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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12,492,337 | 2012-09-19T09:50:00.000 | 0 | 0 | 1 | 0 | python | 12,492,724 | 3 | false | 0 | 0 | I think the most important thing is to denote your hexagons on the map in a way which makes checking neighbours easy...
One sensible choice could be to use 2D tuples, so that the hexagon (1,1)'s 6 neighbours are (1,0),(2,0),(2,2),(1,2),(0,2) and (1,1) - starting from north/up and going clockwise.
To populate the map yo... | 2 | 0 | 0 | I would like to write for myself a simple map generator and I do not know how to bite. field will have to draw lots hexagonal.
When I generate random tile I must watch for neighbor. Then I have to take into account the already two neighbors, etc. Recursion? I determined that the field may be the water, the earth, the m... | How to write own map generator? | 0 | 0 | 0 | 296 |
12,493,934 | 2012-09-19T11:37:00.000 | 0 | 0 | 1 | 1 | python,string,input,copy-paste | 12,494,019 | 3 | false | 0 | 0 | Use :
input = raw_input("Enter text")
These gets in input as a string all the input. So if you paste a whole text, all of it will be in the input variable.
EDIT: Apparently, this works only with Python Shell on Windows. | 1 | 6 | 0 | Is there any easy way to handle multiple lines user input in command-line Python application?
I was looking for an answer without any result, because I don't want to:
read data from a file (I know, it's the easiest way);
create any GUI (let's stay with just a command line, OK?);
load text line by line (it should paste... | Multiple lines user input in command-line Python application | 0 | 0 | 0 | 6,926 |
12,494,465 | 2012-09-19T12:12:00.000 | 1 | 0 | 0 | 1 | python,ubuntu | 12,494,482 | 1 | true | 0 | 0 | It looks like you need the python 2.5 header files. You might be able to find them in synaptic under python2.5-dev or something similar. | 1 | 0 | 0 | easy_install-2.5 python-ldap
Searching for python-ldap
Reading http://pypi.python.org/simple/python-ldap/
Reading http://www.python-ldap.org/
Best match: python-ldap 2.4.10
Downloading http://pypi.python.org/packages/source/p/python-ldap/python-ldap-2.4.10.tar.gz#md5=a15827ca13c90e9101e5e9405c1d83be
Processing python-l... | easy_install2.5 fails to install python-ldap on Ubuntu 12.04 | 1.2 | 0 | 0 | 1,640 |
12,497,545 | 2012-09-19T15:09:00.000 | 3 | 0 | 0 | 0 | python,numpy,pyramid | 12,497,790 | 2 | false | 0 | 0 | If the array is something that can be shared between threads then you can store it in the registry at application startup (config.registry['my_big_array'] = ??). If it cannot be shared then I'd suggest using a queuing system with workers that can always have the data loaded, probably in another process. You can hack th... | 2 | 1 | 1 | I'd like to perform some array calculations using NumPy for a view callable in Pyramid. The array I'm using is quite large (3500x3500), so I'm wondering where the best place to load it is for repeated use.
Right now my application is a single page and I am using a single view callable.
The array will be loaded from di... | Using NumPy in Pyramid | 0.291313 | 0 | 0 | 409 |
12,497,545 | 2012-09-19T15:09:00.000 | 2 | 0 | 0 | 0 | python,numpy,pyramid | 12,497,850 | 2 | false | 0 | 0 | I would just load it in the obvious place in the code, where you need to use it (in your view, I guess?) and see if you have performance problems. It's better to work with actual numbers than try to guess what's going to be a problem. You'll usually be surprised by the reality.
If you do see performance problems, assum... | 2 | 1 | 1 | I'd like to perform some array calculations using NumPy for a view callable in Pyramid. The array I'm using is quite large (3500x3500), so I'm wondering where the best place to load it is for repeated use.
Right now my application is a single page and I am using a single view callable.
The array will be loaded from di... | Using NumPy in Pyramid | 0.197375 | 0 | 0 | 409 |
12,498,011 | 2012-09-19T15:34:00.000 | 2 | 0 | 1 | 0 | python-2.7,virtualenv,pip,ubuntu-12.04 | 12,583,628 | 1 | true | 1 | 0 | Following @HugoTavares's suggestion I found I needed to install python-dev. I don't know why this helped but it seems to have solved this particular problem. I'm putting this answer on for now but Hugo, if you read this, please post an identical one and I'll remove acceptance on this and accept yours, since you deserve... | 1 | 2 | 0 | Whenever I try to pip install anything in my virtualenvs I am told it is Downloading/Unpacking. My terminal then stays on that line indefinitely. The longest I have left this running was 2 hours (trying to install iPython) without success.
Most recently, I tried installing django in one virtualenv using pip. Once it sa... | Why won't pip install anything? | 1.2 | 0 | 0 | 2,355 |
12,498,694 | 2012-09-19T16:11:00.000 | 1 | 0 | 0 | 0 | php,javascript,python | 12,498,821 | 2 | false | 1 | 0 | I personally love Socket.IO and I would to it with it.
Because it would be simpler a way. But that may be a bit too much work to set up just for that. Especially since it is not that simple in Python from what I heard compare to node where it really is about 10 lines server side.
Without Socket.IO could do a long polli... | 1 | 0 | 0 | Scenario: User loads a page, image is being generated, show loading bar, notification event sent to browser.
I am using python code to generate the image. Would it be ideal to have a web server that launches the script or embed a webserver code into the python script? Once the image is finished rendering, the client sh... | Javascript-Python: serve dynamically generated images to client browser? | 0.099668 | 0 | 1 | 88 |
12,499,465 | 2012-09-19T17:00:00.000 | 0 | 0 | 0 | 0 | python-2.7,tkinter,tix | 38,350,158 | 3 | false | 0 | 1 | Re the roles of Tix and ttk. They are different things. Tix adds widgets to the standard Tkinter set. ttk adds widgets that duplicate existing widgets but with a configurable look 'n feel. So if you want to make your GUI look like the native OS apps use ttk, but you only get a limited set of widgets. If you want more p... | 1 | 6 | 0 | I recently have become interested in GUI programming in Python.
I have already had plenty of experience with Pygame, but find that it would be easier just to use the interface that Tkinter, Tix, etc... provide.
However, I'm having difficulty finding any decent documentation or tutorials on Tix for Python. (Unlike Pygam... | Tix Tutorials in Python | 0 | 0 | 0 | 8,495 |
12,500,623 | 2012-09-19T18:22:00.000 | 1 | 0 | 0 | 0 | python,django,file-upload,django-file-upload | 12,623,702 | 2 | false | 1 | 0 | You can't actually do both of these at once:
I'd like to upload directly these files to the file server.
I'd like to make the file server simple as possible. The file server just serve files.
Under your requirements, the file server needs to both Serves Files and Accepts Uploads of files.
There are a few ways to get ... | 1 | 2 | 0 | I'm using Django 1.4.
There are two servers (app server and file server).
The app server provide a web service using django, wsgi, and apache.
User can upload files via the web service.
I'd like to upload directly these files to the file server.
"directly" means that the files aren't uploaded via the app server.
I'd li... | Django: How to upload directly files submitted by a user to another server? | 0.099668 | 0 | 0 | 1,077 |
12,502,187 | 2012-09-19T20:13:00.000 | 2 | 0 | 1 | 0 | ipython,ipython-notebook | 47,238,955 | 5 | false | 1 | 0 | Click on file > Download > html | 1 | 37 | 0 | What is the best way to get an ipython notebook into html format for use in a blog post?
It is easy to turn an ipython notebook into a PDF, but I'd rather publish as an html notebook.
I've found that if I download the notebook as a .ipynb file, then load it onto gist, then look at it with the ipython notebook viewer (n... | How to export an IPython notebook to HTML for a blog post? | 0.07983 | 0 | 0 | 14,387 |
12,504,096 | 2012-09-19T23:06:00.000 | 0 | 0 | 1 | 0 | python,python-2.7 | 71,479,624 | 5 | false | 0 | 0 | As of python3 you need to use iter() instead of iteritems(), since this function got removed apparently. Just leaving this here, because I got an error using the above-mentioned code. | 1 | 3 | 0 | Given a large dictionary, (actually, a defaultdict) with tens of millions of key-value pairs (strings : integers).
I want to remove about half of the key/value pairs, based on a simple condition (e.g. value > 20) on the values.
What is the fastest way to do this? | Fastest way to remove a lot of keys from a dictionary | 0 | 0 | 0 | 1,482 |
12,504,351 | 2012-09-19T23:41:00.000 | 3 | 0 | 1 | 0 | python,arguments,maintainability | 12,504,392 | 5 | false | 0 | 0 | Using *args in every function is a bad idea because it can mask errors in your code (calling a function with the wrong number of arguments). I suppose the rule of thumb should be to only use *args if you need *args. | 4 | 5 | 0 | I've been looking at the source code for an open source package that I'm using. Nearly every function uses *args instead of named arguments. I'm finding it hard to follow and use the code, because every time I want to call a function I have to go back, pick through the source code, and identify what the arguments sho... | Proper use vs. over use of *args in Python | 0.119427 | 0 | 0 | 610 |
12,504,351 | 2012-09-19T23:41:00.000 | 2 | 0 | 1 | 0 | python,arguments,maintainability | 12,504,396 | 5 | false | 0 | 0 | When there's no compelling reason to use *args, it's an abuse of the concept. Usually there are good names for arguments, which help comprehension. Even when there aren't, (x, y, z) tells you more than (*args).
And beyond making code more readable, it also helps to catch errors (e.g., if you call a (x, y, z) function w... | 4 | 5 | 0 | I've been looking at the source code for an open source package that I'm using. Nearly every function uses *args instead of named arguments. I'm finding it hard to follow and use the code, because every time I want to call a function I have to go back, pick through the source code, and identify what the arguments sho... | Proper use vs. over use of *args in Python | 0.07983 | 0 | 0 | 610 |
12,504,351 | 2012-09-19T23:41:00.000 | 4 | 0 | 1 | 0 | python,arguments,maintainability | 12,504,415 | 5 | true | 0 | 0 | This might be a personal reasoning but I only use *args and **kwargs when I have a lot of optional fields where some fields are only used in a certain context.
The only other occasion I used args is when I was building an XML RPC client for a cloud API. Since I was just passing parameters to an underlying layer and si... | 4 | 5 | 0 | I've been looking at the source code for an open source package that I'm using. Nearly every function uses *args instead of named arguments. I'm finding it hard to follow and use the code, because every time I want to call a function I have to go back, pick through the source code, and identify what the arguments sho... | Proper use vs. over use of *args in Python | 1.2 | 0 | 0 | 610 |
12,504,351 | 2012-09-19T23:41:00.000 | 2 | 0 | 1 | 0 | python,arguments,maintainability | 12,506,414 | 5 | false | 0 | 0 | If you're wrapping an unknown function (the functions returned by decorators often do this), then you often need to use (*args, **kwargs).
Some class hierarchies use (*args, **kwargs) in methods that can need different signatures at different classes in the hierarchies (__init__ is a prime culprit). It's really helpful... | 4 | 5 | 0 | I've been looking at the source code for an open source package that I'm using. Nearly every function uses *args instead of named arguments. I'm finding it hard to follow and use the code, because every time I want to call a function I have to go back, pick through the source code, and identify what the arguments sho... | Proper use vs. over use of *args in Python | 0.07983 | 0 | 0 | 610 |
12,504,951 | 2012-09-20T01:20:00.000 | 1 | 0 | 1 | 0 | python,ipython,pandas | 42,903,054 | 5 | false | 0 | 0 | There is also a magic command, history, that can be used to write all the commands/statements given by user.
Syntax : %history -f file_name.
Also %save file_name start_line-end_line, where star_line is the starting line number and end_line is ending line number. Useful in case of selective save.
%run can be used to exe... | 1 | 22 | 1 | It would be useful to save the session variables which could be loaded easily into memory at a later stage. | Save session in IPython like in MATLAB? | 0.039979 | 0 | 0 | 10,066 |
12,506,222 | 2012-09-20T04:50:00.000 | -1 | 0 | 1 | 0 | python,variables,maya | 12,507,015 | 2 | false | 0 | 0 | Good suggestion. Something user1090427 should watch for is how you they're rounding, if that's an issue at all. Removing the sign before/after rounding can have unexpected results. floor(abs(-29.29)) is 29, and not the same as abs(floor(-29.29)), which is 30. | 1 | 0 | 0 | I'm writing a script for maya, it's in python, but this should relate to most things.
If I run my script on the left side of a setup the values for translation etc will be something like 29.292 or 68.215.
The problem is that the right side is a mirror, so it's -29.292 or -68.215.
I need to check if the symbol '-' exist... | Find a character in a variable and remove it | -0.099668 | 0 | 0 | 99 |
12,508,243 | 2012-09-20T07:53:00.000 | 3 | 0 | 1 | 1 | python,multithreading | 12,508,287 | 5 | false | 0 | 0 | check if you can import _posixsubprocess manually, subprocess tries to import this in it's code, if it produces an exception this warning is produced. | 3 | 7 | 0 | Hi im running a subprocess with threads trough a python wrapper and I get the following warning when I use the subprocess module.
"The _posixsubprocess module is not being used, Child process reliability may suffer if your program uses threads."
What dose this mean?
How can I get rid of it? | Python Error The _posixsubprocess module is not being used | 0.119427 | 0 | 0 | 12,868 |
12,508,243 | 2012-09-20T07:53:00.000 | 3 | 0 | 1 | 1 | python,multithreading | 51,902,409 | 5 | false | 0 | 0 | unsetting PYTHONHOME has fixed this issue for me. | 3 | 7 | 0 | Hi im running a subprocess with threads trough a python wrapper and I get the following warning when I use the subprocess module.
"The _posixsubprocess module is not being used, Child process reliability may suffer if your program uses threads."
What dose this mean?
How can I get rid of it? | Python Error The _posixsubprocess module is not being used | 0.119427 | 0 | 0 | 12,868 |
12,508,243 | 2012-09-20T07:53:00.000 | 0 | 0 | 1 | 1 | python,multithreading | 62,709,088 | 5 | false | 0 | 0 | It could be if you have more than a version of Python in use.
you need to specify the correct version of python to use for each programme.
For example, I need python 3.7 for miniconda, but mendeleydesktop claims for trouble with this version:
also problem with _posixsubproces and its location
so instead of run the prog... | 3 | 7 | 0 | Hi im running a subprocess with threads trough a python wrapper and I get the following warning when I use the subprocess module.
"The _posixsubprocess module is not being used, Child process reliability may suffer if your program uses threads."
What dose this mean?
How can I get rid of it? | Python Error The _posixsubprocess module is not being used | 0 | 0 | 0 | 12,868 |
12,508,796 | 2012-09-20T08:28:00.000 | 5 | 0 | 1 | 0 | python,logging | 12,508,963 | 1 | true | 0 | 0 | The logger classes defined are stored in logging.Logger.manager.loggerDict. | 1 | 3 | 0 | I have several libraries which use the logging library. I want to access all loggers defined in those libraries and set the logging level i want without touching the code of those libraries. I need to that dynamically because i don't know in advance the loggers those libraries will define
How would you do that? | Access all defined loggers with logging library in Python | 1.2 | 0 | 0 | 79 |
12,509,420 | 2012-09-20T09:07:00.000 | 1 | 0 | 1 | 0 | python,regex | 12,509,479 | 4 | false | 0 | 0 | Something like this? r"(?<=XYZ)((?:ABC)+)". This will match only the occurrences of ABC when they follow XYZ, but will not include XYZ itself.
EDIT
Looks like I misunderstood OP's original question. The easiest way to do this would be to first find the string XYZ. Save the starting position of XYZ. Use the starting po... | 1 | 2 | 0 | I am trying to write a regular expression which would match any occurrence of ABC following XYZ anywhere in the string :
Ex. text - "Some ABC text followed by XYZ followed by multiple ABC, more ABC, more ABC"
i.e., the regex should match three ABC's coming after XYZ.
Any clues? | Regex for matching any occurrence of ABC following XYZ anywhere in the string | 0.049958 | 0 | 0 | 1,674 |
12,511,801 | 2012-09-20T11:37:00.000 | 2 | 0 | 1 | 0 | python | 12,511,861 | 5 | false | 0 | 0 | What are you asking is not possible, since you cannot have two different keys with the same value in a Python dictionary.
The closest answer to your question is:
D3 = dict( D1.items() + D2.items() )
Note: if you have different values for the same key, the ones from D2 will be the ones in D3.
Example:
D1 = { 'a':1, 'b'... | 1 | 19 | 0 | I have two dictionaries as follows:
D1={'a':1,'b':2,'c':3}
and
D2={'b':2,'c':3,'d':1}
I want to merge these two dictionaries and the result should be as follows:
D3={'a':1,'b':2,'c':3,'b':2,'c':3,'d':1}
how can I achieve this in python? | Merging of two dictionaries | 0.07983 | 0 | 0 | 3,838 |
12,513,403 | 2012-09-20T13:13:00.000 | 10 | 0 | 1 | 0 | python,regex,string | 12,513,455 | 2 | true | 0 | 0 | find only matches an exact sequence of characters, while a regular expression matches a pattern. Naturally only looking an for exact sequence is faster (even if your regex pattern is also an exact sequence, there is still some overhead involved).
As a consequence of the above, you should use find if you know the exact ... | 2 | 1 | 0 | I am learning Python, and need to format "From" fields received from IMAP. I tried it using str.find() and str.strip(), and also using regex. With find(), etc. my function runs quite a bit faster than with re (I timed it). So, when is it better to use re? Does anybody have any good links/articles related to that? Pytho... | Python: regex vs find(), strip() | 1.2 | 0 | 0 | 2,085 |
12,513,403 | 2012-09-20T13:13:00.000 | 3 | 0 | 1 | 0 | python,regex,string | 12,513,461 | 2 | false | 0 | 0 | If you intend to do something complex you should use re . It is more scalable than using string methods.
String methods are good for doing something simple and not worth bothering with regular expressions.
So, it depends on what are you doing, but usually you should use regular expressions since they are more powerful. | 2 | 1 | 0 | I am learning Python, and need to format "From" fields received from IMAP. I tried it using str.find() and str.strip(), and also using regex. With find(), etc. my function runs quite a bit faster than with re (I timed it). So, when is it better to use re? Does anybody have any good links/articles related to that? Pytho... | Python: regex vs find(), strip() | 0.291313 | 0 | 0 | 2,085 |
12,519,074 | 2012-09-20T18:56:00.000 | 1 | 0 | 0 | 0 | python,screen-scraping,scraper | 12,529,766 | 3 | false | 1 | 0 | Finding the url of the ajax source will be the best option but it can be cumbersome for certain sites. Alternatively you could use a headless browser like QWebKit from PyQt and send keyboard events while reading the data from the DOM tree. QWebKit has a nice and simple api. | 1 | 31 | 0 | I have written many scrapers but I am not really sure how to handle infinite scrollers. These days most website etc, Facebook, Pinterest has infinite scrollers. | scrape websites with infinite scrolling | 0.066568 | 0 | 1 | 29,452 |
12,519,610 | 2012-09-20T19:29:00.000 | 0 | 0 | 1 | 1 | python,file,io,exe,.app | 12,520,441 | 2 | false | 0 | 0 | Use the __file__ variable. This will give you the filename of your module. Using the functions in os.path you can determine the full path of the parent directory of your module. The os.path module is in the standard python documentation, you should be able to find that.
Then you can combine the module path with your f... | 1 | 2 | 0 | I have a python script which reads a text file in it's current working directory called "data.txt" then converts the data inside of it into a json format for another separate program to handle.
The problem i'm having is that i'm not sure how to read the .txt file (and write a new one) which is in the same directory as ... | Python app which reads and writes into its current working directory as a .app/exe | 0 | 0 | 0 | 1,641 |
12,521,189 | 2012-09-20T21:29:00.000 | 11 | 0 | 1 | 0 | python,arrays | 12,521,210 | 3 | false | 0 | 0 | It just means a one element list containing just a 0. Multiplying by memloadsize gives you a list of memloadsize zeros. | 1 | 11 | 0 | I'm familiar with programming but new to python:
mem = [0] * memloadsize
what does the '[0]' represent?
Is it a built-in array? | What does '[0]' mean in Python? | 1 | 0 | 0 | 40,845 |
12,522,080 | 2012-09-20T22:53:00.000 | 0 | 1 | 1 | 0 | python,logging | 12,523,536 | 2 | false | 1 | 0 | I'm assuming you mean import logging imports a different logging module? In this case, there are many special attributes of modules/packages that can help, such as __path__. Printing logging.__path__ should tell you where python is importing it from. | 1 | 4 | 0 | How would I be able to find which module is overriding the Python root logger?
My Django project imports from quite a few external packages, and I have tried searching for all instances of logging.basicConfig and logging.root setups, however most of them are in tests and should not be overriding it unless specifically ... | Finding out which module is setting the root logger | 0 | 0 | 0 | 205 |
12,522,136 | 2012-09-20T23:00:00.000 | 2 | 0 | 0 | 0 | python,mysql,web | 12,522,631 | 2 | false | 1 | 0 | If you have MySQL installed on your machine along with Python, get a version of MySQLDb library for Python and have fun with it. Moreover, you can do almost any data operation with these combinations. If you want your website to go live (and do not wish to go through web frameworks) just look for a hosting plan that gi... | 1 | 0 | 0 | I currently simply have a local website on my Mac. I can view the webpage's HTMl and CSS and run the javascript functions in browser on my computer, but the next step I want to take is incorporating python scripts for accessing a MySQL database and returning results.
I am clearly new to this, and would love some guida... | What do I need to successfully run a website in my browser that executes Python scripts? | 0.197375 | 0 | 0 | 132 |
12,522,160 | 2012-09-20T23:03:00.000 | 2 | 0 | 0 | 1 | python,google-app-engine,app-engine-ndb | 12,522,188 | 3 | true | 1 | 0 | You could add another field for the date. A ComputedProperty would probably make sense for that.
Or you could fetch from the start of the day, in batches, and stop fetching once you reach the end of your day. I'd imagine you could come up with a sensible default based on how many appointments you'd typically have in on... | 2 | 1 | 0 | I have an application on app engine, and this application has an entity called Appointment. An Appointment has a start_time and a end_time. I want to fetch appointments based on the time, so I want to get all appointments for a given day, for example.
Since app engine doesn't support inequality query based on two fiel... | How to fetch time-based entity from datastore in app engine | 1.2 | 0 | 0 | 391 |
12,522,160 | 2012-09-20T23:03:00.000 | 1 | 0 | 0 | 1 | python,google-app-engine,app-engine-ndb | 12,535,660 | 3 | false | 1 | 0 | The biggest problem is that a "date" means a different start and end "time" depending on a time zone of a user. And you cannot force all of your users to stick to one time zone all of the lives, not to mention DST changes twice a year. So you cannot simply create a new property in your entity to store a "date" object a... | 2 | 1 | 0 | I have an application on app engine, and this application has an entity called Appointment. An Appointment has a start_time and a end_time. I want to fetch appointments based on the time, so I want to get all appointments for a given day, for example.
Since app engine doesn't support inequality query based on two fiel... | How to fetch time-based entity from datastore in app engine | 0.066568 | 0 | 0 | 391 |
12,522,844 | 2012-09-21T00:38:00.000 | 0 | 1 | 0 | 0 | python-3.x | 12,522,892 | 3 | false | 0 | 0 | Maybe you could create a temporary directory using tempfile.tempdir and generate the filenames manually such as file1, file2, ..., filen . This way you easily avoid "_" characters and you can just delete the temporary directory after you are finished with that. | 1 | 3 | 0 | I'm writing a python3 program that generates a text file that is post-procesed with asciidoc for the final report in html and pdf.
The python program generates thousands files with graphics to be included in the final report. The filenames for the files are generated with tempfile.NamedTemporaryFile
The problem it that... | change character set for tempfile.NamedTemporaryFile | 0 | 0 | 0 | 491 |
12,527,309 | 2012-09-21T08:57:00.000 | 0 | 1 | 0 | 0 | python,port,gsm | 12,527,528 | 1 | false | 0 | 0 | Sorry I donot know the python syntaxes, just an idea to follow. You can use SerialPort.GetPortNames(); to get the list of available ports in your system.
And then send an AT command to each port. Which ever port responds with an OK , it means that your modem is connected to that port. | 1 | 0 | 0 | Is there any way to read GSM modem port number programmatically using Python, when I connect mobile to Windows XP machine? | Programmatically read GSM modem port number | 0 | 0 | 0 | 894 |
12,532,465 | 2012-09-21T14:24:00.000 | 1 | 1 | 0 | 0 | python,django,pydev | 12,535,217 | 1 | true | 1 | 0 | The Django test runner can be accessed by creating a new (Run or Debug) configuration for your project using the Django template. Set your main module as manage.py and under the Arguments tab enter "test" (or any other manage.py arguments you need). | 1 | 0 | 0 | It is a django project. I am using pydev 2.6. How do I make it to use the Django test runner? | pydev with eclipse does create test database when running test | 1.2 | 0 | 0 | 234 |
12,532,631 | 2012-09-21T14:34:00.000 | 0 | 1 | 0 | 0 | python,audio,loops,playback | 31,437,197 | 1 | false | 1 | 0 | I am using PyAudio for a lot of things and are quite happy with it. If it can do this, I do not know, but I think it can.
One solution is to feed sound buffer manually and control / set the needed latency. I have done this and it works quite well. If you have the latency high enough it will work.
An other solution, s... | 1 | 4 | 0 | I'm writing an application to simulate train sounds. I got very short (0.2s) audio samples for every speed of the train and I need to be able to loop up to 20 of them (one for every train) without gaps at the same time.
Gapless changing of audio samples (train speed) is also a Must-Have.
I've been searching for possibl... | Python Audio library for fast, gapless looping of many short audio tracks | 0 | 0 | 0 | 1,335 |
12,533,013 | 2012-09-21T14:56:00.000 | 0 | 0 | 1 | 0 | python,search,queue | 12,535,201 | 2 | false | 0 | 0 | There is not a means of doing that. The point of a queue is that you just do puts and gets on it.
If you need to search a queue, you could get the first element, save a reference to it, put it back into the queue and then do gets and puts till you get back to the first element (assuming that you only have one thread p... | 1 | 0 | 0 | How one would search or browse messages stored in a queue.Queue instance?
Is it possible to do so without actually getting each message, checking its content, and putting it back? | python: search and browse messages in the queue | 0 | 0 | 0 | 213 |
12,533,745 | 2012-09-21T15:40:00.000 | 3 | 0 | 0 | 0 | python,web-services,web-applications,flask,blueprint | 24,216,134 | 4 | false | 1 | 0 | I wish the Blueprint object has a register_blueprint function just as the Flask object does. It would automatically place and registered blueprints under the current Blueprints' url. | 1 | 6 | 0 | I have a series of blueprints I'm using, and I want to be able to bundle them further into a package I can use as seamlessly as possible with any number of other applications. A bundle of blueprints that provides an entire engine to an application. I sort of created my own solution, but it is manual and requires too mu... | blueprint of blueprints (Flask) | 0.148885 | 0 | 0 | 6,797 |
12,534,813 | 2012-09-21T16:54:00.000 | 1 | 0 | 0 | 0 | python,r,3d,interpolation,splines | 12,536,067 | 2 | true | 0 | 0 | By "compact manifold" do you mean a lower dimensional function like a trajectory or a surface that is embedded in 3d? You have several alternatives for the surface-problem in R depending on how "parametric" or "non-parametric" you want to be. Regression splines of various sorts could be applied within the framework of ... | 1 | 2 | 1 | I have data points in x,y,z format. They form a point cloud of a closed manifold. How can I interpolate them using R-Project or Python? (Like polynomial splines) | How interpolate 3D coordinates | 1.2 | 0 | 0 | 1,960 |
12,538,723 | 2012-09-21T22:00:00.000 | 0 | 0 | 1 | 0 | python | 12,538,960 | 3 | false | 0 | 0 | A hash is way of calculating an unique code for an object, this code always the same for the same object. hash('test') for example is 2314058222102390712, so is a = 'test'; hash(a) = 2314058222102390712.
Internally a dictionary value is searched by the hash, not by the variable you specify. A list is mutable, a hash f... | 1 | 2 | 0 | What does this mean?
The only types of values not acceptable as dictionary keys are values containing lists or dictionaries or other mutable types that are compared by value rather than by object identity, the reason being that the efficient implementation of dictionaries requires a key’s hash value to remain constan... | when compare by id is used in Python? Dictionary key comparison? | 0 | 0 | 0 | 365 |
12,540,395 | 2012-09-22T03:19:00.000 | 1 | 0 | 1 | 0 | python,string | 12,540,618 | 1 | true | 0 | 0 | You mean something like this?
re.sub(r'([aeoiu])', r'ab\1', 'program') -> 'prabograbam'
re.sub(r'([aeoiu])', r'\1b\1', 'dog') -> 'dobog'
or
re.sub(r'([aeoiu]+)', r'ab\1', 'tooth') -> 'tabooth'
re.sub(r'(([aeoiu])[aeoiu]*)', r'\2b\1', 'boat') -> 'boboat | 1 | 0 | 0 | I'm trying to replace vowels/syllables in words with other text..for example:
Word entered: program
Text to replace syllables/vowels with: ab
Result: pr**ab**ogr**ab**am
AND if there is a wildcard (*) entered such as:
Word entered: dog
Text to replace syllables/vowels with: *b
Result: d**ob**og, where * is replaced wit... | How to Add a Character to an Existing String in Python | 1.2 | 0 | 0 | 606 |
12,540,435 | 2012-09-22T03:28:00.000 | 3 | 0 | 1 | 1 | python,python-2.7 | 14,970,445 | 3 | false | 0 | 0 | For what it's worth, the answer to the fundamental problem here is that the pytz installation process didn't actually extract the ".egg" file (at least, this is what I noticed with a very similar issue.)
You may consider going into the site-packages folder and extracting it yourself. | 2 | 6 | 0 | Today is my first day at Python and have been going through problems. One that I was working on was, "Write a short program which extracts the current date and time from the operating system and prints it on screen in the following format: day, month, year, current time in GMT.
Demonstrate that it works."
I was going ... | Import Error: No module named pytz after using easy_install | 0.197375 | 0 | 0 | 21,691 |
12,540,435 | 2012-09-22T03:28:00.000 | 3 | 0 | 1 | 1 | python,python-2.7 | 27,397,683 | 3 | false | 0 | 0 | It is important if you are using python v2 or python v3 - it has separate easy_install package!
In debian there are:
python-pip
python3-pip
and then
easy_install
easy_install3
If you use wrong version of easy_install you will be updating wrong libraries. | 2 | 6 | 0 | Today is my first day at Python and have been going through problems. One that I was working on was, "Write a short program which extracts the current date and time from the operating system and prints it on screen in the following format: day, month, year, current time in GMT.
Demonstrate that it works."
I was going ... | Import Error: No module named pytz after using easy_install | 0.197375 | 0 | 0 | 21,691 |
12,542,111 | 2012-09-22T08:22:00.000 | 1 | 0 | 1 | 0 | python | 12,543,014 | 4 | false | 0 | 0 | For some reason, many Python programmers combine the class and its implementation in the same file; I like to separate them, unless it is absolutely necessary to do so.
That's easy. Just create the implementation file, import the module in which the class is defined, and you can call it directly.
So, if the c... | 1 | 7 | 0 | I am a Python beginner and my main language is C++. You know in C++, it is very common to separate the definition and implementation of a class. (How) Does Python do that? If not, how to I get a clean profile of the interfaces of a class? | Separating class definition and implementation in python | 0.049958 | 0 | 0 | 3,065 |
12,545,418 | 2012-09-22T16:07:00.000 | 3 | 0 | 0 | 0 | python,django,apache,webserver,openshift | 12,546,511 | 1 | false | 1 | 0 | How about this:
Use nginx to serve static files
Keep the files in some kind of predefined directory structure, build a django app as the dashbord with the filesystem as the backend. That is, moving, adding or deleting files from the dashboard changed them the filesystem and nginx doesn't have to be aware of this dashb... | 1 | 0 | 0 | I am thinking to design my own web app to serve static files. I just don't want to use Amazon services..
So, can anyone tell me how to start the project? I am thinking to develop in Python - Django on Openshift (Redhat's).
This is how ideas are going through in my mind:
A dashboard helps me to add/ delete/ manage sta... | A web application to serve static files | 0.53705 | 0 | 0 | 402 |
12,550,810 | 2012-09-23T08:27:00.000 | 5 | 0 | 1 | 0 | python,flask,python-babel,flask-babel | 12,559,877 | 1 | false | 1 | 0 | Babel does support Japanese and indeed, the error comes because 'jp' is not a valid locale.
Babel uses language codes from CLDR (which I believe are the standardized language codes from ISO et al). In your case the confusion comes from the language/territory split ('de' for German language, 'AT' for Austrian territory,... | 1 | 0 | 0 | I am having issues with Flask-babel. I cant create a translation for Japanese.
pybabel: error: unknown locale 'jp'
Is this a Flask-Babel issue?
That is the same error when a language does not exists. But, german works. So.....babel does nit support Japanese?
Is there an alternative to Babel that support a major l... | Flask-Babel -0 pybabel: error: unknown locale 'jp' | 0.761594 | 0 | 0 | 1,091 |
12,552,890 | 2012-09-23T13:51:00.000 | 0 | 0 | 0 | 1 | python,hadoop,hadoop-streaming | 12,556,901 | 1 | true | 0 | 0 | After reviewing sent_tokenize's source code, it looks like the nltk.sent_tokenize AND the nltk.tokenize.sent_tokenize methods/functions rely on a pickle file (one used to do punkt tokenization) to operate.
Since this is Hadoop-streaming, you'd have to figure out where/how to place that pickle file into the zip'd code ... | 1 | 0 | 0 | I've seen a technique (on stackoverflow) for executing a hadoop streaming job using zip files to store referenced python modules.
I'm having some errors during the mapping phase of my job's execution. I'm fairly certain it's related to the zip'd module loading.
To debug the script, I have run my data set through sys.st... | hadoop streaming with python modules | 1.2 | 0 | 0 | 1,087 |
12,553,197 | 2012-09-23T14:36:00.000 | 0 | 0 | 0 | 0 | python,perl,language-agnostic | 12,553,211 | 2 | false | 1 | 0 | If you know what each field is supposed to be, perhaps you could write a regular expression which would match that field type only (ignoring tildes) and capture the match, then replace the original string in the file? | 1 | 1 | 0 | I am provided with text files containing data that I need to load into a postgres database.
The files are structured in records (one per line) with fields separated by a tilde (~). Unfortunately it happens that every now and then a field content will include a tilde.
As the files are not tidy CSV, and the tilde's not e... | Messed up records - separator inside field content | 0 | 1 | 0 | 111 |
12,556,309 | 2012-09-23T21:14:00.000 | 4 | 0 | 0 | 1 | python,asynchronous,task,celery,aggregation | 12,705,857 | 2 | false | 1 | 0 | An easy way to accomplish this is to write all the actions a task should take on a persistent storage (eg. database) and let a periodic job do the actual process in one batch (with a single connection).
Note: make sure you have some locking in place to prevent the queue from being processes twice!
There is a nice examp... | 1 | 13 | 0 | I'm planning to use Celery to handle sending push notifications and emails triggered by events from my primary server.
These tasks require opening a connection to an external server (GCM, APS, email server, etc). They can be processed one at a time, or handled in bulk with a single connection for much better performanc... | Celery Task Grouping/Aggregation | 0.379949 | 0 | 0 | 3,185 |
12,556,629 | 2012-09-23T22:00:00.000 | 1 | 0 | 1 | 0 | python | 12,556,648 | 3 | false | 0 | 0 | Creating new local variables will not overwrite the local variables from previous calls. Every time you call the function, you get new local variables. If the function calls itself recursively, each call will get its own local variables. It's difficult to tell from your explanation if this is the answer to your ques... | 1 | 1 | 0 | I've read that you should never test for the existence of a variable; if your program has to check whether a variable exists, you don't "know your variables" and it is a design error. However, I have a recursive function that adds values to a dictionary and a list during each call to the function. In order to avoid dec... | Declaring empty variables at the beginning of a recursive function | 0.066568 | 0 | 0 | 1,270 |
12,557,562 | 2012-09-24T00:47:00.000 | 0 | 0 | 1 | 0 | python,algorithm,optimization,pygame,key-bindings | 12,557,972 | 1 | true | 0 | 1 | It is rather unlikely that dictionary search for response to a user event would cause any noticeable delay on the program. There is something going wrong in your code.
Btw, dict and set search in Python is O(log(1)) - but for 105 keys, or even, if you count modifiers applied, about 1000 different keybindngs could be... | 1 | 0 | 0 | I am making a drawing program in python with pygame right now. The interface is supposed to be vimesque, allowing the user to control most things with key presses and entering commands. I want to allow live binding of the buttons; the user should be able to change which keycode corresponds to which function. In my curr... | Dynamic key binding in python | 1.2 | 0 | 0 | 280 |
12,560,963 | 2012-09-24T07:56:00.000 | 1 | 0 | 0 | 0 | python,flask,jinja2 | 12,561,340 | 2 | false | 1 | 0 | If you allow users to upload arbitrary jinja2 templates, you allow them arbitrary html and javascript and thus become a web hosting company, with all the consequences.
You also have to be careful with the variables you give them access to, so that private user data (if any) is kept separated from each other. | 1 | 6 | 0 | I am writing a web application where users can create their own designs. The easiest way to do this would be by allowing them to upload their own Jinja 2 templates. However, I’m concerned about the security.
What are things I should be cautious for? Should I set a custom Jinja 2 environment for this? | User-generated Jinja 2 templates with Flask | 0.099668 | 0 | 0 | 576 |
12,565,351 | 2012-09-24T12:49:00.000 | 0 | 0 | 1 | 0 | numpy,python-2.7,scipy | 12,616,286 | 1 | true | 0 | 0 | EPD distribution saved the day. | 1 | 0 | 1 | I've installed new instance of python-2.7.2 with brew. Installed numpy from pip, then from sources. I keep getting
numpy.distutils.npy_pkg_config.PkgNotFound: Could not find file(s) ['/usr/local/Cellar/python/2.7.2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/lib/npy-pkg-config/npyma... | Trouble installing scipy on Mac OSX Lion | 1.2 | 0 | 0 | 253 |
12,566,049 | 2012-09-24T13:27:00.000 | 1 | 0 | 0 | 0 | javascript,python,cgi | 12,566,448 | 2 | false | 1 | 0 | As Lajos Arpad wrote, you should send notification to the server when the page is unloaded (XmlHTTPRequest in onbeforeunload event for example); but beware, that it will not be bulletproof - for example if user resets his/her machine, or forces killing browser process ungracefully (unix kill -9 for example), the browse... | 2 | 0 | 0 | Using a python cgi script and I have a form with both a Submit and Cancel button.
When a user tries to leave the web page by clicking Cancel, closing the window or hitting the back button, I want to delete a file that exists on the server. The file name is dependent on the values in the form.
When the user clicks t... | Delete Server File When Exiting from Web Page | 0.099668 | 0 | 0 | 457 |
12,566,049 | 2012-09-24T13:27:00.000 | 0 | 0 | 0 | 0 | javascript,python,cgi | 12,566,229 | 2 | true | 1 | 0 | You can't access server files using Javascript because of security reasons. However, you can make a postback in the onbeforeunload event and on the server-side event (which handles this postback) you can delete the server file(s) to be deleted. | 2 | 0 | 0 | Using a python cgi script and I have a form with both a Submit and Cancel button.
When a user tries to leave the web page by clicking Cancel, closing the window or hitting the back button, I want to delete a file that exists on the server. The file name is dependent on the values in the form.
When the user clicks t... | Delete Server File When Exiting from Web Page | 1.2 | 0 | 0 | 457 |
12,568,725 | 2012-09-24T16:01:00.000 | 1 | 0 | 0 | 0 | python,mysql,django | 12,568,898 | 1 | true | 1 | 0 | It depends a lot on what you plan on doing with the data. However, thinking long term you're going to have much more flexibility with breaking out the friends into distinct units than just storing them all together.
If the friend creation process is taking too long, you should consider off-loading it to a separate proc... | 1 | 0 | 0 | right now I think i'm stuck between two main choices for grabbing a user's friends list.
The first is a direct connection with facebook, and the pulling the friends list out and creating a list of friend models with the json. (Takes quite a while whenever I try it out, like 2 seconds?)
The other is whenever a user log... | Big mysql query versus an http post connection in terms of long term speed | 1.2 | 0 | 0 | 34 |
12,569,076 | 2012-09-24T16:24:00.000 | 5 | 0 | 1 | 0 | python | 14,501,078 | 1 | false | 0 | 0 | there is a python icon on the interface .click and change | 1 | 2 | 0 | Suppose I have both Python 2 and Python 3 installed.
In WingIDE 101, how do I choose whether I am using Python 2 or Python 3?
For example, I was currently working with python 3 and now I need to use the image module which is only supported in python 2. How do I change it?
Thanks. | WingIDE -- Python 2 and Python 3 | 0.761594 | 0 | 0 | 609 |
12,570,465 | 2012-09-24T18:09:00.000 | 0 | 0 | 0 | 0 | python,amazon-s3,amazon | 56,126,467 | 12 | false | 1 | 0 | Given that encryption at rest is a much desired data standard now, smart_open does not support this afaik | 2 | 38 | 0 | Is there any feasible way to upload a file which is generated dynamically to amazon s3 directly without first create a local file and then upload to the s3 server? I use python. Thanks | How to upload a file to S3 without creating a temporary local file | 0 | 1 | 1 | 52,339 |
12,570,465 | 2012-09-24T18:09:00.000 | 2 | 0 | 0 | 0 | python,amazon-s3,amazon | 12,570,568 | 12 | false | 1 | 0 | I assume you're using boto. boto's Bucket.set_contents_from_file() will accept a StringIO object, and any code you have written to write data to a file should be easily adaptable to write to a StringIO object. Or if you generate a string, you can use set_contents_from_string(). | 2 | 38 | 0 | Is there any feasible way to upload a file which is generated dynamically to amazon s3 directly without first create a local file and then upload to the s3 server? I use python. Thanks | How to upload a file to S3 without creating a temporary local file | 0.033321 | 1 | 1 | 52,339 |
12,573,915 | 2012-09-24T22:40:00.000 | 1 | 0 | 0 | 1 | python,google-app-engine,caching,distributed-caching,image-caching | 12,585,067 | 3 | false | 1 | 0 | Blobstore is fine.
Just make sure you set the HTTP cache headers in your url handler. This allows your files to be either cached by the browser (in which case you pay nothing) or App Engine's Edge Cache, where you'll pay for bandwidth but not blobstore accesses.
Be very careful with edge caching though. If you set an... | 1 | 0 | 0 | I am running a website on google app engine written in python with jinja2. I have gotten memcached to work for most of my content from the database and I am fuzzy on how I can increase the efficiency of images served from the blobstore. I don't think it will be much different on GAE than any other framework but I wan... | Options for Image Caching | 0.066568 | 0 | 0 | 717 |
12,575,987 | 2012-09-25T03:56:00.000 | 0 | 0 | 1 | 0 | python,alignment | 12,576,250 | 2 | false | 0 | 0 | try to read in FASTA file and store each sequence as string. You can certainly organize the sequences in a dictionary using text in the '<' line as key.
If a gene is of the same length as a reference sequence without mutation, [i for i, a in enumerate(gene) if a != reference[i]] will return a list of position of mutat... | 1 | 1 | 0 | I have a FASTA file with an alignment of multiple gene samples. I am trying to develop a program that can count the number of mutations for each sample. What's the best way to do this? Store each gene sample in a dictionary and compare them somehow? | Using python to count nucleotide mutations in an alignment | 0 | 0 | 0 | 1,907 |
12,576,724 | 2012-09-25T05:34:00.000 | 4 | 0 | 1 | 0 | python,unit-testing,python-3.x,arguments,software-design | 12,576,771 | 2 | true | 0 | 0 | There are numerous functions in the python standard library which accept both -- strings which are filenames or open file objects (I assume that's what you're referring to as a "stream"). It's really not hard to create a decorator that you can use to make your functions accept either one.
One serious drawback to usi... | 1 | 14 | 0 | If a function takes as an input the name of a text file, I can refactor it to instead take a file object (I call it "stream"; is there a better word?). The advantages are obvious - a function that takes a stream as an argument is:
much easier to write a unit test for, since I don't need to create a temporary file just... | file name vs file object as a function argument | 1.2 | 0 | 0 | 3,700 |
12,577,045 | 2012-09-25T06:05:00.000 | 8 | 0 | 0 | 0 | python,ios,django,api,django-socialauth | 12,587,020 | 1 | true | 1 | 0 | You cannot use django-social-auth directly.
To do Facebook login, you need to use the Facebook SDK for iOS (https://developers.facebook.com/docs/reference/iossdk/).
It will return you the access token which you would send to your API created using TastyPie.
When you have the access token, you can register a new user ba... | 1 | 2 | 0 | I'm building out an API using tastypie for an iOS app.
I can handle normal authentication / authorization just fine but I'm a bit confused when it comes to using django-social-auth to register / login / link THROUGH Tastypie.
If I'd, for example like to authenticate or register users on an iOS app using django-social-... | Log in with Django-social-auth & tastypie on iOS | 1.2 | 0 | 0 | 1,488 |
12,578,021 | 2012-09-25T07:20:00.000 | 0 | 1 | 0 | 1 | android,python,centos,monkeyrunner,rpyc | 12,593,620 | 2 | false | 0 | 0 | Using this function to run monekyrunner doesn't work although running ls, pwd works fine.
conn.modules.subprocess.Popen("/opt/android-sdk/tools/monkeyrunner -v
ALL
/opt/android-sdk/tools/MYSCRIPT.py", shell=True)
The chunk of code below solved my problem :
import rpyc
import subprocess , os
conn = rpyc.classic.... | 1 | 2 | 0 | I need to run a monkeyrunner script in a remote machine. I'm using python to to automate it and RPyC so that I could connect to other machines, everything is running in CentOS.
written below is the command that I used:
import rpyc
import subprocess
conn = rpyc.classic.connect("192.XXX.XXX.XXX",XXXXX)
conn.execute ("pr... | why is monkeyrunner not working when run from a remote machine? | 0 | 0 | 0 | 1,078 |
12,580,198 | 2012-09-25T09:37:00.000 | 2 | 0 | 0 | 0 | python,arrays,numpy,gtk,glade | 12,638,921 | 2 | true | 0 | 1 | In the end i decided to create a buffer for the pixels using:
self.pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,0,8,1280,1024)
I then set the image from the pixel buffer:
self.liveImage.set_from_pixbuf(self.pixbuf) | 1 | 2 | 1 | I'm making live video GUI using Python and Glade-3, but I'm finding it hard to convert the Numpy array that I have into something that can be displayed in Glade. The images are in black and white with just a single value giving the brightness of each pixel. I would like to be able to draw over the images in the GUI so ... | How do you display a 2D numpy array in glade-3 ? | 1.2 | 0 | 0 | 760 |
12,581,463 | 2012-09-25T10:51:00.000 | 0 | 0 | 1 | 1 | python | 12,581,615 | 2 | false | 0 | 0 | If you have "Wake On Lan" enabled you could potentially run a python script on a different PC and trigger the wake up after your specific period of time.
The scripts would probably need to talk to each other, unless you just do it all at times set in advance. | 1 | 2 | 0 | While the copy is in progress, can we put a PC into sleep mode for a specific period of time, then wake up and continue copy using python script? Can you please share the code?
Actually this is possible using shell script. | How to put a PC into sleep mode using python? | 0 | 0 | 0 | 1,160 |
12,581,638 | 2012-09-25T11:03:00.000 | 6 | 1 | 1 | 0 | python,python-interactive | 12,581,642 | 1 | true | 0 | 0 | That can be done using the -i option. Quoting the interpreter help text:
-i : inspect interactively after running script; forces a prompt even
if stdin does not appear to be a terminal; also PYTHONINSPECT=x
So the interpreter runs the script, then makes the interactive prompt available after execution.
E... | 1 | 6 | 0 | When working on a project my scripts often have some boiler-plate code, like adding paths to sys.path and importing my project's modules. It gets tedious to run this boiler-plate code every time I start up the interactive interpreter to quickly check something, so I'm wondering if it's possible to pass a script to the ... | Is it possible to get the Python Interactive Interpreter to run a script on load? | 1.2 | 0 | 0 | 422 |
12,582,140 | 2012-09-25T11:36:00.000 | 1 | 0 | 0 | 0 | python,arrayfire | 12,584,253 | 2 | false | 0 | 0 | bottleneck is worth looking into. They have performed several optimizations over the numpy.nanxxx functions which, in my experience, makes it around 5x faster than numpy. | 1 | 3 | 1 | I'm using Arrayfire on Python and I can't use the af.sum() function since my input array has NaNs in it and it would return NAN as sum.
Using numpy.nansum/numpy.nan_to_num is not an option due to speed problems.
I just need a way to convert those NaNs to floating point zeros in arrayfire. | Check Arrayfire Array against NaNs | 0.099668 | 0 | 0 | 299 |
12,585,286 | 2012-09-25T14:35:00.000 | 0 | 0 | 0 | 0 | java,python,hadoop,hbase,thrift | 21,502,085 | 3 | false | 1 | 0 | Phoenix is a good solution for low latency result from Hbase tables than Hive.
It is good for range scans than Hbase scanners because they use secondary indexes and SkipScan.
As in your case , you use Python and phoenix API have only JDBC connectors.
Else Try Hbase Coprocessors. Which do SUM, MAX, COUNT,AVG functions.
... | 1 | 0 | 0 | I have the below setup
2 node hadoop/hbase cluster with thirft server running on hbase.
Hbase has a table with 10 million rows.
I need to run aggregate queries like sum() on the hbase table
to show it on the web(charting purpose).
For now I am using python(thrift client) to get the dataset and display.
I am looking f... | Hadoop Hbase query | 0 | 1 | 0 | 1,019 |
12,590,058 | 2012-09-25T19:49:00.000 | 9 | 0 | 1 | 0 | python,performance | 12,590,177 | 4 | false | 0 | 0 | The time that you are not including is the programmer time spent tracking down the bugs created when using a global has a side effect somewhere else in your program. That time is many times greater than the time spent creating and freeing local variables, | 1 | 31 | 0 | I am still new to Python, and I have been trying to improve the performance of my Python script, so I tested it with and without global variables. I timed it, and to my surprise, it ran faster with global variables declared rather than passing local vars to functions. What's going on? I thought execution speed was fast... | Performance with global variables vs local | 1 | 0 | 0 | 23,896 |
12,590,492 | 2012-09-25T20:24:00.000 | 1 | 0 | 0 | 0 | python,django | 12,590,919 | 2 | false | 1 | 0 | There's no similar "themes" for Django like you'd find for Wordpress. Wordpress is a CMS -- a full application -- whereas Django is a framework -- i.e., you could use it to build a Wordpress, but it is not a Wordpress. You could start off with a pure HTML/CSS template and use that to build in functionality, but you won... | 1 | 2 | 0 | Where can I find a list of (preferably curated) DJango based, simple-website, templates (or equivalent, prewritten, boilerplate DJango code and layout)?
Context
I'm considering a project which requires me to deploy a large number of (fairly simple) personal/vanity websites. They are simple enough that, most likely, I s... | Is there a curated repository for DJango based website templates? | 0.099668 | 0 | 0 | 1,017 |
12,591,456 | 2012-09-25T21:40:00.000 | 0 | 0 | 0 | 0 | python,pyqt,kde-plasma | 12,647,323 | 1 | true | 0 | 1 | Unfortunately the API of KActionSelector is a bit cumbersome to use, so I have resorted to implementing the functionality I needed via the use of two QListWidgets and two QPushButtons, marked ">>" and "<<" correspondingly.
Upon the button click I'm removing selected element from current list and add it to the list on t... | 1 | 1 | 0 | I'm trying to create a dialog that uses two GUI elements: KDEUI KActionSelector and QTExtEdit.
I want to have an ability to populate some additional information about the objects in any of the two windows of ActionSelector upon the mouse click.
Under the hood: i have a python dictionary. The keys of the dictionary are ... | KDEUI KAactionSelector widget additional signals (PyQt) | 1.2 | 0 | 0 | 97 |
12,593,541 | 2012-09-26T01:58:00.000 | 0 | 0 | 0 | 0 | javascript,python,templates,web-applications | 12,594,044 | 1 | true | 1 | 0 | There are obviously many ways this can all work together, but it sounds like you have the (a) right idea. Generally the frontend deals with JSON, and the server provides JSON. What's consuming or providing those responses is irrelevant; you shouldn't need to worry that Mongo is your database, or that underscore is hand... | 1 | 1 | 0 | I apologize if this question is not specific enough, but I do need some help understanding this concept. I've been researching many Javascript libraries including JQuery, MooTools, Backbone, Underscore, Handlebars, Mustache, etc - also Node.js and Meteor (I know all those serve different purposes). I have a basic idea ... | How does HTML templating fit in with the backend language and database? | 1.2 | 0 | 0 | 160 |
12,593,759 | 2012-09-26T02:30:00.000 | 0 | 0 | 0 | 0 | python,pandas | 12,594,030 | 1 | true | 0 | 0 | Try DataFrame.duplicated and DataFrame.drop_duplicates | 1 | 1 | 1 | I need to reconcile two separate dataframes. Each row within the two dataframes has a unique id that I am using to match the two dataframes. Without using a loop, how can I reconcile one dataframe against another and vice-versa?
I tried merging the two dataframes on an index (unique id) but the problem I run into w... | Pandas Data Reconcilation | 1.2 | 0 | 0 | 745 |
12,596,557 | 2012-09-26T07:20:00.000 | 1 | 1 | 1 | 0 | python,coding-style | 12,596,686 | 2 | false | 0 | 0 | No, it is not. At the very minimum the framework should provide its own exception class, and probably should have several (depending on the variety of things that could go wrong).
As you said, except Exception will catch way too much and is not good practice. | 1 | 2 | 0 | I'm working with a framework and the source code is raising exceptions using the Exception class (and not a subclass, either framework specific or from the stdlib) in a few places, which is is not a good idea in my opinion.
The main argument against this idiom is that it forces the caller to use except Exception: whic... | arguments for / against `raise Exception(message)` in Python | 0.099668 | 0 | 0 | 89 |
12,597,394 | 2012-09-26T08:15:00.000 | 2 | 1 | 0 | 0 | python,python-3.x,python-2.x | 12,599,590 | 1 | false | 0 | 0 | The best way? Write everything in Python 2.x. It's a simple question: can I do everything in Python 2.x? Yes! Can I do everything in Python 3.x? No. What's your problem then?
But if you really, really have to use two different Python versions ( why not two different languages for example? ) then you will probably have ... | 1 | 3 | 0 | What is the best way to communicate between a Python 3.x and a Python 2.x program?
We're writing a web app whose front end servers will be written in Python 3 (CherryPy + uWSGI) primarily because it is unicode heavy app and Python 3.x has a cleaner support for unicode.
But we need to use systems like Redis and Boto (AW... | communication between Python 3 and Python 2 | 0.379949 | 0 | 1 | 1,491 |
12,603,482 | 2012-09-26T14:00:00.000 | 2 | 0 | 1 | 0 | python | 12,603,545 | 4 | false | 0 | 0 | Create a new file that imports these files and run that file. | 1 | 5 | 0 | I have multiple python files, each with different classes and methods in it. I want to execute all those files with a main function I have separately outside all of them.
For example:
I have three files say one.py, two.py, three.py
I have no main method in any of them, but when I execute them then I want them to pass t... | Execute multiple python files using a single main | 0.099668 | 0 | 0 | 33,676 |
12,603,678 | 2012-09-26T14:11:00.000 | 2 | 0 | 1 | 0 | python,django,concurrency,webserver | 12,604,317 | 3 | false | 0 | 0 | You usually have many workers(i.e. gunicorn), each being dispatched with independent requests. Everything else(concurrency related) is handled by the database so it is abstracted from you.
You don't need IPC, you just need a "single source of truth", which will be the RDBMS, a cache server(redis, memcached), etc. | 2 | 16 | 0 | Any web server might have to handle a lot of requests at the same time. As python interpreter actually has GIL constraint, how concurrency is implemented?
Do they use multiple processes and use IPC for state sharing? | How does a python web server overcomes GIL | 0.132549 | 0 | 1 | 2,640 |
12,603,678 | 2012-09-26T14:11:00.000 | 1 | 0 | 1 | 0 | python,django,concurrency,webserver | 12,603,848 | 3 | false | 0 | 0 | As normal. Web serving is mostly I/O-bound, and the GIL is released during I/O operations. So either threading is used without any special accommodations, or an event loop (such as Twisted) is used. | 2 | 16 | 0 | Any web server might have to handle a lot of requests at the same time. As python interpreter actually has GIL constraint, how concurrency is implemented?
Do they use multiple processes and use IPC for state sharing? | How does a python web server overcomes GIL | 0.066568 | 0 | 1 | 2,640 |
12,605,139 | 2012-09-26T15:23:00.000 | 4 | 0 | 0 | 0 | python,debugging,pyqt | 12,605,679 | 1 | true | 0 | 1 | Using assert is the wrong way. For one thing, if Python is run with -O (or -OO) asserts are turned off; for another, the error message is not very helpful. That library needs to be redesigned to properly use exceptions.
As far as using the library as it stands: what do you want to have happen? Should your app quit?... | 1 | 0 | 0 | My app use QT for the gui layer, and many other lib I made.
One of this other lib is quite complex (it's a type system) and full of asserts to make it as solid as possible.
But when an assert is triggered in this lib, the Qt mainloop simply continue.
I have a qt_debug() that works well (with pyqtRemoveInputHook) for ... | How to globally overload assert so I don't have to change lib code in my PyQT app? | 1.2 | 0 | 0 | 275 |
12,606,027 | 2012-09-26T16:12:00.000 | 1 | 0 | 0 | 0 | python,performance,numpy,f2py | 12,606,715 | 2 | false | 0 | 0 | There shouldn't be any slow-down. Since NumPy 1.6, most ufuncs (ie, the basic 'universal' functions) take an optional argument allowing a user to specify the memory layout of her array: by default, it's K, meaning that the 'the element ordering of the inputs (is matched) as closely as possible`.
So, everything should ... | 1 | 1 | 1 | I'm writing some code in fortran (f2py) in order to gain some speed because of a large amount of calculations that would be quite bothering to do in pure Python.
I was wondering if setting NumPy arrays in Python as order=Fortran will kind of slow down
the main python code with respect to the classical C-style order. | f2py speed with array ordering | 0.099668 | 0 | 0 | 502 |
12,606,333 | 2012-09-26T16:31:00.000 | 0 | 0 | 0 | 1 | python,linux,shell,unix,python-2.7 | 12,606,395 | 3 | false | 0 | 0 | If you must run on python 2, you best also call the interpreter as python2. I think most UNIX releases have symlinks from /usr/bin/python/and /usr/bin/python2 to the appropriate binary. | 1 | 3 | 0 | I'm writing scripts that have to run on a number of different UNIX-like releases.
These are written in python 2.x.
Unfortunately, some newer releases have taken to calling this flavor binary "python2" instead of "python." Thus, "#!/usr/bin/env python" doesn't work to look for the proper installed python interpreter. Ei... | Scripting Hashbang: How to get the python 2 interpreter? | 0 | 0 | 0 | 739 |
12,607,326 | 2012-09-26T17:38:00.000 | 0 | 0 | 0 | 0 | wxpython | 12,607,701 | 1 | true | 0 | 1 | So I found a solution for this.
If I call event.Skip() in my handlers for EVT_LEFT_DOWN and EVT_LEFT_UP it seems to propagate the event such that the default button appearance behavior is restored. | 1 | 0 | 0 | I have a button in wxpython for which I have bound EVT_LEFT_DOWN and EVT_LEFT_UP. I need to know explicitly when it is pressed and released, that's why I'm not using EVT_BUTTON.
The events work fine, the problem is just aesthetic: when I bind EVT_LEFT_DOWN and EVT_LEFT_UP the button no longer exhibits the normal appea... | How to preserve the default button appearance behavior when binding EVT_LEFT_DOWN | 1.2 | 0 | 0 | 76 |
12,610,170 | 2012-09-26T20:49:00.000 | 0 | 0 | 1 | 0 | python | 12,642,397 | 3 | false | 0 | 0 | The way the encoders I've messed with have done this, is to read whatever's there, or a particular chunk size, note the position of the last newline (.rfind('\n')), process the data up to that newline, and then store from the newline to the end of the chunk in a list. When reading the next block, you read from the sam... | 1 | 2 | 0 | I'm reading a text file, line by line, using Python. Each line is of a variable length. The first line could be 10 characters, the next one could be 100; there's no way of telling. Presently, I issue a file.readline() method for each line, process it, and then save it to a database. This method guarantees me one fu... | Python file.read() method | 0 | 0 | 0 | 3,634 |
12,612,229 | 2012-09-27T00:04:00.000 | 2 | 0 | 0 | 0 | python,xml,xml-parsing,large-files | 12,613,046 | 2 | false | 0 | 0 | The best solution will depend in part on what you are trying to do, and how free your system resources are. Converting it to a postgresql or similar database might not be a bad first goal; on the other hand, if you just need to pull data out once, it's probably not needed. When I have to parse large XML files, especi... | 1 | 3 | 0 | I've got an XML file I want to parse with python. What is best way to do this? Taking into memory the entire document would be disastrous, I need to somehow read it a single node at a time.
Existing XML solutions I know of:
element tree
minixml
but I'm afraid they aren't quite going to work because of the problem I... | Parsing a large (~40GB) XML text file in python | 0.197375 | 0 | 1 | 3,511 |
12,612,648 | 2012-09-27T01:06:00.000 | 6 | 0 | 0 | 0 | python,xml,elementtree | 19,738,566 | 2 | false | 0 | 0 | There are different versions of ElementTree.
Some of them accept the xml_declaration argument, some do not.
The one I happen to have does not. It emits the declaration if and only if encoding != 'utf-8'. So, to get the declaration, I call write(filename, encoding='UTF-8'). | 1 | 10 | 0 | I'm writing some XML with element tree.
I'm giving the code an empty template file that starts with the XML declaration:<?xml version= "1.0"?> when ET has finished making its changes and writes the completed XML its stripping out the declarion and starting with the root tag. How can I stop this?
Write call:
ET.Elemen... | Python - Element Tree is removing the XML declaration | 1 | 0 | 1 | 13,577 |
12,613,552 | 2012-09-27T03:14:00.000 | 0 | 0 | 0 | 1 | python,shell,terminal,centos | 12,613,729 | 3 | false | 0 | 0 | per my experience, use sftp the first time will prompt user to accept host public key, such as
The authenticity of host 'xxxx' can't be established.
RSA key fingerprint is xxxx. Are you sure you want to continue connecting
(yes/no)?
once you input yes, the public key will be saved in ~/.ssh/known_hosts, and next t... | 1 | 0 | 0 | Here's what I need to do:
I need to copy files over the network. The files to be copied is in the one machine and I need to send it to the remote machines. It should be automated and it should be made using python. I am quite familiar with os.popen and subprocess.Popen of python. I could use this to copy the files, BUT... | How to automate the sending of files over the network using python? | 0 | 0 | 1 | 1,825 |
12,614,131 | 2012-09-27T04:32:00.000 | 10 | 1 | 1 | 0 | python,code-analysis | 12,663,047 | 6 | false | 0 | 0 | I'm afraid you are mostly on your own.
If you have decent set of tests, look at code coverage and dead code.
If you have a decent profiling setup, use that to get a glimpse of what's used more.
In the end, it seems you are more interested in fan-in/fan-out analysis, I'm not aware of any good tools for Python, primarily... | 1 | 21 | 0 | Looking to improve quality of a fairly large Python project. I am happy with the types of warnings PyLint gives me. However, they are just too numerous and hard to enforce across a large organization. Also I believe that some code is more critical/sensitive than others with respect to where the next bug may come. For e... | Identifying "sensitive" code in your application | 1 | 0 | 0 | 1,381 |
12,616,816 | 2012-09-27T08:10:00.000 | 2 | 0 | 0 | 0 | keyboard,python-2.7,hook | 12,640,731 | 1 | true | 0 | 0 | I found the solutions and finished the script. Here are my findings.
1.I got the global keyboard/mouse inputs from Pyhook. Installing it on Python 2.7 amdx64 might be a bit tricky.
2.To send keystrokes/input to an application I used sendkeys-ctypes which works well with python 2.7 | 1 | 2 | 0 | I am trying to write a script that duplicates a little bit of what Autohotkey does, because it doesn't work very well for me. I need the script to detect keyboard/mouse-click input to a program, and send different strings/sequence of keystrokes based on the original key pressed. For example if I press mouse middle butt... | How do I get python to detect keystrokes from the keyboard and send different strings based on the input key(s) in windows | 1.2 | 0 | 0 | 893 |
12,617,594 | 2012-09-27T08:56:00.000 | 2 | 0 | 1 | 0 | python,regex | 12,617,649 | 3 | false | 0 | 0 | I don't know Python, but with all the regexp engines I know, that would be /[^,]*/. Or if Python has a built-in function to split a string on a regexp, then you could just split on /,/. | 1 | 0 | 0 | Which regular expression pattern will match a substring not containing a specific character in Python? For example, I have the string "abc,5 * de", and I want to match "abc" and "5 * de" as two substrings, but not the ,. | How do I match a string without a specific character in Python? | 0.132549 | 0 | 0 | 226 |
12,619,220 | 2012-09-27T10:25:00.000 | -1 | 0 | 1 | 0 | python,programming-languages | 12,619,301 | 9 | false | 0 | 0 | To answer your second question, Python is an interpreted language so you don't need a compiler. So long as you have Python installed, just run the script.
You can use whatever IDE you prefer to write the code. | 1 | 0 | 0 | I am quite comfortable with C/C++ but I felt that another language would surely help me. So, I decided that Python would be good language to start as I have heard many people talking about Python. I have the following questions :
Where do I start for Python ?
Do I have a compiler like Visual Studio for Python ? I use... | Python - Where do I start? | -0.022219 | 0 | 0 | 333 |
12,620,695 | 2012-09-27T11:48:00.000 | 4 | 0 | 0 | 0 | python,flask,wsgi | 12,620,810 | 3 | true | 1 | 0 | I use uWSGI with the gevent loop. That is the ticket. In fact, this is how I use py-redis which is blocking to not be blocking.
Also, I use uWSGI to write requests after the response while still accepting more requests. | 1 | 6 | 0 | When I test my new Flask application with the built in web server, everything is "single threaded" and blocking. The server can not serve one request without finishing another. It can only process one request at a time.
When deploying a web service, this is obviously not desirable. How do you deploy Flask applications ... | Deploying Flask, parallel requests | 1.2 | 0 | 0 | 2,708 |
12,623,155 | 2012-09-27T13:59:00.000 | 3 | 0 | 1 | 1 | python,macports,homebrew | 12,623,496 | 1 | true | 0 | 0 | I wouldn't use the Macports packages in Homebrew. I'd reinstall them all. A lot of Python packages are compiled , or at least have compiled elements. You're asking for a lot of potential troubles mixing them up. | 1 | 1 | 0 | I recently removed Macports and all its packages and installed Python, Gphoto and some other bits using Homebrew. However python is crashing when looking for libraries as it is looking for them in a MacPorts path. My PATH is correct and the python config show the right path /usr/local/Cellar etc.
Can someone tell me h... | Python libraries after removing MacPorts and installing homebrew | 1.2 | 0 | 0 | 215 |
12,625,951 | 2012-09-27T16:28:00.000 | 3 | 0 | 0 | 1 | python,subprocess,popen,kill,kill-process | 12,680,641 | 2 | true | 0 | 0 | By changing the gid at the beginning of the execution of script2.py, the sub sequent processes belongs to script2 gid. So calling killpg() from script1.py with script2's pid does it well. | 1 | 3 | 0 | I have a few python scripts who are opening themselves in cascade by subprocess.Popen().
(I call script1.py who make a popen of script2.py who makes popen of script3.py, etc)
Is there any way to terminate/kill all subprocesses of script1.py from the script1.py PID.
os.killpg() doesn't work.
Thanks for your help. | python terminate/kill subprocess group | 1.2 | 0 | 0 | 1,294 |
12,627,401 | 2012-09-27T17:59:00.000 | 0 | 1 | 1 | 0 | python,symbols,decompiling | 15,160,831 | 2 | false | 0 | 0 | This post makes me recall my pain once with Telit GM862-GPS modules. My code was exactly at the point that the number of variables, strings, etc added up to the limit. Of course, I didn't know this fact by then. I added one innocent line and my program did not work any more. I drove me really crazy for two days until ... | 1 | 2 | 0 | I have a Telit module which runs [Python 1.5.2+] (http://www.roundsolutions.com/techdocs/python/Easy_Script_Python_r13.pdf)!. There are certain restrictions in the number of variable, module and method names I can use (< 500), the size of each variable (16k) and amount of RAM (~ 1MB). Refer pg 113&114 for details. I wo... | Counting number of symbols in Python script | 0 | 0 | 0 | 403 |
12,628,054 | 2012-09-27T18:42:00.000 | 0 | 0 | 1 | 0 | python,csv | 12,628,748 | 1 | false | 0 | 0 | The problem is, files on the disk are just a sequence of bytes. And not an intelligently stored sequence of lines.
That is, you can alter the n'th line in your file, if and only if, the amount of bytes it contains remains the same after that operation.
If your csv format allows to contain arbitrary amounts of insignif... | 1 | 0 | 0 | I am trying to update a file, but only certain lines. There are a lot of lines and I don't want to rewrite the whole file to update it.
Ex. out of 4k line i need to change 5 item in n-th item
Most answers on this question use two files or rewrite it completely. I am wondering if there is a more effective command for ... | updating a line in file without using 2nd file | 0 | 0 | 0 | 102 |
12,629,091 | 2012-09-27T19:55:00.000 | 3 | 0 | 0 | 1 | python,python-2.7 | 12,629,604 | 1 | false | 0 | 0 | os.listdir is very likely to be compiled c that calls the same base libc system methods that ls does.
In contrast, subprocess.Popen forks a whole new process which is an expensive system operation and requires new file handles to deal with tty operations. | 1 | 0 | 0 | I want to retrieve the list of files in a directory. What would be the fastest way to do so
using subprocess.Popen or using os.listdir. The directory contain 10000 of files. and this has to be done recursively to retrieve the list from the directory and its sub directories. I know we can use os.walk to retrieve the co... | Which one is the faster way to get the list of directories subprocess.Popen or os.listdir | 0.53705 | 0 | 0 | 692 |
12,631,577 | 2012-09-27T23:32:00.000 | 3 | 1 | 0 | 1 | python,embedded | 12,632,227 | 3 | false | 0 | 0 | There may be ways you can cram it down a little more just by configuring, but not much more.
Also, the actual interactive-mode code is pretty trivial, so I doubt you're going to save much there.
I'm sure there are more substantial features you're not using that you could hack out of the interpreter to get the size down... | 1 | 17 | 0 | I spent the last 3 hours trying to find out if it possible to disable or to build Python without the interactive mode or how can I get the size of the python executable smaller for linux.
As you can guess it's for an embedded device and after the cross compilation Python is approximately 1MB big and that is too much ... | Optimizing the size of embedded Python interpreter | 0.197375 | 0 | 0 | 8,769 |
12,632,323 | 2012-09-28T01:17:00.000 | 0 | 0 | 1 | 0 | python,windows,ide,pyglet | 62,126,569 | 5 | false | 0 | 1 | pycharm, I would highly recommend. The free version has all you need, and is very highly organised. I use it all the time. You'll need to copy your pyglet file into every project tho. Still, it's easy to use and functional, and comes with a lot of good tools. | 1 | 0 | 0 | I'm starting to code with pyglet in Windows. I usually rely on Spyder as an IDE, but it seems not to like pyglet. So what would be a convenient way to code / run pyglet in Windows? What is your minimal development setup? Short of obvious minimal setups such as running code on Console2 or using IDLE. | IDE for pyglet? | 0 | 0 | 0 | 1,228 |
12,633,100 | 2012-09-28T03:09:00.000 | 5 | 0 | 0 | 0 | python,wxpython,.app | 12,755,571 | 2 | true | 0 | 1 | Be sure to use Py2app, and make sure the .plist is filled out correctly, IE CFBundleName and CFBundleDisplayName. | 1 | 3 | 0 | I've made a .app with my WxPython script, and it's just about finished. The problem is, the menu bar title reads "Python". How can this be changed? Would I use wx.Menu()/wx.MenuBar(), or is this a problem with the .app file itself? | Changing WxPython app Mac menu bar title? | 1.2 | 0 | 0 | 1,492 |
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