Q_Id int64 337 49.3M | CreationDate stringlengths 23 23 | Users Score int64 -42 1.15k | Other int64 0 1 | Python Basics and Environment int64 0 1 | System Administration and DevOps int64 0 1 | Tags stringlengths 6 105 | A_Id int64 518 72.5M | AnswerCount int64 1 64 | is_accepted bool 2
classes | Web Development int64 0 1 | GUI and Desktop Applications int64 0 1 | Answer stringlengths 6 11.6k | Available Count int64 1 31 | Q_Score int64 0 6.79k | Data Science and Machine Learning int64 0 1 | Question stringlengths 15 29k | Title stringlengths 11 150 | Score float64 -1 1.2 | Database and SQL int64 0 1 | Networking and APIs int64 0 1 | ViewCount int64 8 6.81M |
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14,071,294 | 2012-12-28T14:50:00.000 | 12 | 0 | 0 | 0 | python,django,python-2.7 | 14,071,410 | 2 | true | 1 | 0 | Check settings.py for django.contrib.staticfiles in INSTALLED_APPS and django.core.context_processors.static in TEMPLATE_CONTEXT_PROCESSORS | 2 | 4 | 0 | So I'm trying to run collectstatic to push some files to AWS, but I keep getting a "unknown command" error. When running manage.py help I get a list of subcommands, and sure enough collectstatic is not there. I have looked also in the installed apps part of settings.py and the staticfiles app is installed. Python is ve... | Collectstatic command is not available in Django 1.4 | 1.2 | 0 | 0 | 3,442 |
14,071,294 | 2012-12-28T14:50:00.000 | 4 | 0 | 0 | 0 | python,django,python-2.7 | 18,474,545 | 2 | false | 1 | 0 | For those for whom the accepted answer did not work, doing
python manage.py collectstatic
worked while
python django-admin.py collecstatic did not.
Maybe that can help some. | 2 | 4 | 0 | So I'm trying to run collectstatic to push some files to AWS, but I keep getting a "unknown command" error. When running manage.py help I get a list of subcommands, and sure enough collectstatic is not there. I have looked also in the installed apps part of settings.py and the staticfiles app is installed. Python is ve... | Collectstatic command is not available in Django 1.4 | 0.379949 | 0 | 0 | 3,442 |
14,072,428 | 2012-12-28T16:17:00.000 | 0 | 0 | 1 | 0 | python,c,concurrency,pbkdf2,commoncrypto | 14,350,237 | 2 | false | 0 | 0 | Lacking documentation or source code, one option is to build a test app with say 10 threads looping on calls to CCKeyDerivationPBKDF with a random selection from say 10 different sets of arguments with 10 known results.
Each thread checks the result of a call to make sure it is what is expected. Each thread should also... | 2 | 0 | 0 | I'm using CCKeyDerivationPBKDF to generate and verify password hashes in a concurrent environment and I'd like to know whether it it thread safe. The documentation of the function doesn't mention thread safety at all, so I'm currently using a lock to be on the safe side but I'd prefer not to use a lock if I don't have ... | Is CCKeyDerivationPBKDF thread safe? | 0 | 0 | 0 | 223 |
14,072,428 | 2012-12-28T16:17:00.000 | 1 | 0 | 1 | 0 | python,c,concurrency,pbkdf2,commoncrypto | 14,394,303 | 2 | true | 0 | 0 | After going through the source code of the CCKeyDerivationPBKDF() I find it to be "thread unsafe". While the code for CCKeyDerivationPBKDF() uses many library functions which are thread-safe(eg: bzero), most user-defined function(eg:PRF) and the underlying functions being called from those user-defined functions, are p... | 2 | 0 | 0 | I'm using CCKeyDerivationPBKDF to generate and verify password hashes in a concurrent environment and I'd like to know whether it it thread safe. The documentation of the function doesn't mention thread safety at all, so I'm currently using a lock to be on the safe side but I'd prefer not to use a lock if I don't have ... | Is CCKeyDerivationPBKDF thread safe? | 1.2 | 0 | 0 | 223 |
14,073,030 | 2012-12-28T17:04:00.000 | 1 | 0 | 0 | 0 | python,sql,django,redis,feed | 14,074,169 | 3 | false | 1 | 0 | You said redis? Everything is better with redis.
Caching is one of the best ideas in software development, no mather if you use Materialized Views you should also consider trying to cache those, believe me your users will notice the difference. | 2 | 4 | 0 | Need a way to improve performance on my website's SQL based Activity Feed. We are using Django on Heroku.
Right now we are using actstream, which is a Django App that implements an activity feed using Generic Foreign Keys in the Django ORM. Basically, every action has generic foreign keys to its actor and to any obje... | Good way to make a SQL based activity feed faster | 0.066568 | 1 | 0 | 499 |
14,073,030 | 2012-12-28T17:04:00.000 | 1 | 0 | 0 | 0 | python,sql,django,redis,feed | 14,201,647 | 3 | true | 1 | 0 | Went with an approach that sort of combined the two suggestions.
We created a master list of every action in the database, which included all the information we needed about the actions, and stuck it in Redis. Given an action ID, we can now do a Redis look up on it and get a dictionary object that is ready to be retur... | 2 | 4 | 0 | Need a way to improve performance on my website's SQL based Activity Feed. We are using Django on Heroku.
Right now we are using actstream, which is a Django App that implements an activity feed using Generic Foreign Keys in the Django ORM. Basically, every action has generic foreign keys to its actor and to any obje... | Good way to make a SQL based activity feed faster | 1.2 | 1 | 0 | 499 |
14,074,805 | 2012-12-28T19:40:00.000 | 1 | 0 | 1 | 0 | python,configobj | 14,075,363 | 6 | false | 0 | 0 | Configobj is for reading and writing ini-style config files. You are apparently trying to use it to write bash scripts. That's not something that is likely to work.
Just write the bash-script like you want it to be, perhaps using a template or something instead.
To make ConfigParses not write the spaces around the = pr... | 1 | 2 | 0 | Simple question. It is possible to make configobj to not put a space before and after the '=' in a configuration entry ?
I'm using configobj to read and write a file that is later processed by a bash script, so putting an antry like:
VARIABLE = "value"
breaks the bash script, it needs to always be:
VARIABLE="value"
Or... | Make python configobj to not put a space before and after the '=' | 0.033321 | 0 | 0 | 1,931 |
14,075,972 | 2012-12-28T21:22:00.000 | 1 | 0 | 0 | 1 | python,networking,twisted | 14,077,687 | 1 | true | 0 | 0 | If the datagram socket is connected, it can receive ICMP Port Unreachable messages via the Sockets API, which presumably maps into calling this method. Note that I am not speaking of the TCP connect operation here, but the Sockets connect() method, which can be called on a UDP socket, and which presumably maps into som... | 1 | 5 | 0 | This is a method of DatagramProtocol class in Twisted. As I understand UDP protocol doesn't guarantee that someone is listening on the given port even using ConnectedDatagramProtocol.
Can someone explain to me, when this method is called and how I suppose to check if there is someone listening to my transmission using... | What does ConnectionRefused do? | 1.2 | 0 | 0 | 102 |
14,076,674 | 2012-12-28T22:38:00.000 | 2 | 0 | 0 | 0 | python,tkinter | 14,077,404 | 4 | false | 0 | 1 | Tkinter does not have a widget that can render a web page. | 1 | 4 | 0 | So my App needs to be able to open a single webpage(and it must be from the internet and not saved) in it, and specifically I'd like to use the Tkinter GUI toolkit since it's the one i'm most comfortable with. On top of that though, I'd like to be able to generate events in the window(say a mouse click) but without act... | Using Tkinter to open a webpage | 0.099668 | 0 | 0 | 8,422 |
14,076,819 | 2012-12-28T22:56:00.000 | 2 | 0 | 1 | 0 | python,xml-parsing,document-imaging | 14,077,019 | 1 | true | 0 | 0 | Parsing refers to reading a series of tokens and matching rules in a grammar. If you can specify your problem in this way you can write the grammar using pyparsing.
If what you are interested in doing is extracting the structure of an XML document, then you can use the standard python module xml.etree.ElementTree. Als... | 1 | 0 | 0 | Given XML objects of many classes (say, types of document images), I need to generate some outputs depending on the class of the object, and a complex set of mathematical rules relating the contents of the XML file.
What is the generic name of this task (parsing?) and what is the easiest way to encode separate rules fo... | How to encode parsing rules in python? | 1.2 | 0 | 0 | 176 |
14,077,092 | 2012-12-28T23:29:00.000 | 0 | 0 | 1 | 0 | python,opencv,dependencies,webcam | 40,101,267 | 1 | false | 0 | 0 | Camera 0 points to your default camera driver, camera 1 to your secondary driver, camera 2 to your tertiary and so on.
Which means that even with a single camera hardware, you can have multiple drivers that can access it.
Let's assume that your primary cam driver (probably provided by HP) was corrupted during the unins... | 1 | 0 | 0 | I am running windows 7 64 bit (32 bit python) on an hp touchsmart 600. A while ago I uninstalled then reinstalled opencv 2.4.3. In between the uninstalling and reinstalling I uninstalled some programs I thought weren't being used. Now opencv only displays a black screen when before opencv was able to access my webcam c... | opencv - camera 0 not working | 0 | 0 | 0 | 1,556 |
14,078,640 | 2012-12-29T04:15:00.000 | 1 | 0 | 0 | 1 | python,django,google-app-engine | 14,079,702 | 1 | true | 1 | 0 | You can use Django 1.4 with CloudSQL.
If you're using the HRD, you'd want to use django-nonrel (the successor to App Engine Helper).
While django-nonrel works, the documentation is a bit lacking at the moment. | 1 | 0 | 0 | I would like to remove dependencies on the old-style App Engine Helper for Django in my Python-based App-Engine application . At the same time, I would like to upgrade to Python2.7 and Django1.4. I have a few questions about the upgrade process:
1) The new App Engine SDK (Version 1.7.4) states that Django is fully supp... | Google App Engine - Upgrading from App Engine Helper | 1.2 | 0 | 0 | 91 |
14,078,762 | 2012-12-29T04:41:00.000 | 1 | 0 | 0 | 0 | python,django,import | 14,078,822 | 2 | false | 1 | 0 | from catalog.models import Product is fine, and i think it's better than the example. Because if you want to use the app, you have to change every single import statement where you use your project name. Don't do from myproject.myapp.models import MyModel, it's a bad practice, if you're sure that the models you importi... | 1 | 0 | 0 | I am going through another django tutorial and I noticed for the imports the author uses
from project.app.file import item but this doesnt work unless I do
from app.file import item
Example:
Authors version:
from ecomstore.catalog.models import Product
which doesnt work
Error: ImportError: No module named catalog.mod... | django import project.app vs import app | 0.099668 | 0 | 0 | 345 |
14,079,327 | 2012-12-29T06:33:00.000 | 3 | 0 | 0 | 0 | python,django | 14,079,421 | 2 | false | 1 | 0 | Django 1.5 is going to be released very soon. You can start using now. | 1 | 4 | 0 | I'm new to Django (coming from PHP Yii), and I want to learn it by developing some web site. Should I write it on Django 1.4 or 1.5?
If you had to develop a new (production) web site now, would you use Django 1.5? | Is it time to use Django 1.5? | 0.291313 | 0 | 0 | 1,665 |
14,079,587 | 2012-12-29T07:13:00.000 | 7 | 0 | 1 | 0 | python,integer | 14,079,631 | 4 | false | 0 | 0 | There's no need. The interpreter handles allocation behind the scenes, effectively promoting from one type to another as needed without you doing anything explicit. | 1 | 3 | 0 | I want to differentiate between 32-bit and 64-bit integers in Python. In C it's very easy as we can declare variables using int_64 and int_32. But in Python how do we differentiate between 32-bit integers and 64-bit integers? | How to determine whether the number is 32-bit or 64-bit integer in Python? | 1 | 0 | 0 | 5,901 |
14,079,650 | 2012-12-29T07:23:00.000 | 2 | 0 | 1 | 0 | c#,java,c++,python | 14,079,956 | 1 | false | 0 | 0 | It is theoretically possible. But in practice, it would be a lot of work, and the result would not be a small program. In fact, it would be roughly equivalent in size and functionality / complexity to a standard JVM. Which leads to the obvious point that it is unlikely to be worth the effort.
I suggest that you ju... | 1 | 0 | 0 | Instead of needing something like Java, is there a way I could make a program that has a small piece of machine code to compile itself? | Is There Any Way To Make A Self JIT Compiled Program? | 0.379949 | 0 | 0 | 121 |
14,093,870 | 2012-12-30T19:26:00.000 | 4 | 0 | 0 | 0 | javascript,python,webview,webkit,web-crawler | 14,094,212 | 1 | true | 1 | 1 | There is no real way to determine if that page is fully loaded.
One method is to determine the amount of time since the last request. However, some pages will make repeated requests continually. This is common with tracking scripts and some ad scripts.
What I would do is use a set amount of time after the web view ha... | 1 | 6 | 0 | I am using python webkit.WebView and gtk to crawl a web page. However, the web page is kind of dynamically loaded by javascript.
The WebView "load-finished" event is not sufficient to handle this. Is there any indicator/event to let me know that the page is really fully loaded even the content produced by javascript?
... | How do I know a page is really fully loaded? | 1.2 | 0 | 0 | 218 |
14,094,224 | 2012-12-30T20:10:00.000 | 2 | 0 | 1 | 1 | python,python-3.x,exec | 14,094,933 | 3 | false | 0 | 0 | import sys,
change "sys.path" by appending the path during run time,then import the module that will help | 1 | 7 | 0 | Let's say I have a file foo.py, and within the file I want to execute a file bar.py. But, bar.py isn't in the same directory as foo.py, it's in a subdirectory call baz. Will execfile work? What about os.system? | How to run a Python file not in directory from another Python file? | 0.132549 | 0 | 0 | 6,750 |
14,096,057 | 2012-12-31T00:10:00.000 | 0 | 0 | 0 | 0 | python,sqlite | 14,096,117 | 4 | false | 0 | 0 | Verify if sqlite exist in PATH and what are privileges for file test.db | 1 | 1 | 0 | I just got python and typing:
sqlite test.db
..into the shell, but I get a syntax error....what have I missed? | Trying to use sqlite with python shell | 0 | 0 | 0 | 4,471 |
14,096,829 | 2012-12-31T02:34:00.000 | 3 | 1 | 1 | 0 | python,python-zipfile | 14,096,860 | 1 | true | 0 | 0 | No. Read out the rest of the archive and write it to a new zip file. | 1 | 0 | 0 | Is it possible to delete a folder from inside a file using the ZipFile module in Python? | Deleting a folder in a zip file using the Python zipfile module | 1.2 | 0 | 0 | 422 |
14,100,093 | 2012-12-31T09:54:00.000 | 3 | 0 | 1 | 0 | python,node.js,amqp | 14,100,129 | 3 | true | 0 | 0 | As far as I am aware, there isn't an equivalent to pickle in JavaScript (or in the standard node libraries). | 1 | 15 | 0 | One of Python's features is the pickle function, that allows you to store any arbitrary anything, and restore it exactly to its original form. One common usage is to take a fully instantiated object and pickle it for later use. In my case I have an AMQP Message object that is not serializable and I want to be able to s... | What would be the equivalent of Pythons "pickle" in nodejs | 1.2 | 0 | 1 | 6,428 |
14,100,792 | 2012-12-31T11:09:00.000 | 0 | 0 | 0 | 0 | python,openerp | 14,102,667 | 2 | false | 1 | 0 | Why cant you use _constraint? You will only get warning when you are saving the record. | 1 | 2 | 0 | How can we compare two rows in a oneTomany table in OpenERP6.1?
I have a main table, say 'XX' and i have a oneTomany table, say 'YY' corresponding to
that table.
Now, i have three columns in the 'YY' table.Every time i create records into
this table, i want to check if the values in the three columns are identical.
i.e... | Compare two rows in a one2many table in OpenERP6.1 | 0 | 0 | 0 | 467 |
14,101,063 | 2012-12-31T11:36:00.000 | 3 | 0 | 0 | 0 | c#,python,ui-automation,pywinauto | 14,104,632 | 2 | false | 0 | 1 | The short answer is that there's no good way to automate sub-controls of a DataGridView using PyWinAuto.
If you want to read data out of a DataGridView (e.g. read the text contents of a cell, or determine whether a checkbox is checked), you are completely out of luck. If you want to control a DataGridView, there are t... | 1 | 0 | 0 | I was working with GUI automation for visual studio C# desktop application.
There I have DataGridView and inside the grid I have combo box and check boxes.
I tried to automate these using pywinauto, I can get only grid layout control only
and internal things I cant able to get the controls
(I tried with print _control_... | C# GUI automation using PyWinAuto | 0.291313 | 0 | 0 | 1,878 |
14,106,229 | 2012-12-31T21:35:00.000 | 4 | 0 | 0 | 0 | python,python-2.7,user-interface | 14,106,272 | 1 | true | 0 | 1 | There is no "best" nor "easiest". All of the toolkits you mention have strengths and weaknesses. I've had significant experience with wxPython and Tkinter, and both are nice. I would say Tkinter is a little easier, wxPython is a little more full-featured.
When someone asks me this question I tell them just to pick one... | 1 | 6 | 0 | I found some many Python GUI toolkits.
The ones I like are:
wxPython
pyGTK
Tkinter
pyQt
pySide
Which one is the best and easiest to use?
And by the way what is the difference in pyQt and pySide? They both seem to be alike :/. | Which is the best and easiest Python GUI toolkit? | 1.2 | 0 | 0 | 8,808 |
14,111,460 | 2013-01-01T14:58:00.000 | 4 | 0 | 0 | 1 | python,performance,tcpserver,httpserver | 14,111,484 | 2 | false | 0 | 0 | Neither of those built-in libraries was meant for serious production use. Get real implementations, for example, from Twisted, or Tornado, or gunicorn, etc, etc, there are lots of them. There's no need to stick with the standard library modules.
The performance, and probably the robustness of the built-in libraries i... | 1 | 4 | 0 | I've spent a few days on and off trying to get some hard statistics on what kind of performance you can expect from using the HTTPServer and/or TCPServer built-in libraries in Python.
I was wondering if anyone can give me any idea's as to how either/or would handle serving HTTP requests and if they would be able to hol... | Performance of Python HTTPServer and TCPServer | 0.379949 | 0 | 1 | 2,663 |
14,113,906 | 2013-01-01T20:23:00.000 | 0 | 0 | 0 | 1 | python,macos,command-line | 14,113,933 | 3 | false | 0 | 0 | Add the directory it is stored in to your PATH variable? From your prompt, I'm guessing you're using an sh-like shell and from your tags, I'm further assuming OS X. Go into your .bashrc and make the necessary changes. | 2 | 0 | 0 | I have just written a python script to do some batch file operations. I was wondering how i could keep it in some common path like rest of the command line utilities like cd, ls, grep etc.
What i expect is something like this to be done from any directory -
$ script.py arg1 arg2 | How to execute a python command line utility from the terminal in any directory | 0 | 0 | 0 | 170 |
14,113,906 | 2013-01-01T20:23:00.000 | 1 | 0 | 0 | 1 | python,macos,command-line | 14,113,928 | 3 | true | 0 | 0 | Just put the script directory into the PATH environment variable, or alternatively put the script in a location that is already in the PATH. On Unix systems, you usually use /home/<nick>/bin for your own scripts and add that to the PATH. | 2 | 0 | 0 | I have just written a python script to do some batch file operations. I was wondering how i could keep it in some common path like rest of the command line utilities like cd, ls, grep etc.
What i expect is something like this to be done from any directory -
$ script.py arg1 arg2 | How to execute a python command line utility from the terminal in any directory | 1.2 | 0 | 0 | 170 |
14,115,173 | 2013-01-01T23:20:00.000 | 0 | 0 | 1 | 0 | python,tidesdk | 14,669,489 | 1 | false | 0 | 0 | Yes, I've done this on multiple occasions. What has worked for me is to place the folder with the module into the "Resources" directory of your TideSDK project and use your usual "import" to load the module. | 1 | 0 | 0 | Folks... New to TideSDK. Want to use the tool to develop cross platform scientific applications. I need to import external modules and package them into the app. Is this possible? | TIdeSDK Python module import | 0 | 0 | 0 | 432 |
14,116,907 | 2013-01-02T04:40:00.000 | 1 | 0 | 0 | 0 | python,mysql,database,django,django-south | 14,116,934 | 1 | true | 1 | 0 | It doesn't matter if the database is running on the same machine as django/South. Wherever your django installation lives has the database configured in its settings. South migrations should work exactly the same. | 1 | 0 | 0 | Originally, I've just had servers that have both Django, South and my database installed (web + database server combined). But now, we're moving to a dedicate database server, and a dedicate web app server.
Since the database server doesn't have Django or South installed, how can I run migrations? Or at least, what's t... | How do I run South migrations (Django) on a database server? | 1.2 | 0 | 0 | 101 |
14,119,208 | 2013-01-02T08:57:00.000 | 2 | 0 | 0 | 0 | python,openerp | 14,119,351 | 3 | false | 1 | 0 | When saving a new record in openerp, a dictionary will be generated with all the fields having data as keys and its data as values. If the field is a one2many and have many lines, then a list of dictionaries will be the value for the one2many field. You can modify it by overriding the create and write functions in open... | 2 | 2 | 0 | I would like to know as to where is the value stored for a one2many table initially in OpenERP6.1?
i.e if we create a record for a one2many table,this record will be actually
saved to the database table only after saving the record of the main table
associated with this, even though we can create many records(rows) for... | Where is the value stored for a one2many table initially in OpenERP6.1 | 0.132549 | 1 | 0 | 1,493 |
14,119,208 | 2013-01-02T08:57:00.000 | 0 | 0 | 0 | 0 | python,openerp | 14,120,545 | 3 | false | 1 | 0 | One2Many field is child parent relation in OpenERP. One2Many is just logical field there is no effect in database for that.
If you are creating Sale order then Sale order line is One2Many in Sale order model. But if you will not put Many2One in Sale order line then One2Many in Sale order will not work.
Many2One field p... | 2 | 2 | 0 | I would like to know as to where is the value stored for a one2many table initially in OpenERP6.1?
i.e if we create a record for a one2many table,this record will be actually
saved to the database table only after saving the record of the main table
associated with this, even though we can create many records(rows) for... | Where is the value stored for a one2many table initially in OpenERP6.1 | 0 | 1 | 0 | 1,493 |
14,120,045 | 2013-01-02T10:02:00.000 | 3 | 0 | 0 | 1 | python,linux,audio | 14,120,125 | 2 | true | 0 | 0 | mpd should be perfect for you. It is a daemon and can be controlled by various clients, ranging from GUI-less command-line clients like mpc to GUI command-line clients like ncmpc and ncmpcpp up to several full-featured desktop clients.
mpd + mpc should do the job for you as mpc can be easily controlled via the command ... | 1 | 3 | 0 | I want to build use my Raspberry Pi as a media station. It should be able to play songs via commands over the network. These commands should be handled by a server written in Python. Therefor, I need a way to control audio playback via Python.
I decided to use a command line music player for linux since those should of... | Python-controllable command line audio player for Linux | 1.2 | 0 | 0 | 2,048 |
14,120,217 | 2013-01-02T10:14:00.000 | 0 | 0 | 1 | 0 | python,types | 14,122,364 | 3 | false | 0 | 0 | There is an important distinction of data types for variables (which only statically typed languages have, the respective statements are called declarations and help to determine and allocate the correct amount of memory at fixed addresses) and data types of values, which are much more common. Data types for variables... | 2 | 3 | 0 | I have started programming recently and I got confused when I learnt about data types. Why do we have/need datatypes?
Also languages like Python don't have data types making themm much simpler to learn. Why do languages like C or C++ have datatypes then? | Regarding data types | 0 | 0 | 0 | 133 |
14,120,217 | 2013-01-02T10:14:00.000 | 0 | 0 | 1 | 0 | python,types | 14,127,206 | 3 | false | 0 | 0 | Data types impose abstract structure on data. This abstraction allows us to work with data through simpler interfaces, or to use more efficient a algorithms for manipulating data.
Data types (structures) are the bread and butter of computer science.
Languages generally have built-in support for a few common data types ... | 2 | 3 | 0 | I have started programming recently and I got confused when I learnt about data types. Why do we have/need datatypes?
Also languages like Python don't have data types making themm much simpler to learn. Why do languages like C or C++ have datatypes then? | Regarding data types | 0 | 0 | 0 | 133 |
14,120,640 | 2013-01-02T10:43:00.000 | 0 | 0 | 0 | 0 | django,python-2.7,django-templates | 18,424,335 | 5 | false | 1 | 0 | I think your are writing the code from "beginning Django E-commerce" book.
The error is in your code you write {{ cart_sutotal|currency }} in place of {{ cart_subtotal }} . | 3 | 1 | 0 | I am going through the beginning django ecommerce application for shopping cart app. I am getting the error as mentioned above while clicking the add to cart button.
I am getting the error at the line {{ cart_sutotal|currency}} | bad operand type for abs(): 'str' in django | 0 | 0 | 0 | 15,930 |
14,120,640 | 2013-01-02T10:43:00.000 | 1 | 0 | 0 | 0 | django,python-2.7,django-templates | 14,121,826 | 5 | false | 1 | 0 | The currency filter expects its argument to be a numeric value; you're passing a string to your template as cart_sutotal.
Before passing it to the template, convert it to a decimal.Decimal, or, better, figure out why you're adding up price values and coming up with a string for the subtotal. | 3 | 1 | 0 | I am going through the beginning django ecommerce application for shopping cart app. I am getting the error as mentioned above while clicking the add to cart button.
I am getting the error at the line {{ cart_sutotal|currency}} | bad operand type for abs(): 'str' in django | 0.039979 | 0 | 0 | 15,930 |
14,120,640 | 2013-01-02T10:43:00.000 | 0 | 0 | 0 | 0 | django,python-2.7,django-templates | 14,120,681 | 5 | false | 1 | 0 | You are missing a cast somewhere in your code.
Wherever in the code you're doing abs(somevar) you need to cast a string to an integer by doing abs(int(somevar)). More info if you post a stacktrace or pieces of code. | 3 | 1 | 0 | I am going through the beginning django ecommerce application for shopping cart app. I am getting the error as mentioned above while clicking the add to cart button.
I am getting the error at the line {{ cart_sutotal|currency}} | bad operand type for abs(): 'str' in django | 0 | 0 | 0 | 15,930 |
14,124,281 | 2013-01-02T15:07:00.000 | 2 | 0 | 1 | 0 | python,windows-7,python-2.7,python-idle | 14,126,996 | 2 | false | 0 | 0 | Uninstall the 64 bits Python 2.7 and install 32 bits Python 2.7. Then your IDLE will work fine. | 1 | 2 | 0 | I'm using windows 7 64-bit and python 2.7.3 32-bit and the IDLE wont open.
I had python 2.7.3 64-bit (and the IDLE was fine) - but i needed the 32 to run some code.
any ideas? | Python 2.7.3 IDLE wont open | 0.197375 | 0 | 0 | 4,663 |
14,126,201 | 2013-01-02T17:14:00.000 | 1 | 0 | 0 | 0 | python,matlab,numpy,linear-algebra | 14,126,790 | 2 | false | 0 | 0 | In matlab (for historical reason I would argue) the basic type is an M-by-N array (matrix) so that scalars are 1-by-1 arrays and vectors either N-by-1 or 1-by-N arrays. (Memory layout is always Fortran style).
This "limitation" is not present in numpy: you have true scalars and ndarray's can have as many dimensions you... | 1 | 5 | 1 | Is there a standard practice for representing vectors as 1d or 2d ndarrays in NumPy? I'm moving from MATLAB which represents vectors as 2d arrays. | Performance/standard using 1d vs 2d vectors in numpy | 0.099668 | 0 | 0 | 1,655 |
14,127,875 | 2013-01-02T19:23:00.000 | 4 | 0 | 0 | 0 | python,boto,amazon-sqs | 14,129,645 | 2 | false | 0 | 0 | Concurrency is important, either through threads or multiprocessing, or gevent. Take your pick. Also, are you using send_message_batch? That allows you to send 10 messages at a time and also helps a lot. | 1 | 3 | 0 | Right now I have a Python script that uses Boto to insert a number of messages into SQS -- around 100,000 to 200,000. Simply iterating through the loop without creating SQS messages takes about 3 minutes. With SQS messages, it's dreadfully slow.
What's the best way to speed this up? Should I create a pool of SQS connec... | What's the best way to insert a huge number of SQS messages in Python quickly? | 0.379949 | 0 | 0 | 2,551 |
14,130,010 | 2013-01-02T22:09:00.000 | 0 | 0 | 1 | 0 | java,python,image,image-recognition | 14,130,289 | 3 | false | 0 | 0 | If I were going to do this, I would use normalized floats.
The letter A would be:
[(0.0,0.0),(0.5,1.0),(1.0,0.0),(0.1,0.5)(0.9,0.5)]
Update (further explanation)
So my thought is that you should be able to uniquely identify a letter with an array of normalized points. Points would be at important features of the let... | 3 | 2 | 0 | I am developing Image recognition software that will detect letters. I was wondering how I could create a model of a letter ("J" for example) so that when I take a picture with the letter "J" on it, the software will compare the image to the model and detect the letter "J".
How would I create the model? | Creating an Image model | 0 | 0 | 0 | 203 |
14,130,010 | 2013-01-02T22:09:00.000 | 0 | 0 | 1 | 0 | java,python,image,image-recognition | 14,130,097 | 3 | false | 0 | 0 | You can use OpenCv library for java , this library contain Template Matching Model already implemented
but the better thing for image recognition is using learning machine or neural network | 3 | 2 | 0 | I am developing Image recognition software that will detect letters. I was wondering how I could create a model of a letter ("J" for example) so that when I take a picture with the letter "J" on it, the software will compare the image to the model and detect the letter "J".
How would I create the model? | Creating an Image model | 0 | 0 | 0 | 203 |
14,130,010 | 2013-01-02T22:09:00.000 | 2 | 0 | 1 | 0 | java,python,image,image-recognition | 14,130,216 | 3 | false | 0 | 0 | It seems you want to do OCR (Optical Character Recognition).
If this is only part of a larger project, try OpenCV. Even if you are making a commercial product, it has a permissive BSD license.
If you have set out to make a library of your own, read some of the papers available through any good search engine. There are ... | 3 | 2 | 0 | I am developing Image recognition software that will detect letters. I was wondering how I could create a model of a letter ("J" for example) so that when I take a picture with the letter "J" on it, the software will compare the image to the model and detect the letter "J".
How would I create the model? | Creating an Image model | 0.132549 | 0 | 0 | 203 |
14,137,675 | 2013-01-03T11:07:00.000 | 1 | 1 | 0 | 0 | python,execution-time,pydub | 14,137,744 | 2 | false | 0 | 0 | it does not: once your script starts dubbing the wav files, it's another task.
see it as a 3-step (i'm guessing, very little information is provided)
step 1: you send the request --> time determined by "internet speed"
step 2: files get dubbed --> server side work, internet speed doesn't count anymore
step 3: you get... | 2 | 0 | 0 | I am using pydub to mix two wav files in one file. Each wav file has about 25Mb and for me page is loaded in about 4 seconds ( so execution time would be 4 seconds )
Does this execution time depend on user's internet connection speed?
If it has any sense : The test.py file is on GoDaddy Deluxe Linux Hosting) | Does python script execution time depend on internet speed? | 0.099668 | 0 | 0 | 544 |
14,137,675 | 2013-01-03T11:07:00.000 | 0 | 1 | 0 | 0 | python,execution-time,pydub | 14,137,714 | 2 | false | 0 | 0 | No. The execution happens on the server and the execution time depends on the server specs and your script optimizations. The internet speed just affects when the client will receive the response after it is ready from the server and sent!
So in few words:
Server gets request from browser (time for request to reach ... | 2 | 0 | 0 | I am using pydub to mix two wav files in one file. Each wav file has about 25Mb and for me page is loaded in about 4 seconds ( so execution time would be 4 seconds )
Does this execution time depend on user's internet connection speed?
If it has any sense : The test.py file is on GoDaddy Deluxe Linux Hosting) | Does python script execution time depend on internet speed? | 0 | 0 | 0 | 544 |
14,137,778 | 2013-01-03T11:12:00.000 | 0 | 0 | 0 | 0 | python,html,django,pdf,phantomjs | 14,161,687 | 4 | true | 1 | 0 | Okay, after whole lot googling, I couldn't find anything. So I came up with two hackish solutions.
On the page which user is viewing, create a form with a hiding text area, the submit button is named 'Generate PDF', after rendering the page, I use JavaScript to get all the html within the divs I want and put them int... | 1 | 1 | 0 | I am using Django to create a report site. The reports are generated dynamically, they also include some SVG charts. I want to create a PDF file which is based on the current report the user is viewing, but with extra header and footer. I came across Phantomjs, two problems though, first is that the page requires user ... | How to convert a html page to pdf in Django | 1.2 | 0 | 0 | 2,954 |
14,138,946 | 2013-01-03T12:27:00.000 | 0 | 0 | 0 | 0 | python | 14,139,047 | 3 | false | 0 | 1 | You can use matplotlib or pygal. Something similar with your describing technique is used in PyQtGraph. | 1 | 0 | 0 | I have question and want to see if it can be realized in wxpython.
I would like to plot data on wxpython, and then use the mouse to select some points which are plotted, using the mouse.
At the moment i am using wx.lib.plot and using the PlotMarker
Is there a way of doing this with wx.lib.plot or do i have to use an... | interactive graph python wx.lib.plot. selecting some points | 0 | 0 | 0 | 944 |
14,139,190 | 2013-01-03T12:43:00.000 | 1 | 0 | 0 | 0 | python,qt,python-2.7,pyside | 14,139,249 | 1 | true | 0 | 1 | Run the app using pythonw it will hide the window | 1 | 1 | 0 | I made an app with PySide. When ever I run the app the GUI shows up but the CMD window is still there too. How do I hide it? | How to hide the CMD window in PySide app | 1.2 | 0 | 0 | 228 |
14,139,377 | 2013-01-03T12:54:00.000 | 0 | 0 | 0 | 1 | python,batch-file,cross-platform,py2exe,scientific-computing | 14,139,446 | 3 | false | 0 | 0 | I would recommend using py2exe for the windows side, and then BuildApplet for the mac side. This will allow you to make a simple app you double click for your less savvy users. | 2 | 5 | 0 | EDIT
One option I contemplated but don't know enough about is to e.g. for windows write a batch script to:
Search for a Python installation, download one and install if not present
Then install the bundled package using distutils to also handle dependencies.
It seems like this could be a relatively elegant and simpl... | Cross-platform deployment and easy installation | 0 | 0 | 0 | 1,886 |
14,139,377 | 2013-01-03T12:54:00.000 | 2 | 0 | 0 | 1 | python,batch-file,cross-platform,py2exe,scientific-computing | 14,139,409 | 3 | false | 0 | 0 | py2exe works pretty well, I guess you just have to setup a Windows box (or VM) to be able to build packages with it. | 2 | 5 | 0 | EDIT
One option I contemplated but don't know enough about is to e.g. for windows write a batch script to:
Search for a Python installation, download one and install if not present
Then install the bundled package using distutils to also handle dependencies.
It seems like this could be a relatively elegant and simpl... | Cross-platform deployment and easy installation | 0.132549 | 0 | 0 | 1,886 |
14,139,855 | 2013-01-03T13:27:00.000 | 2 | 0 | 1 | 0 | python,macos,virtualenv | 14,139,914 | 1 | true | 0 | 0 | If you're using virtualenv, there's an argument -p to specify the PYTHON_EXE to use for this environment. | 1 | 1 | 0 | I have a python virtual environment for the sole purpose of using wxPython. wxPython on Mac uses the Carbon framework, which hasn't been built in 64-bit. Therefore, I can't run wxPython on a mac with Python running 64-bit. Is there a way to tell my installation to always run 32-bit? It's getting annoying having to use ... | Setting Python 32-bit and 64-bit mode for virtualenv on OSX | 1.2 | 0 | 0 | 1,427 |
14,140,495 | 2013-01-03T14:08:00.000 | 0 | 0 | 0 | 0 | python,video-capture | 68,495,610 | 7 | false | 0 | 1 | You can do offline html,js code to do video with audio recording. Using python lib python webview open that page. It should work fine. | 1 | 29 | 0 | i'm looking for a solution, either in linux or in windows, that allows me to
record video (+audio) from my webcam & microphone, simultaneously.
save it as a file.AVI (or mpg or whatever)
display the video on the screen while recording it
Compression is NOT an issue in my case, and i actually prefer to capture RAW and... | How to capture a video (AND audio) in python, from a camera (or webcam) | 0 | 0 | 0 | 75,201 |
14,142,194 | 2013-01-03T15:44:00.000 | 30 | 0 | 0 | 0 | python,grid,tkinter | 14,144,121 | 3 | false | 0 | 1 | The best tool for doing layouts using grid, IMHO, is graph paper and a pencil. I know you're asking for some type of program, but it really does work. I've been doing Tk programming for a couple of decades so layout comes quite easily for me, yet I still break out graph paper when I have a complex GUI.
Another thing t... | 1 | 59 | 0 | Does anyone know of a GUI design app that lets you choose/drag/drop the widgets, and then turn that layout into Python code with the appropriate Tkinter calls & arrangement using the grid geometry manager? So far I've turned up a couple of pretty nice options that I may end up using, but they generate code using eithe... | Is there a GUI design app for the Tkinter / grid geometry? | 1 | 0 | 0 | 150,823 |
14,144,460 | 2013-01-03T17:56:00.000 | -1 | 1 | 0 | 0 | python,pdf | 14,144,813 | 2 | false | 0 | 0 | Use Action Wizard in Acrobat X Pro.
Create New Action.
Setup Start With, and Save To step.
Set checkbox Overwrite existing files.
Select Content. Select Add Document Description.
Left mouse click in option. Uncheck Autor checkbox Leave As Is and enter new Autor name.
Press Save button, set name action Your Action Name.... | 1 | 0 | 0 | In my office we have about 1000 PDFs that have arbitrary title and author information. My bosses had a spreadsheet created with the PDFs filename and an appropriate title and appropriate author information.
I would like to find a programmatic way to move the data from the Excel sheet to the PDF attributes?
My preferred... | Changing a PDF author programmatically | -0.099668 | 0 | 0 | 834 |
14,145,677 | 2013-01-03T19:21:00.000 | 0 | 0 | 0 | 0 | django,model-view-controller,python-3.x,django-views,three-tier | 14,147,669 | 1 | false | 1 | 0 | If Class1 or parser import from views, then you have a circular dependency. You'll need to move any shared code out into a third file.
You might consider though whether you need all those separate files under logic. In Python there's no requirement to have a class in its own file, so maybe you could have a single logic... | 1 | 1 | 0 | I am new to Django and have a little problem with making all the project structure clear and organized and so on.. The MVC stuff in Django is quite easy to use when making a small project. However, when I am trying to get a new layer (application logic, like three-tier architecture) between views.py and models.py I hav... | How to load custom packages from inside Django apps into views.py? | 0 | 0 | 0 | 1,150 |
14,146,814 | 2013-01-03T20:34:00.000 | 0 | 0 | 0 | 1 | python,nginx,wsgi,haproxy | 14,148,902 | 2 | false | 1 | 0 | Of the three options, only option number 1 has any chance of working with websockets. Nginx, and most standard webservers will not play nicely with them. | 1 | 2 | 0 | I consider this scenarios for deploying High Available Python web apps:
load balancer -* wsgi servers
load balancer -* production HTTP sever - wsgi server
production HTTP sever (with load balancing features, like Nginx) -* wsgi servers
For load balancer I consider HAProxy
For production HTTP sever I consider Nginx
... | HA deploy for Python wsgi application | 0 | 0 | 0 | 2,227 |
14,147,287 | 2013-01-03T21:09:00.000 | 0 | 0 | 1 | 0 | python,object,import,blender | 48,065,106 | 2 | false | 0 | 0 | From what I saw after importing things, the default tag is true for all objects (including those who already exist in the scene). So it seems like that in order to mark objects, you have to assign them a false value, and then import, and then add them to imported objects if their tag is True. No the other way around. S... | 1 | 3 | 0 | The (probably not so well written) question is: Is there any way to get object data right after it is loaded through bpy.import_scene.obj function?
I mean when i import an obj file with this function i need to make some more transformation for it. When i select an object via name 'Mesh' (default name of object after ... | How to mark last imported *obj in blender | 0 | 0 | 0 | 1,433 |
14,147,434 | 2013-01-03T21:20:00.000 | 0 | 0 | 0 | 0 | python,gtk | 14,160,390 | 2 | true | 0 | 1 | Apparently it was being caused by my attempt to change the background color of the tables--I was setting the background color of every HBox (and Label), which was responsible for nearly all of the excessive teardown time. All I had to do was set the background color of the Viewports the Tables are contained in. | 2 | 0 | 0 | My PyGTK application creates a secondary popup window for displaying a preview of results. This window is fairly elaborate, with Table widgets nested three deep and populated by HBoxes containing one Label each at the lowest level. The number of Labels total can be in the thousands. I am noticing that when I close this... | Excessive hang time when destroying a PyGTK window | 1.2 | 0 | 0 | 88 |
14,147,434 | 2013-01-03T21:20:00.000 | 1 | 0 | 0 | 0 | python,gtk | 14,156,870 | 2 | false | 0 | 1 | How long takes that window to show up? Are all the widgets created at once when it is displayed?
Your problem might be caused by the destruction of your thousands of widgets, all at the same time. Or by a lengthy action perform on on of those widgets destruction. But without some code to look at, there could be thousa... | 2 | 0 | 0 | My PyGTK application creates a secondary popup window for displaying a preview of results. This window is fairly elaborate, with Table widgets nested three deep and populated by HBoxes containing one Label each at the lowest level. The number of Labels total can be in the thousands. I am noticing that when I close this... | Excessive hang time when destroying a PyGTK window | 0.099668 | 0 | 0 | 88 |
14,152,187 | 2013-01-04T06:25:00.000 | 4 | 1 | 1 | 0 | python,ide,livecoding | 14,152,212 | 4 | false | 0 | 0 | eclipse+pydev
pycharm
many others .... | 1 | 0 | 0 | Are there any IDEs for Python that support automatic error highlighting (like the Eclipse IDE for Java?) I think it would be a useful feature for a Python IDE, since it would make it easier to find syntax errors. Even if such an editor did not exist, it still might be possible to implement this by automatically running... | Is it possible to implement automatic error highlighting for Python? | 0.197375 | 0 | 0 | 203 |
14,152,389 | 2013-01-04T06:41:00.000 | 0 | 0 | 0 | 0 | python,django,django-templates | 14,152,733 | 5 | false | 1 | 0 | I would suggest to use Javascript or jQuery at client side to populate the dropdown according to the current year. | 1 | 2 | 0 | I want to create a year dropdown in django template. The dropdown would contain start year as 2011, and end year should be 5 years from current year.
For ex: If today i see the dropdwon it will show me years ranging from 2011, 2012, 2013,...2017.
It can be done by sending a list from views.py and looping it in the temp... | Creating year dropdown in Django template | 0 | 0 | 0 | 10,836 |
14,152,548 | 2013-01-04T06:55:00.000 | 0 | 1 | 0 | 1 | python,python-3.x | 64,151,445 | 3 | false | 0 | 0 | In the general case, no; many Python 2 scripts will not run on Python 3, and vice versa. They are two different languages.
Having said that, if you are careful, you can write a script which will run correctly under both. Some authors take extra care to make sure their scripts will be compatible across both versions, co... | 2 | 7 | 0 | i have thousands of servers(linux), some only has python 2.x and some only has python 3.x, i want to write one script check.py can run on all servers just as $./check.py without use $python check.py or $python3 check.py, is there any way to do this?
my question is how the script check.py find the Interpreter no matter ... | can one python script run both with python 2.x and python 3.x | 0 | 0 | 0 | 5,143 |
14,152,548 | 2013-01-04T06:55:00.000 | 0 | 1 | 0 | 1 | python,python-3.x | 14,152,613 | 3 | false | 0 | 0 | Considering that Python 3.x is not entirely backwards compatible with Python 2.x, you would have to ensure that the script was compatible with both versions. This can be done with some help from the 2to3 tool, but may ultimately mean running two distinct Python scripts. | 2 | 7 | 0 | i have thousands of servers(linux), some only has python 2.x and some only has python 3.x, i want to write one script check.py can run on all servers just as $./check.py without use $python check.py or $python3 check.py, is there any way to do this?
my question is how the script check.py find the Interpreter no matter ... | can one python script run both with python 2.x and python 3.x | 0 | 0 | 0 | 5,143 |
14,152,651 | 2013-01-04T07:02:00.000 | 4 | 1 | 0 | 0 | python,django,apache,mod-wsgi,wsgi | 14,152,716 | 1 | false | 1 | 0 | Since I answered your other question regarding Flask, I assume you are referring to using Flask's development server. The problem with that is it is single threaded.
Using mod_wsgi, you would be running behind apache, which will do process forking and allow for multiple simultaneous requests to be handled.
There are o... | 1 | 1 | 0 | I was wondering what is the advantages of mod_wsgi. For most python web framework, I can launch (daemon) the application by python directly and serve it in a port. Then when shall I use mod_wsgi? | Why should I use `mod_wsgi` instead of launching by python? | 0.664037 | 0 | 0 | 82 |
14,153,954 | 2013-01-04T08:57:00.000 | 2 | 1 | 0 | 0 | python,outlook,smtplib | 14,154,176 | 1 | false | 0 | 0 | You can send a copy of that email to yourself, with some header that tag the email was sent by yourself, then get another script (using IMAP library maybe) to move the email to the Outlook Sent folder | 1 | 4 | 0 | I am using hosted exchange Microsoft Office 365 email and I have a Python script that sends email with smtplib. It is working very well. But there is one issue, how can I get the emails to show up in my Outlook Sent Items? | How can I see emails sent with Python's smtplib in my Outlook Sent Items folder? | 0.379949 | 0 | 1 | 1,550 |
14,158,584 | 2013-01-04T14:00:00.000 | 0 | 0 | 1 | 0 | python,private-members | 14,158,732 | 2 | false | 0 | 0 | sLet's say you have operation operationA that calls to subOperationA and suboperationB on the same class, and those methods have no meaning as individual operations, they manipulate data and you have to prevent unexpected executions of them (that means calls from methods others than operationA). So private allows you ... | 1 | 1 | 0 | I understand how it works and I understand meaning of syntax. But I do not understand why would I want to use it? | Why do I need the private methods in real life? | 0 | 0 | 0 | 123 |
14,158,724 | 2013-01-04T14:09:00.000 | 0 | 0 | 1 | 0 | python,multithreading | 14,158,784 | 1 | false | 0 | 0 | Python (generally) doesn't return the memory it used to the operating system. Once the queue is empty, your process will hold on to the memory that was allocated to the queue. If you were to add another 3GB worth of data to the queue, Python should reuse the memory it already holds, rather than requesting more from the... | 1 | 4 | 0 | I have an application where I stuff lots of data in a queue, then workers empty that data.
I am using queue because it is blocked, so I don't need to apply lock all the times.
So there are times when that queue is stuffed with 1 million items of string data. Each of the item taking about 80 bytes of memory.
At some, ... | Python's Queue collection doesn't release the memory | 0 | 0 | 0 | 287 |
14,158,844 | 2013-01-04T14:19:00.000 | 5 | 0 | 0 | 1 | python,django,webserver,tornado,blocking | 14,158,864 | 2 | true | 1 | 0 | I believe It is single threaded and blocking so it is easy to debug. if you put a debugger in it will completely halt the server | 2 | 3 | 0 | Why is the Django webserver blocking, not non-blocking like Tornado? Was there a reason to design the webserver in this way? | What is a main reason that Django webserver is blocking? | 1.2 | 0 | 0 | 176 |
14,158,844 | 2013-01-04T14:19:00.000 | 5 | 0 | 0 | 1 | python,django,webserver,tornado,blocking | 14,159,011 | 2 | false | 1 | 0 | If you really need another reason on top of that suggested by dm03514, it I'd probably simply because it was easier to write. Since the dev server I'd for development only, little effort was spent in making it more complex or able to serve multiple requests. In fact, this is an explicit goal: making it any better would... | 2 | 3 | 0 | Why is the Django webserver blocking, not non-blocking like Tornado? Was there a reason to design the webserver in this way? | What is a main reason that Django webserver is blocking? | 0.462117 | 0 | 0 | 176 |
14,160,178 | 2013-01-04T15:40:00.000 | 1 | 0 | 0 | 1 | python,cross-platform | 14,160,208 | 4 | false | 0 | 0 | you could create your initialization functions to take those variables as parameters so it is easy to spoof them in testing | 1 | 3 | 0 | At the beginning of the script, I use platform.system and platform.release to determine which OS and version the script is running on (so it knows it's data is in Application Support on Mac, home on unix-like and non-mac unix, appdata on windows <= XP, and appdata/roaming on windows >= Vista). I'd like to test my serie... | Give python "platform" library fake platform information? | 0.049958 | 0 | 0 | 823 |
14,160,679 | 2013-01-04T16:11:00.000 | 1 | 0 | 0 | 0 | python,selenium,webdriver | 14,161,598 | 1 | true | 0 | 0 | the server is started independently. creating an instance of webdriver.Remote does not start the server. | 1 | 0 | 0 | Using the Selenium Python bindings, is it possible to start the RemoteWebDriver server separately from creating a webdriver.Remote instance? The point of doing this would be to save time spent repeatedly starting and stopping the server when all I really need is a new instance of the client. (This is possible with Chr... | Start `RemoteWebDriver` server separately from creating a `webdriver.Remote` instance? | 1.2 | 0 | 1 | 205 |
14,161,479 | 2013-01-04T17:03:00.000 | 1 | 1 | 0 | 0 | python,selenium,testcase | 14,161,887 | 1 | true | 0 | 0 | Sharing a single RemoteWebDriver can be dangerous, since your tests are no longer independently self-contained. You have to be careful about cleaning up browser state and the like, and recovering from browser crashes in the event a previous test has crashed the browser. You'll also probably have more problems if you ... | 1 | 0 | 0 | Are there problems with sharing a single instance of RemoteWebDriver between multiple test cases? If not, what's the best practice place to create the instance? I'm working with Python, so I think my options are module level setup, test case class setup, test case instance setup (any others?) | Share single instance of selenium RemoteWebDriver between multiple test cases | 1.2 | 0 | 1 | 249 |
14,162,140 | 2013-01-04T17:45:00.000 | 0 | 0 | 1 | 0 | python | 14,162,418 | 1 | false | 0 | 0 | If what you want is a C API version of exec, maybe try PyRun_File and its ilk? Not sure exactly what you're trying to accomplish though. | 1 | 1 | 0 | I am trying to set local/globals variables in PyRun_InteractiveLoop call.
Cant figure out how to do it, since, unlike exec counterparts, loop doesn't accept global/local args.
What am I missing? | PyRun_InteractiveLoop globals/locals | 0 | 0 | 0 | 199 |
14,163,114 | 2013-01-04T18:53:00.000 | 7 | 0 | 0 | 0 | python,amazon-web-services,boto,amazon-cloudformation | 14,165,269 | 1 | true | 1 | 0 | If you do a describe_stacks call, it will return a list of Stack objects and each of those will have an outputs attribute which is a list of Output objects.
Is that what you are looking for? | 1 | 6 | 0 | I'm trying to retrieve the list of outputs from a CloudFormation template using Boto. I see in the docs there's an object named boto.cloudformation.stack.Output. But I think this is unimplemented functionality. Is this currently possible? | Returning the outputs from a CloudFormation template with Boto? | 1.2 | 0 | 0 | 3,837 |
14,163,949 | 2013-01-04T19:52:00.000 | 1 | 0 | 0 | 0 | http,rest,python-2.7,keep-alive,python-requests | 14,171,479 | 1 | true | 0 | 0 | You could try setting up your application or operating system to use a known good DNS server like 8.8.8.8
EDIT: You can also bypass the DNS by adding the host name and IP address of the REST service to yor hosts file. | 1 | 0 | 0 | My internet connection has an issue. Around 50% of times, web pages don't load because of DNS look up failing. Just reloading page works, and I am able to browse like that.
However, I am also using REST api service for my project. When I run the program, it keeps on calling this webservice repeatedly, hundreds of times... | Using Keep Alive in Requests module - Python 2.7 | 1.2 | 0 | 1 | 524 |
14,164,753 | 2013-01-04T20:49:00.000 | 2 | 1 | 0 | 0 | python,hardware | 14,164,831 | 2 | false | 0 | 0 | Have you looked into getting a basic arduino? It sounds like you should pick up a cheap one at Radio Shack and get the RF devices to trigger your garage door opener remotely. With the hardware, you can easily talk to it via python (though it'd be easy enough to just do with the Arduino language). | 2 | 0 | 0 | I would like to build a RF transmitter/controller for my garage. When my vehicle gets within 25', I'd like for a computer to trigger a physical relay to open my garage door. you know, like Batman.
I like Python, so I'm hoping I can use it here. | Can I use Python to interact with an RF transmitter/controller? | 0.197375 | 0 | 0 | 465 |
14,164,753 | 2013-01-04T20:49:00.000 | 4 | 1 | 0 | 0 | python,hardware | 14,165,338 | 2 | true | 0 | 0 | Look in to the Raspberry Pi. It's a $25 embeddable computer than supports Python. You will need to spec an RF transceiver that can interface with the on board hardware and use the documentation to determine a control method. | 2 | 0 | 0 | I would like to build a RF transmitter/controller for my garage. When my vehicle gets within 25', I'd like for a computer to trigger a physical relay to open my garage door. you know, like Batman.
I like Python, so I'm hoping I can use it here. | Can I use Python to interact with an RF transmitter/controller? | 1.2 | 0 | 0 | 465 |
14,165,573 | 2013-01-04T21:51:00.000 | 1 | 0 | 0 | 0 | python,django,jenkins,django-testing,django-jenkins | 14,205,396 | 2 | false | 1 | 0 | This is a really tough question to answer.
It is possible there are some common pitfalls django developers falls into, but those I do not know.
Outside of that, this is just normal debugging:
Find a way to reproduce the failure. If you can make the test fail on your own laptop, great. If you cannot, you have to debug... | 1 | 2 | 0 | I have asked this one earlier too but am not satisfied with the answer.
What I use:
Working on Django/python website.
Development done on python virtual envs locally.
using GIT as my SCM
have separate virtual servers deployed for Developer and Production branches for GIT
Using Jenkins CI for continuous Integration. Se... | Random test failures when code pushed to Jenkins | 0.099668 | 0 | 0 | 1,467 |
14,166,161 | 2013-01-04T22:39:00.000 | 1 | 0 | 0 | 0 | python,django,search,nosql,full-text-search | 14,166,303 | 1 | true | 1 | 0 | Firstly, Haystack isn't a search engine, it's a library that provides a Django API to existing search engines like Solr and Whoosh.
That said, your example isn't really a very good one. You wouldn't use a separate search engine to search by ISBN, because your database would already have an index on the Book table which... | 1 | 0 | 0 | Could you explain how search engines like Sphinx, Haystack, etc fit in to a web framework. If you could explain in a way that someone new to web development could understand that would help.
One example use case I made up for this question is a book search feature. Lets say I have a noSQL database that contains book ob... | Explain search (Sphinx/Haystack) in simple context? | 1.2 | 0 | 0 | 135 |
14,168,522 | 2013-01-05T04:16:00.000 | 2 | 0 | 1 | 1 | python,windows | 14,168,530 | 1 | false | 0 | 0 | Download (or open if you already have) dependency walker, then open python.exe in it. See if you are missing a DLL or got a DLL corrupted. You may require to re-install python, some reference DLL or exe files could be corrupted/overwritten/modified/deleted. | 1 | 1 | 0 | My python environment was working alright before and after running a C++ code multiple times from python subprocesses, I started the computer and saw that it says that python.exe is not a valid win32 application and I no longer access python. What changed I am not sure. Will I need to reinstall python? When I open the ... | python.exe is not a valid win32 application error coming suddenly | 0.379949 | 0 | 0 | 5,945 |
14,172,470 | 2013-01-05T14:00:00.000 | 1 | 0 | 0 | 1 | python,flask,gunicorn | 14,305,123 | 2 | false | 1 | 0 | We ended up changing our application to send logs to stdout and now rely on supervisord to aggregate the logs and write them to a file. We also considered sending logs directly to rsyslog but for now this is working well for us. | 1 | 8 | 0 | I have a flask app that runs in multiple gunicorn sync processes on a server and uses TimedRotatingFileHandler to log to a file from within the flask application in each worker. In retrospect this seems unsafe. Is there a standard way to accomplish this in python (at high volume) without writing my own socket based log... | Gunicorn logging from multiple workers | 0.099668 | 0 | 0 | 3,257 |
14,176,280 | 2013-01-05T20:49:00.000 | -2 | 0 | 0 | 0 | python,arrays,numpy,statistics,scipy | 26,791,595 | 4 | false | 0 | 0 | Go to MS Excel. If you don't have it your work does, there are alternatives
Enter the array of numbers in Excel worksheet. Run the formula in the entry field, =TTEST (array1,array2,tail). One tail is one, Two tail is two...easy peasy. It's a simple Student's T and I believe you may still need a t-table to interpre... | 1 | 0 | 1 | I have two 2-D arrays with the same shape (105,234) named A & B essentially comprised of mean values from other arrays. I am familiar with Python's scipy package, but I can't seem to find a way to test whether or not the two arrays are statistically significantly different at each individual array index. I'm thinking... | Test for statistically significant difference between two arrays | -0.099668 | 0 | 0 | 7,302 |
14,177,297 | 2013-01-05T22:53:00.000 | 0 | 0 | 0 | 0 | menu,python-2.7,python-idle,turtle-graphics,cheeseshop | 26,772,106 | 1 | false | 0 | 1 | In 3.x, look at Lib/turtledemo/main.py for how to put a turtle canvas into a tkinter window with other stuff. In 2.x, the turtledemo main code is in Demo/turtle/turtleDemo.py in the source repository, but the Demo directory is not installed on Windows. | 1 | 1 | 0 | So I have an assignment in Computer Science that requires that I put an interactive menu into my python turtle graphics projects. I run on python 2.7.3 and would like some help on what modules to import and a basic outline of how to put an interactive menu into python turtle graphics. Thank you for your answers! | How to Insert an Interactive Menu into Python Turtle Graphics | 0 | 0 | 0 | 1,224 |
14,177,436 | 2013-01-05T23:11:00.000 | 0 | 0 | 0 | 0 | python-3.x,amazon-web-services,amazon-s3 | 70,791,596 | 2 | false | 1 | 0 | Using AWS CLI,
aws s3 ls s3://*bucketname* --region *bucket-region* --no-sign-request | 2 | 3 | 0 | Given a bucket with publicly accessible contents, how can I get a listing of all those publicly accessible contents? I know boto can do this, but boto requires AWS credentials. Also, boto doesn't work in Python3, which is what I'm working with. | Get publicly accessible contents of S3 bucket without AWS credentials | 0 | 0 | 1 | 1,214 |
14,177,436 | 2013-01-05T23:11:00.000 | 4 | 0 | 0 | 0 | python-3.x,amazon-web-services,amazon-s3 | 14,199,730 | 2 | false | 1 | 0 | If the bucket's permissions allow Everyone to list it, you can just do a simple HTTP GET request to http://s3.amazonaws.com/bucketname with no credentials. The response will be XML with everything in it, whether those objects are accessible by Everyone or not. I don't know if boto has an option to make this request wit... | 2 | 3 | 0 | Given a bucket with publicly accessible contents, how can I get a listing of all those publicly accessible contents? I know boto can do this, but boto requires AWS credentials. Also, boto doesn't work in Python3, which is what I'm working with. | Get publicly accessible contents of S3 bucket without AWS credentials | 0.379949 | 0 | 1 | 1,214 |
14,179,543 | 2013-01-06T05:16:00.000 | 3 | 0 | 1 | 0 | python,nlp,nltk | 14,179,593 | 3 | false | 0 | 0 | How about you tokenize the string as a first step using str.split(). Then, go through the resulting array using a for loop, doing the following: if the word is not contained in the set of keys of a dictionary, add it to the dictionary, storing its count, in this case 1. Otherwise, the word is already contained, look up... | 1 | 3 | 0 | I just need to do what the title of this post says: write a python program that returns all words that occur at least 5 times in a text. I realize this is a pretty simple question. I am a novice programmer trying to pick up some NLP skills and for some reason I can't figure this out. Your help would be much appreciated... | How to write a python program that returns all words that occur at least 5 times in a text? | 0.197375 | 0 | 0 | 750 |
14,179,941 | 2013-01-06T06:33:00.000 | 1 | 0 | 1 | 1 | python,numpy,installation,scipy | 21,084,055 | 4 | false | 0 | 0 | You can import a module from an arbitrary path by calling:
sys.path.append() | 1 | 32 | 0 | I am using numpy / scipy / pynest to do some research computing on Mac OS X. For performance, we rent a 400-node cluster (with Linux) from our university so that the tasks could be done parallel. The problem is that we are NOT allowed to install any extra packages on the cluster (no sudo or any installation tool), they... | How to install python packages without root privileges? | 0.049958 | 0 | 0 | 40,097 |
14,180,944 | 2013-01-06T09:44:00.000 | 2 | 0 | 0 | 1 | python,django,celery | 14,181,856 | 1 | false | 1 | 0 | The stable version of kombu is production ready, same for celery.
kombu takes care of the whole messaging between consumers, producers and the message broker which in order are the celery workers, webworkers (or more in general scripts that put tasks in the queue) and the message broker you are using.
You need kombu to... | 1 | 3 | 0 | I am using Django-kombu with Celery but have read at a quite few places that it isn't production ready.
Basically, I want to create a multiple master - multiple slaves architecture using Celery and pass messages in between them and and back to the main program that did the call.
I am not able to understand where does... | What are the other alternatives to using django-kombu? | 0.379949 | 0 | 0 | 590 |
14,183,362 | 2013-01-06T15:02:00.000 | 0 | 0 | 1 | 1 | python,linux | 14,183,758 | 2 | false | 0 | 0 | Create a symlink in /usr/bin/ called python2.7, point to to where you have installed the new Python and use that.
Do not attempt to upgrade or force the default python on a redhat box, because a lot of other tools will stop working. | 2 | 0 | 0 | I have installed manually python (2.7.3). Whoc do I update the rpm version
usr/bin/python -V:
Python 2.7.3
rpm -qf /usr/bin/python:
python-2.6.5-3.el6.x86_64
any suggestions?
linux version: RH6.3 | python binary version doesnt match rpm version | 0 | 0 | 0 | 64 |
14,183,362 | 2013-01-06T15:02:00.000 | 1 | 0 | 1 | 1 | python,linux | 14,185,931 | 2 | false | 0 | 0 | You installed it incorrectly. Instead of make install you should run make altinstall. This will install the new version of Python parallel to existing versions, and create a new executable in $PREFIX/bin with the name of python followed by the minor version of Python installed, e.g. python2.7. | 2 | 0 | 0 | I have installed manually python (2.7.3). Whoc do I update the rpm version
usr/bin/python -V:
Python 2.7.3
rpm -qf /usr/bin/python:
python-2.6.5-3.el6.x86_64
any suggestions?
linux version: RH6.3 | python binary version doesnt match rpm version | 0.099668 | 0 | 0 | 64 |
14,184,589 | 2013-01-06T17:11:00.000 | 0 | 0 | 0 | 1 | eclipse,macos,python-2.7,wxpython | 14,198,642 | 1 | true | 0 | 0 | I always go to Preferences / PyDev / Interpreter - Python. Then add a new interpreter, and just click Add and Apply. Wait until everything is parsed, this takes a while. Then click OK.
Change the interpreter from "Default" to your newly set-up interpreter.
Check if correct interpreter is set for your project. Right-cli... | 1 | 0 | 0 | I've Eclipse, python 2.7, wxpython 2.8, and OSx 10.5.8
I would like wxpython is included correctly in my eclipse environment, to have not all the wxpython commands underlined as errors.
I've imported in the PYTHONPATH, via preferences, the correct path of the wx library. Once I import them manually in the Eclipse, save... | how to set the interpreter of wxpython for eclipse once for all | 1.2 | 0 | 0 | 245 |
14,185,288 | 2013-01-06T18:24:00.000 | 0 | 0 | 1 | 0 | python,virtualenv,virtualenvwrapper | 50,938,501 | 3 | false | 0 | 0 | Virtualenv does not work because it uses local python interpreter.
My solution is to use conda (anoconda or miniconda) to build the environment, so if you need some packages, you can just conda install them. Then copy it to the remote machine and run. | 1 | 9 | 0 | Suppose I have a python interpreter with many modules installed on my local system, and it has been tuned to just work.
Now I want to create a virtualenv to freeze these, so that they won't be broke by upgrading in the future.
How can I make it? Thanks.
I can't use pip freeze, because that's a cluster on which there... | How to create a virtualenv by cloning the current local environment? | 0 | 0 | 0 | 7,361 |
14,185,831 | 2013-01-06T19:22:00.000 | 1 | 1 | 1 | 0 | python,unit-testing | 14,185,895 | 1 | false | 0 | 0 | I usually make one class that handles the setup and tearing down for a particular test topic and subclass it for every single test. That is, one class for every test, with a name that conveys what is being tested. Nothing fancy. | 1 | 0 | 0 | I'm trying learn TDD in python. Unfortunately I have not found any PEPs about unittest.
Does one subclass of unittest.TestCase should contain all tests about one tested function?
What are the recommendations for naming classes, methods or test-files? | Python unittest - division tests into classes/functions | 0.197375 | 0 | 0 | 352 |
14,188,923 | 2013-01-07T02:04:00.000 | 0 | 0 | 0 | 0 | python,excel,xlrd,xlwt,openpyxl | 30,048,138 | 2 | false | 0 | 0 | For "xls" files it's possible to use the xlutils package. It's currently not possible to copy objects between workbooks in openpyxl due to the structure of the Excel format: there are lots of dependencies all over the place that need to be managed. It is, therefore, the responsibility of client code to copy everything ... | 1 | 3 | 0 | I want to compare the value of a given column at each row against another value, and if the values are equal, I want to copy the whole row to another spreadsheet.
How can I do this using Python?
THANKS! | How to copy a row of Excel sheet to another sheet using Python | 0 | 1 | 0 | 14,135 |
14,191,034 | 2013-01-07T06:34:00.000 | 1 | 0 | 0 | 0 | python,django | 14,191,085 | 1 | true | 1 | 0 | What we usually do in our Django projects is create versions of all configuration files for each platform (dev, prod, etc...) and use symlinks to select the correct one. Now that Windows supports links properly, this solution fits everybody.
If you insist on another configuration file, try making it a Python file that ... | 1 | 0 | 0 | I'm building project with Django, I can make two setting files for Django: production_setting.py and development_setting.py, however, I need some configure file for my project and I'm using ConfigParser to parse that files. e.g.
[Section]
name = "development"
version = "1.0"
how to split this configure file to produc... | python project setting for production and developement | 1.2 | 0 | 0 | 150 |
14,191,410 | 2013-01-07T07:08:00.000 | 1 | 0 | 0 | 0 | python,ruby-on-rails,ruby,node.js,webserver | 14,192,830 | 2 | true | 1 | 0 | It all depends on what you are actually trying to do and what your requirements are.
There is no real "right" language for things like these, it's mostly determined by the Frameworks you'll be using on those language (since all are general-purpose programming languages) and your personal preference/experience.
I can't ... | 1 | 2 | 0 | please excuse my ignorance as I'm an Aerospace Engineer going headfirst into the software world.
I'm building a web solution that allows small computers (think beagleboard) to connect to a server that sends and receives data to these clients. The connection will be over many types including GPRS/3G/4G.
The user will in... | Outlining a Solution Stack | 1.2 | 0 | 0 | 98 |
14,191,462 | 2013-01-07T07:12:00.000 | 0 | 0 | 0 | 0 | python,python-2.7 | 14,193,534 | 1 | false | 0 | 1 | The question is vague, but I guess you should use c_char_p instead of POINTER(c_char). | 1 | 0 | 0 | I call foreign c library in my program using ctypes, I don't know how to assign a POINTER(c_char) variant to a string. | How can I assign a variant of POINTER(c_char) type to a string? | 0 | 0 | 0 | 149 |
14,191,487 | 2013-01-07T07:14:00.000 | 1 | 0 | 0 | 0 | python,bioinformatics,pca,biopython,hierarchical-clustering | 28,408,552 | 4 | false | 0 | 0 | I recommend to use R Bioconductor and free software like Expander and MeV. Good flexible choice is a Cluster software with TreeViews. You can also run R and STATA or JMP from your Python codes and completely automate your data management. | 1 | 3 | 1 | I'm trying to analyze microarray data using hierarchical clustering of the microarray columns (results from the individual microarray replicates) and PCA.
I'm new to python. I have python 2.7.3, biopyhton, numpy, matplotlib, and networkx.
Are there functions in python or biopython (similar to MATLAB's clustergram and ... | Microarray hierarchical clustering and PCA with python | 0.049958 | 0 | 0 | 1,029 |
14,194,997 | 2013-01-07T11:29:00.000 | 7 | 0 | 1 | 0 | python,types,dictionary | 14,195,088 | 5 | false | 0 | 0 | The Pythonic way here is to just use a normal dictionary and only add objects of a particular type to it - don't try to enforce the restriction, it shouldn't be necessary.
Edit: To expand my argument, let me explain - you seem to be under the impression that writing good code requires type safety. The first question i... | 1 | 1 | 0 | What's a good way to implement a type safe dictionary in Python (3.2) - a dictionary that will only allow adding objects of a particular type to itself?
I myself have a simple solution: build a wrapper class around the dictionary with an 'addItem' method that does a type check assertion before adding the object. Lookin... | Type safe Python 3.2 dictionary | 1 | 0 | 0 | 998 |
14,201,284 | 2013-01-07T17:50:00.000 | 1 | 0 | 0 | 0 | python,logging,numpy,matplotlib | 14,223,556 | 1 | true | 0 | 0 | Another option for storage could be using hdf5 or pytables. Depending on how you structure the data, with pytables you can query the data at key "points". As noted in comments, I dont think an off the shelf solution exists. | 1 | 1 | 1 | I'm using python to prototype the algorithms of a computer vision system I'm creating. I would like to be able to easily log heterogeneous data, for example: images, numpy arrays, matplotlib plots, etc, from within the algorithms, and do that using two keys, one for the current frame number and another to describe the ... | heterogeneous data logging and analysis | 1.2 | 0 | 0 | 281 |
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