Is it possible to detect an incoming call to a GSM modem (HUAWEI E160) plugged into the USB port?
Ideally I'd like to find a library for Python. All I need is the caller number, I do not need to answer the call. ...
python
Finding a list of indices from master array using secondary array with non-unique entries
I have a master array of length n of id numbers that apply to other analogous arrays with corresponding data for elements in my simulation that belong to those id numbers (e.g. data[id]). Were I to generate a list of id numbers of length m separately and need the information in the data array for those ids, what is the best method of get...
Python: Define Classes in Packages
I'm learning Python and I have been playing around with packages. I wanted to know the best way to define classes in packages. It seems that the only way to define classes in a package is to define them in __init__.py of that package. Coming from Java, I'd kind of like to define individual files for my classes. Is this a recommended prac...
How to clone a mercurial repository over an ssh connection initiated by fabric when http authorization is required?
I'm attempting to use fabric for the first time and I really like it so far, but at a certain point in my deployment script I want to clone a mercurial repository. When I get to that point I get an error: err: abort: http authorization required My repository requires http authorization and fabric doesn't prompt me for the user and ...
Amazon Autoscaling trigger not working, how do I debug it?
I'm trying to use autoscaling to create new EC2 instances whenever average CPU load on existing instances goes high. Here's the situation: I'm setting up autoscaling using this boto script (with keys and image names removed). http://balti.ukcod.org.uk/~francis/tmp/start_scaling_ptdaemon.nokeys.py I've got min_size set to 2, and the Au...
Google App Engine - update_indexes error
I have a Java app deployed on app engine and I use appcfg.py of the Python SDK to vacuum and update my indexes. Yesterday I first ran vacuum_indexes and that completed successfully - i.e. it en-queued tasks to delete my existing indexes. The next step was probably a mistake on my part - I then ran update_indexes even though my previous...
How to use R-Tree for plotting large number of map markers on google maps
After searching SO and multiple articles I haven't found a solution to my problem. What I am trying to achieve is to load 20,000 markers on Google Maps. R-Tree seems like a good approach but it's only helpful when searching for points within the visible part of the map. When the map is zoomed out it will return all of the points and....
create a class attribute without going through __setattr__
Hello, What I have below is a class I made to easily store a bunch of data as attributes. They wind up getting stored in a dictionary. I override __getattr__ and __setattr__ to store and retrieve the values back in different types of units. When I started overriding __setattr__ I was having trouble creating that initial dicionary in the...
dia python extensions - can you make code that does things based on the diagrams?
While creating some diagrams in Dia using the bpmn sheet I noticed that there's a capability for using python extensions on Dia. They have some examples on their site about doing so. Dia Project What I haven't seen yet (and I'm wondering about) is whether you can generate something code, yaml or xml based on a diagram? For example sa...
python: create a "with" block on several context managers
Suppose you have three objects you acquire via context manager, for instance A lock, a db connection and an ip socket. You can acquire them by: with lock: with db_con: with socket: #do stuff But is there a way to do it in one block? something like with lock,db_con,socket: #do stuff Furthermore, is it possib...
Appengine backreferences - need composite index?
I have a query that is very recently starting to throw: "The built-in indices are not efficient enough for this query and your data. Please add a composite index for this query." I checked the line on which this exception is being thrown, and the problem query is this one: count = self.vote_set.filter("direction =", 1).count() This...
Python as an end user script in a python app
I have an app written in python. I want to give my users the ability to manipulate the apps objects by allowing them to run their own scripts. They are likely to make errors in their scripts. If there is an error I want to ensure that the app doesn't stop running. I'd like to embed a debugger in my app to help them debug their scripts. ...
Statistics: combinations in Python
I need to compute combinatorials (nCr) in Python but cannot find the function to do that in 'math', 'numyp' or 'stat' libraries. Something like a function of the type: comb = calculate_combinations(n, r) I need the number of possible combinations, not the actual combinations, so itertools.combinations does not interest me. Finally, I...
Python module being reloaded for each request with django and mod_wsgi
I have a variable in init of a module which get loaded from the database and takes about 15 seconds. For django development server everything is working fine but looks like with apache2 and mod_wsgi the module is loaded with every request (taking 15 seconds). Any idea about this behavior? Update: I have enabled daemon mode in mod ws...
using wild card when listing directories in python
how can I use wild cars like '*' when getting a list of files inside a directory in Python? for example, I want something like: os.listdir('foo/*bar*/*.txt') which would return a list of all the files ending in .txt in directories that have bar in their name inside of the foo parent directory. how can I do this? thanks. ...
Is there a performance gain from defining routes in app.yaml versus one large mapping in a WSGIApplication in AppEngine?
Scenario 1 This involves using one "gateway" route in app.yaml and then choosing the RequestHandler in the WSGIApplication. app.yaml - url: /.* script: main.py main.py from google.appengine.ext import webapp class Page1(webapp.RequestHandler): def get(self): self.response.out.write("Page 1") class Page2(webapp.Reque...
How to select random image of specific size using Django / Python?
I've been using this little snippet to select random images. However I would like to change it to select only images of a certain size. I'm running into trouble checking against image size. If I use get_image_dimensions() I need to use a conditional statement, which then requires that I allow exceptions. So, I guess I need some pointe...
PyQt4 plugin in c++ application
How is it posible to load python script as plugin in qt based application? The basic idea would be to make a class in c++ class b { virtual void method1(); virtual void method2(); } and 'somehow' inherit it in python like class c(b): def method1: #do something def method2: #do something I need to ...
List all form related errors in django
Hi, Is there a direct way of listing out 'all' form errors in Django templates. I'd like to list out both field and non-field errors and any other form errors. I've found out how to do this on a per-field basis but as said earlier, I'd like to list out everything. The method I'm using doesn't seem to list out everything. {% for error...
Invoking a superclass's class methods in Python
I am working on a Flask extension that adds CouchDB support to Flask. To make it easier, I have subclassed couchdb.mapping.Document so the store and load methods can use the current thread-local database. Right now, my code looks like this: class Document(mapping.Document): # rest of the methods omitted for brevity @classmethod de...