was taken, it should say "couldn't bind to that port" and return. If the server started, it should print "Bound to port 51231" and return. But it does not return. import socket from multiprocessing import Process def serverMainLoop(s,t): s.listen(5) ...

Reason for low Pylint ratings of Python standard library code

Hey everyone! A friend told me about Pylint and just out of curiosity, I ran it against some of the standard library modules. To my surprise, the ratings were low. Here are a few runs: os.py Your code has been rated at 3.55/10 random.py Your code has been rated at 4.74/10 I ran it on some more modules and the found the rating to be...