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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13,365,521 | 2012-11-13T17:21:00.000 | 3 | 0 | 0 | 0 | python,api,flask | 13,365,631 | 1 | true | 1 | 0 | The proper RESTful way of deleting a resource is to send a DELETE request, and put the scoping information in the URI (not the body), like /api/records?id=10 or /api/records/10. The method information should be in the HTTP method, not the URI.
I suggest you read "RESTful web services" to learn the best practices on API... | 1 | 1 | 0 | I am just starting to learn how to design/write RESTful APIs. I have a general question:
Assume I have some sort of simple SQL database and I'm writing an API that allows to create a new record, view records, delete a record or update a record.
Assuming I want to delete a record, is it usually better to pass in the ID ... | API Design - JSON or URL Parameters? | 1.2 | 0 | 0 | 384 |
13,366,293 | 2012-11-13T18:12:00.000 | 8 | 0 | 1 | 0 | python,function,arguments,range | 13,366,356 | 4 | true | 0 | 0 | Range takes, 1, 2, or 3 arguments. This could be implemented with def range(*args), and explicit code to raise an exception when it gets 0 or more than 3 arguments.
It couldn't be implemented with default arguments because you can't have a non-default after a default, e.g. def range(start=0, stop, step=1). This is esse... | 1 | 18 | 0 | How can the range function take either: a single argument, range(stop), or range(start, stop), or range(start, stop, step). Does it use a variadic argument like *arg to gather the arguments, and then use a series of if statements to assign the correct values depending on the number of arguments supplied? In essence, d... | How can the built-in range function take a single argument or three? | 1.2 | 0 | 0 | 5,994 |
13,369,795 | 2012-11-13T22:13:00.000 | 1 | 0 | 0 | 0 | python,macos,mongodb,amazon-ec2 | 13,369,827 | 5 | false | 0 | 0 | Databases are, by default, stored in /data/db (some environments override this and use /var/lib/mongodb, however). You can see the total db size by looking at db.stats() (specifically fileSize) in the MongoDB shell. | 2 | 7 | 0 | I'm scraping tweets and inserting them into a mongo database for analysis work in python. I want to check the size of my database so that I won't incur additional charges if I run this on amazon. How can I tell how big my current mongo database is on osx? And will a free tier cover me? | where is mongo db database stored on local hard drive? | 0.039979 | 1 | 0 | 17,118 |
13,369,795 | 2012-11-13T22:13:00.000 | 4 | 0 | 0 | 0 | python,macos,mongodb,amazon-ec2 | 13,369,857 | 5 | true | 0 | 0 | I believe on OSX the default location would be /data/db. But you can check your config file for the dbpath value to verify. | 2 | 7 | 0 | I'm scraping tweets and inserting them into a mongo database for analysis work in python. I want to check the size of my database so that I won't incur additional charges if I run this on amazon. How can I tell how big my current mongo database is on osx? And will a free tier cover me? | where is mongo db database stored on local hard drive? | 1.2 | 1 | 0 | 17,118 |
13,370,877 | 2012-11-13T23:48:00.000 | 1 | 0 | 1 | 1 | python,batch-file,python-3.x | 13,370,997 | 1 | false | 0 | 0 | Can't you just use os.system? | 1 | 1 | 0 | I'm trying to get the output from a batch file LIVE as it runs. I would prefer the console of the batch file to also show as it runs. I have tried using os.popen and subprocess.Popen but the problem is that it does not run the program LIVE in the background and constantly show what is being printed to the console.
Exac... | Live output from a batch file with Python | 0.197375 | 0 | 0 | 148 |
13,371,444 | 2012-11-14T00:48:00.000 | 7 | 0 | 1 | 1 | python,file-io | 13,371,542 | 3 | true | 0 | 0 | You can use os.access for checking your access permission. If access permissions are good, then it has to be the second case. | 1 | 14 | 0 | My goal is to know if a file is locked by another process or not, even if I don't have access to that file!
So to be more clear, let's say I'm opening the file using python's built-in open() with 'wb' switch (for writing). open() will throw IOError with errno 13 (EACCES) if:
the user does not have permission to the f... | Python : Check file is locked | 1.2 | 0 | 0 | 23,396 |
13,373,014 | 2012-11-14T04:24:00.000 | 1 | 0 | 1 | 0 | python | 13,373,099 | 1 | true | 0 | 0 | yup, its not at all secure, but eval is the way to go:
In [1]: a= 10
In [2]: b= 20
In [3]: eval('a + 10*b')
Out[3]: 210 | 1 | 0 | 0 | Is there any way to do this?
Basically I have a file that I want a user to be able to edit via a GUI I built(all of which I can do easily). Part of this is a calculation in a function. That or being able to edit a .py file from another file would be fine as well, but it is hard to find anything on that because every se... | Importing a function from a .txt file | 1.2 | 0 | 0 | 119 |
13,373,291 | 2012-11-14T04:59:00.000 | -1 | 0 | 0 | 0 | python,ctypes,complex-numbers | 13,373,641 | 5 | false | 0 | 1 | If c_complex is a C struct and you have the definition of in documentation or a header file you could utilize ctypes to compose a compatible type. It is also possible, although less likely, that c_complex is a typdef for a type that ctypes already supports.
More information would be needed to provide a better answer..... | 1 | 4 | 0 | This might be a bit foolish but I'm trying to use ctypes to call a function that receives a complex vector as a paramter. But in ctypes there isn't a class c_complex.
Does anybody know how to solve this?
edit: I'm refering to python's ctypes, in case there are others.... | Complex number in ctypes | -0.039979 | 0 | 0 | 2,911 |
13,374,423 | 2012-11-14T07:09:00.000 | 0 | 0 | 0 | 0 | python,json,heroku,urllib2 | 13,393,776 | 1 | false | 1 | 0 | nevermind I fixed it. All i did was I referenced the local json file on my computer rather than the url. | 1 | 0 | 0 | When i run this Heroku app in debug mode, it works perfectly, but when I push the changes and visit the page, the page refuses to load and i get a 503 error. I can't figure out what is wrong (seeing as how debug says everything is fine :( ) [using python 2.7]
fixed. see comment | 503 error with urllib and flask | 0 | 0 | 0 | 1,095 |
13,376,448 | 2012-11-14T09:52:00.000 | 1 | 0 | 1 | 0 | python,multithreading,qt,thread-safety,qthread | 13,381,623 | 1 | true | 0 | 1 | Both answers depend on what your code is doing and what you expect from the thread.
If your logic which uses the thread needs to wait synchronously for the moment QThread finishes, then yes, you need to call wait(). However such requirement is a sign of sloppy threading model, except very specific situations like appli... | 1 | 1 | 0 | I'm writing a multi-threaded application that utilizes QThreads. I know that, in order to start a thread, I need to override the run() method and call that method using the thread.start() somewhere (in my case in my GUI thread).
I was wondering, however, is it required to call the .wait() method anywhere and also am I ... | Do I need to manually call .quit() method when QThread() stops running (Python)? | 1.2 | 0 | 0 | 438 |
13,377,197 | 2012-11-14T10:38:00.000 | 1 | 1 | 0 | 0 | python,wave | 13,378,468 | 4 | false | 0 | 0 | If your wave file consists of only one note, you can get the fundamental frequency (not the harmonics) simply by detecting the periodicity of the wave. Do this by looking for 0-crossings. | 1 | 2 | 0 | How to analyse frequency of wave file in a simple way? Without extra modules. | How to analyse frequency of wave file | 0.049958 | 0 | 0 | 2,086 |
13,382,262 | 2012-11-14T15:51:00.000 | 0 | 0 | 0 | 0 | python,node.js,web-applications | 13,384,050 | 1 | true | 1 | 0 | It would replace Python (flask/werkzeug) in both your view server and your API server. | 1 | 0 | 0 | I am interested in learning more about node.js and utilizing it in a new project. The problem I am having is envisioning where I could enhance my web stack with it and what role it would play. All I have really done with it is followed a tutorial or two where you make something like a todo app in all JS. That is all fi... | Where does node.js fit in a stack or enhance it | 1.2 | 1 | 0 | 228 |
13,383,684 | 2012-11-14T17:09:00.000 | 0 | 0 | 0 | 0 | python,matlab,libsvm | 13,445,709 | 1 | false | 0 | 0 | Normally you would just call a method in libsvm to save your model to a file. You then can just use it in Python using their svm.py. So yes, you can - it's all saved in libsvm format. | 1 | 0 | 1 | Is it possible to use in Python the svm_model, generated in matlab? (I use libsvm) | Is it possible to use in Python the svm_model, generated in matlab? | 0 | 0 | 0 | 77 |
13,385,085 | 2012-11-14T18:34:00.000 | 2 | 0 | 1 | 0 | python,algorithm | 13,386,318 | 3 | true | 0 | 0 | I think the linear probe suggested by @isbadawi is the best way to find the beginning of the subsequence. This is because the subsequence could be very short and could be anywhere within the larger sequence.
However, once the beginning of the subsequence is found, we can use a binary search to find the end of it. Tha... | 1 | 3 | 0 | I need to find all the days of the month where a certain activity occurs. The days when the activity occurs will be sequential. The sequence of days can range from one to the entire month, and the sequence will occur exactly one time per month.
To test whether or not the activity occurs on any given day is not an expe... | In python, how can I efficiently find a consecutive sequence that is a subset of a larger consecutive sequence? | 1.2 | 0 | 0 | 418 |
13,385,981 | 2012-11-14T19:33:00.000 | 2 | 1 | 0 | 0 | python,email,response,imaplib | 13,387,035 | 2 | false | 0 | 0 | You are connecting to the wrong port. 587 is authenticated SMTP, not IMAP; the IMAP designated port number is 143 (or 993 for IMAPS). | 2 | 2 | 0 | I have the following line of code using imaplib
M = imaplib.IMAP4('smtp.gmail.com', 587)
I get the following error from imaplib:
abort: unexpected response: '220 mx.google.com ESMTP o13sm12303588vde.21'
However from reading elsewhere, it seems that that response is the correct response demonstrating that the connection... | python imaplib unexpected response 220 | 0.197375 | 0 | 1 | 2,034 |
13,385,981 | 2012-11-14T19:33:00.000 | 2 | 1 | 0 | 0 | python,email,response,imaplib | 13,399,991 | 2 | true | 0 | 0 | I realized I needed to do IMAP4_SSL() - has to be SSL for IMAP and for using IMAP I need the IMAP server for gmail which is imap.googlemail.com. I ultimately got it work without specifying a port. So, final code is:
M = imaplib.IMAP4_SSL('imap.googlemail.com') | 2 | 2 | 0 | I have the following line of code using imaplib
M = imaplib.IMAP4('smtp.gmail.com', 587)
I get the following error from imaplib:
abort: unexpected response: '220 mx.google.com ESMTP o13sm12303588vde.21'
However from reading elsewhere, it seems that that response is the correct response demonstrating that the connection... | python imaplib unexpected response 220 | 1.2 | 0 | 1 | 2,034 |
13,388,177 | 2012-11-14T22:04:00.000 | 0 | 0 | 0 | 0 | python,sockets,networking | 13,389,747 | 4 | false | 0 | 0 | I want it so it's always listening. Whenever anyone tries to connect, it instantly accepts them and adds them to a list of connections.
So you just have:
An accept() loop that does nothing but accept() new connections and start a new thread to handle each one.
A thread per connection that reads with a long timeout, w... | 2 | 0 | 0 | I'm trying to make a chat server thing. Basically, I want more than one client to be able to connect at the same time.
I want it so it's always listening. Whenever anyone tries to connect, it instantly accepts them and adds them to a list of connections.
I could have a listen(1) then a timeout, and keep appending them ... | Having an infinite amount of sockets connected? | 0 | 0 | 1 | 930 |
13,388,177 | 2012-11-14T22:04:00.000 | 2 | 0 | 0 | 0 | python,sockets,networking | 13,388,385 | 4 | false | 0 | 0 | Consider whether you actually need to maintain separate sockets for every connection. Would something like connectionless UDP be appropriate? That way you could support an arbitrary number of users while only using one OS socket.
Of course, with this approach you'd need to maintain connection semantics internally (if... | 2 | 0 | 0 | I'm trying to make a chat server thing. Basically, I want more than one client to be able to connect at the same time.
I want it so it's always listening. Whenever anyone tries to connect, it instantly accepts them and adds them to a list of connections.
I could have a listen(1) then a timeout, and keep appending them ... | Having an infinite amount of sockets connected? | 0.099668 | 0 | 1 | 930 |
13,389,724 | 2012-11-15T00:22:00.000 | 0 | 0 | 1 | 1 | python,compilation,exe,cx-freeze | 13,967,222 | 3 | false | 0 | 0 | Have you tried innosetup? It can create installer files from the output of cxfreeze. There might be an option somewhere to bundle everything into one file. | 1 | 3 | 0 | I'm using cx_Freeze to compile Python programs into executables and it works just fine, but the problem is that it doesn't compile the program into one EXE, it converts them into a .exe file AND a whole bunch of .dll files including python32.dll that are necessary for the program to run.
Does anyone know how I can pack... | Convert an EXE and its dependencies into one stand-alone EXE | 0 | 0 | 0 | 2,963 |
13,390,082 | 2012-11-15T01:05:00.000 | 1 | 0 | 0 | 0 | python,linux,sockets,connect,epoll | 13,390,556 | 2 | false | 0 | 0 | You can't know it 'failed because the server can't accept more connections', because there is no specific protocol for that condition. You can only know it failed for the usual reasons: ECONNREFUSED, connection timeout, EUNREACH, etc. | 2 | 0 | 0 | I am writing a simple test script(python) to test a web server's performance(all this server does is HTTP redirect). Socket is set to non-blocking, and registered to an epoll instance.
How can I know the connect() is failed because the server can't accept more connections? I am currently using EPOLLERR as the indicato... | How is connect() failure notified in epoll? | 0.099668 | 0 | 1 | 988 |
13,390,082 | 2012-11-15T01:05:00.000 | 1 | 0 | 0 | 0 | python,linux,sockets,connect,epoll | 13,390,310 | 2 | false | 0 | 0 | That catches the case of Connection Refused and other socket errors. Since I assume you are registering for read/write availability (success) upon the pending socket as well, you should also manually time-out those connections which have failed to notify you of read, write, or error availability on the associated file... | 2 | 0 | 0 | I am writing a simple test script(python) to test a web server's performance(all this server does is HTTP redirect). Socket is set to non-blocking, and registered to an epoll instance.
How can I know the connect() is failed because the server can't accept more connections? I am currently using EPOLLERR as the indicato... | How is connect() failure notified in epoll? | 0.099668 | 0 | 1 | 988 |
13,390,716 | 2012-11-15T02:27:00.000 | 3 | 0 | 1 | 0 | python,windows-7,installation | 13,390,837 | 3 | true | 0 | 0 | The installer typically has an option for "Set file associations" that handles that, and I think it's on by default, which means that the most-recently-installed one will handle double-clicking .py files. So install 64-bit Python 3.3 last and it should work. I just did this a few days ago with 32- and 64-bit version ... | 1 | 6 | 0 | What would be the best way/order to install both 32 and 64 bit versions of Python 2.7 and Python 3.3 if I want 64 bit Python 3.3 to be the default when I open .py files?
I already have the 32 bit version of each installed, with defaults set to Python 3.3.
If it is fine to just rename the directory of my currently inst... | Installing multiple main and bit versions of Python | 1.2 | 0 | 0 | 888 |
13,391,901 | 2012-11-15T05:15:00.000 | 0 | 0 | 0 | 1 | python,unix,vi | 13,391,941 | 1 | false | 0 | 0 | Have your script myscript.py take an optional argument e.g. other_term. Spawn xterm -e myscript.py other_term. When the second instance of myscript.py starts, check for the optional argument other_term; if present, perform the second set of commands. Use environment variables or files or command line arguments or pi... | 1 | 2 | 0 | I want to run a script that contains some commands to execute for eg: pwd, xterm home, date, time Here i want to run the script which executes pwd in first terminal, and creates a xterm home then in xterm home terminal i want to run date and time command then i want to run once again pwd in main terminal.
"How to switc... | how to switch the action of execution of script between the terminals in the python script? | 0 | 0 | 0 | 101 |
13,392,095 | 2012-11-15T05:37:00.000 | 0 | 0 | 0 | 0 | python,django,caching | 13,393,855 | 2 | false | 1 | 0 | After changing your code, make sure you are restarting your server e.g. apache or fastcgi. | 1 | 1 | 0 | I am really new to Django, and I'm trying have my site display a server status as text. This text, however, is dynamic. I do not understand why, if I go in my model and change the server status function to return 'cats', I don't see 'cats' appear in my browser for like 5 minutes.
From what I have learned so far, I susp... | How to stop Django from caching dynamic templates? | 0 | 0 | 0 | 1,291 |
13,394,969 | 2012-11-15T09:51:00.000 | 0 | 0 | 0 | 0 | python,machine-learning,cherrypy | 13,399,425 | 2 | false | 1 | 0 | NLTK based system tends to be slow at response per request, but good throughput can be achieved given enough RAM. | 1 | 4 | 1 | Let me explain what I'm trying to achieve. In the past while working on Java platform, I used to write Java codes(say, to push or pull data from MySQL database etc.) then create a war file which essentially bundles all the class files, supporting files etc and put it under a servlet container like Tomcat and this becom... | How to expose an NLTK based ML(machine learning) Python Script as a Web Service? | 0 | 0 | 0 | 1,090 |
13,395,116 | 2012-11-15T10:01:00.000 | 5 | 1 | 1 | 0 | python,python-import | 13,395,225 | 4 | false | 0 | 0 | You can just import it again other places that you need it -- it will be cached after the first time so this is relatively inexpensive.
Alternatively you could modify the current global namespaces with something like globals()['name'] = local_imported_module_name.
EDIT: For the record, although using the globals() func... | 1 | 9 | 0 | I need to have an import in __init__() method (because i need to run that import only when i instance the class).
But i cannot see that import outside __init__(), is the scope limited to__init__? how to do? | Python import in __init__() | 0.244919 | 0 | 0 | 7,587 |
13,398,191 | 2012-11-15T13:12:00.000 | 0 | 0 | 0 | 1 | python | 13,399,024 | 2 | false | 0 | 0 | You can launch ps command, parse its output and get info about running processes. I haven't found better way still. If you're on unix of cause. | 1 | 0 | 0 | Is there any way to notify when the system process started, terminated or completed.
I am searching kind of listener that listen events of the system, such as process start, stop etc. | System process listener in python | 0 | 0 | 0 | 524 |
13,403,741 | 2012-11-15T18:22:00.000 | 1 | 1 | 0 | 0 | python | 13,404,694 | 1 | true | 1 | 0 | You should use an asynchronous data approach to transfer data from a PHP script - or directly from the Python script, to an already rendered HTML page on the user side.
Check a javascript framework for the way that is easier for you to do that (for example, jquery). Then return an html page minus results to the user, ... | 1 | 0 | 0 | I have a Python web application in which one function that can take up to 30 seconds to complete.
I have been kicking off the process with a cURL request (inc. parameters) from PHP but I don't want the user staring at a blank screen the whole time the Python function is working.
Is there a way to have it process th... | Python long running process | 1.2 | 0 | 0 | 338 |
13,404,538 | 2012-11-15T19:16:00.000 | 1 | 0 | 0 | 0 | python,sockets,tcp,epoll | 13,404,886 | 1 | true | 0 | 0 | ECONNREFUSED signals that the connection was refused by the server, while ETIMEOUT signals that the attempt to connect has timed out, i.e. that no indication (positive or negative) about the connection attempt was received from the peer.
socket.recv() returning an empty string without error is simply the EOF condition,... | 1 | 1 | 0 | I am doing some stress test to a simple HTTP redirect server in Python scripts. The script is set up with epoll (edge trigger mode) with non-blocking sockets. But I observed something that I don't quite understand,
1) epoll can get both ECONNREFUSED and ETIMEOUT errno while the connect() is in process. Don't they both ... | TCP non-blocking socket.connect() and socket.recv() Error questions. (Python or C) | 1.2 | 0 | 1 | 1,087 |
13,405,277 | 2012-11-15T20:05:00.000 | 1 | 0 | 0 | 1 | python,usb,barcode,stdin | 13,405,792 | 1 | true | 0 | 0 | The normal way of intercepting standard input in Unix is pipes and multiple processes. If you have a multi-process application, then one process can receive the "raw" standard input, capture barcode input, and pass on the rest to its standard output. That output would then be the standard input of your UI process whi... | 1 | 1 | 0 | I'm trying to set up a barcode scanner object that will capture anything input from the scanner itself. The barcode scanner is recognized as a standard input (stdin) and therefore whenever I scan a barcode, I get standard input text. There will also be a keyboard attached to the system, which is another standard input.... | Python redirect stdin | 1.2 | 0 | 0 | 1,168 |
13,405,501 | 2012-11-15T20:19:00.000 | 1 | 0 | 1 | 0 | python,berkeley-db,leveldb,kyotocabinet | 13,406,125 | 2 | false | 0 | 0 | You said you have lots of disk, huh? One option would be to store the strings as filenames in nested subdirectories. You could either use the strings directly:
Store "drew sears" in d/r/e/w/ sears
or by taking a hash of the string and following a similar process:
MD5('drew sears') = 'f010fe6e20d12ed895c10b93b2f81c6e... | 1 | 6 | 0 | I have a set of 100+ million strings, each up to 63 characters long. I have lots of disk space and very little memory (512 MB). I need to query for existence alone, and store no additional metadata.
My de facto solution is a BDB btree. Are there any preferable alternatives? I'm aware of leveldb and Kyoto Cabinet, but n... | Efficient way to check existence in a large set of strings | 0.099668 | 0 | 0 | 966 |
13,405,956 | 2012-11-15T20:49:00.000 | 0 | 0 | 0 | 0 | python,numpy,scipy,python-imaging-library,color-space | 60,718,937 | 5 | false | 0 | 0 | At the moment I haven't found a good package to do that. You have to bear in mind that RGB is a device-dependent colour space so you can't convert accurately to XYZ or CIE Lab if you don't have a profile.
So be aware that many solutions where you see converting from RGB to CIE Lab without specifying the colour space o... | 1 | 49 | 1 | What is the preferred way of doing the conversion using PIL/Numpy/SciPy today? | Convert an image RGB->Lab with python | 0 | 0 | 0 | 55,003 |
13,407,253 | 2012-11-15T22:19:00.000 | 0 | 0 | 1 | 0 | python,list,dictionary,tuples | 13,407,315 | 3 | false | 0 | 0 | ([1,2]:0, [2,3]:0) is not a dictionary. I think you meant to use: {(1,2):0, (2,3):1} | 1 | 0 | 0 | I need to make a dictionary where you can reference [[1,2],[3,4]] --> ([1,2]:0, [2,3]:0)
I've tried different ways but I can't use a list in a dictionary. So i tried using tuples, but its still the same. Any help is appreciated! | How do I make a list a key value in a dictionary? | 0 | 0 | 0 | 86 |
13,407,554 | 2012-11-15T22:44:00.000 | 5 | 0 | 0 | 0 | python,django,amazon-s3,amazon-web-services,amazon-ec2 | 13,407,676 | 1 | true | 1 | 0 | You just need to find out where your code is located on the server. SSH to one of the instances and then you can use the python interactive shell to run your django code for debugging, use the manage.py commands for database debugging, tests etc.
Once you have connected to the instance, it's just an OS. | 1 | 3 | 0 | I am new to web development. This is probably a dumb question but I could not quite find exact answer or tutorial that could help me. The company I am working at has its site(which is built in python django )hosted on amazon EC2. I want to know where I can start about debugging this production site and check logs and d... | How can I debug python web site on amazon EC2? | 1.2 | 0 | 0 | 743 |
13,408,685 | 2012-11-16T00:32:00.000 | 0 | 0 | 0 | 0 | python,django,macos | 13,447,213 | 1 | false | 1 | 0 | Rule of thumb is: if app's documentary doesn't explain how to install (use, etc.) app, then its better to forget about using that app.
How can you rely on 5-month-not-updated-not-tested-not-well-documented app? There should be better solution. | 1 | 0 | 0 | sorry I'm a total noob but I can't find anywhere that actually explains this. I want to make a web blog, and I figured instead of rolling my own I would use a pre-made one, and I picked the blog from the basic apps project (https://github.com/nathanborror/django-basic-apps). I installed everything fine, added the apps ... | How do I use a pre-made app with my project? | 0 | 0 | 0 | 109 |
13,409,324 | 2012-11-16T01:59:00.000 | 2 | 0 | 1 | 0 | python,python-3.x | 13,409,456 | 3 | false | 0 | 0 | f=open(file,'a') first para is the path of file,second is the pattern,'a' is append,'w' is write, 'r' is read ,and so on
im my opinion,you can use f.write(list+'\n') to write a line in a loop ,otherwise you can use f.writelines(list),it also functions. | 1 | 1 | 0 | In Python:
Let's say I have a loop, during each cycle of which I produce a list with the following format:
['n1','n2','n3']
After each cycle I would like to write to append the produced entry to a file (which contains all the outputs from the previous cycles). How can I do that?
Also, is there a way to make a list whos... | How can I append to the new line of a file while using write()? | 0.132549 | 0 | 0 | 2,858 |
13,415,660 | 2012-11-16T11:26:00.000 | 2 | 1 | 0 | 0 | python,compiler-construction,code-generation,llvm,converter | 13,416,469 | 1 | true | 1 | 0 | LLVM up to 3.0 provided a C backend (see lib/Target/CBackend) which should be a good starting point for implementing a simple Python code generator. | 1 | 6 | 0 | Is there any tool to convert the LLVM IR code to Python code?
I know it is possible to convert it to Javascript (https://github.com/kripken/emscripten/wiki), to Java (http://da.vidr.cc/projects/lljvm/) and I would love to convert it to Python also.
Additionaly if such tool does not exist, could you provide any informat... | LLVM IR to Python Compiler | 1.2 | 0 | 0 | 1,835 |
13,417,553 | 2012-11-16T13:26:00.000 | 1 | 0 | 1 | 0 | python,user-interface,wxpython,auto-update | 13,418,479 | 2 | false | 0 | 1 | You would want to use threads. wxPython provides several thread-safe methods such as wx.CallAfter, wx.CallLater and wx.PostEvent. You can combine those with pubsub to send messages too! In your case, I think passing a wx method to wx.CallAfter with whatever text you wish to display would work just fine. | 1 | 1 | 0 | I have got a python function that takes a few parameters and executes a few tasks (let's call it theFunc). While theFunc runs, internal variable resultingMessage is getting more and more lines, and I show it on GUI at the end of the execution. Ideally, I would like resultingMessage to be shown and updated on GUI as the... | Updating GUI while execution a python function while keeping this function GUI-independent | 0.099668 | 0 | 0 | 487 |
13,419,659 | 2012-11-16T15:33:00.000 | 1 | 0 | 1 | 0 | python,pycharm | 61,092,990 | 2 | false | 0 | 0 | To have the Watches pane displayed separately and view the configured watches in it, release the Show watches in the Variables tab toggle button (eyeglasses button) on the toolbar of the Variables pane. By default, the button is pressed. | 1 | 7 | 0 | I'm somewhat new to Pycharm, and I suppose this should be an easy question, but I'm not finding the answer anywhere...
The Pycharm documentation has instructions for adding/editing items in the Watches pane, but the documentation assumes the Watches pane is already open, so it skips the step on how to open/access it. D... | Pycharm - How do I access the "Watches" pane? | 0.099668 | 0 | 0 | 3,492 |
13,419,734 | 2012-11-16T15:38:00.000 | 0 | 0 | 0 | 0 | python,web-scraping,scrapy,scrapyd | 15,516,604 | 2 | false | 1 | 0 | What about use the same sqlite database? The dbs_dir is set in scrapyd.script._get_config(). | 1 | 2 | 0 | I have been searching for documentation on the Scrapyd Service but it is very slim. I was wondering if anyone has any idea how to set up multiple Scrapyd servers that point to the same schedule queue? | How to run multiple scrapyd servers? | 0 | 0 | 0 | 1,381 |
13,419,822 | 2012-11-16T15:43:00.000 | 41 | 0 | 0 | 0 | python,pandas | 13,420,016 | 1 | true | 0 | 0 | All functions in Python are "pass by reference", there is no "pass by value". If you want to make an explicit copy of a pandas object, try new_frame = frame.copy(). | 1 | 19 | 1 | I noticed a bug in my program and the reason it is happening is because it seems that pandas is copying by reference a pandas dataframe instead of by value. I know immutable objects will always be passed by reference but pandas dataframe is not immutable so I do not see why it is passing by reference. Can anyone provid... | pandas dataframe, copy by value | 1.2 | 0 | 0 | 17,836 |
13,420,405 | 2012-11-16T16:20:00.000 | 3 | 0 | 0 | 0 | python,file,networking | 13,420,569 | 1 | true | 0 | 0 | The fileno() function needs to return a kernel file descriptor, so that it can be passed to the select system call (or poll/epoll/whatever). The multiplexing done by select-like operations is fundamentally an OS operation which must work on OS objects.
If you want to implement this for an object not based on an actual ... | 1 | 1 | 0 | I'm trying to write a class with the same interface of Python 2 Standard Library's socket.socket.
I've problems trying to reproduce the behavior the object should have when a program tries to call select.select() on it.
The documentation in the entry for select.select says:
You may also define a wrapper class yourself... | Imitating the behavior of fileno() and select | 1.2 | 0 | 1 | 486 |
13,420,413 | 2012-11-16T16:20:00.000 | 4 | 0 | 1 | 0 | python,pip | 13,420,616 | 4 | true | 0 | 0 | For me, on an OS X 10.5, the default installation of Python is soft-linked to /Library/Frameworks/Python.framework/Versions/Current/, and ipython is at /Library/Frameworks/Python.framework/Versions/Current/bin/ipython. Make sure the bin directory it's sitting in is in your shell PATH. Type:
$ export PATH=/Library/Fra... | 4 | 4 | 0 | I'm using Mac OS X 10.6.8 and python 2.7.3. I'm trying to use pip to install ipython, and running sudo pip install ipython installs successfully, but when I try to run ipython I get "command not found". I cannot find where pip installs packages, or why it's not linking correctly. I'm very new with this, please help! | Cannot find packages installed with pip | 1.2 | 0 | 0 | 7,228 |
13,420,413 | 2012-11-16T16:20:00.000 | 5 | 0 | 1 | 0 | python,pip | 28,154,764 | 4 | false | 0 | 0 | I had this problem and fixed it by restarting my terminal. | 4 | 4 | 0 | I'm using Mac OS X 10.6.8 and python 2.7.3. I'm trying to use pip to install ipython, and running sudo pip install ipython installs successfully, but when I try to run ipython I get "command not found". I cannot find where pip installs packages, or why it's not linking correctly. I'm very new with this, please help! | Cannot find packages installed with pip | 0.244919 | 0 | 0 | 7,228 |
13,420,413 | 2012-11-16T16:20:00.000 | 4 | 0 | 1 | 0 | python,pip | 30,338,172 | 4 | false | 0 | 0 | I fixed this problem by using sudo. sudo will install the ipython in system folder.
pip uninstall ipython
and than
sudo pip install ipython | 4 | 4 | 0 | I'm using Mac OS X 10.6.8 and python 2.7.3. I'm trying to use pip to install ipython, and running sudo pip install ipython installs successfully, but when I try to run ipython I get "command not found". I cannot find where pip installs packages, or why it's not linking correctly. I'm very new with this, please help! | Cannot find packages installed with pip | 0.197375 | 0 | 0 | 7,228 |
13,420,413 | 2012-11-16T16:20:00.000 | 0 | 0 | 1 | 0 | python,pip | 43,588,624 | 4 | false | 0 | 0 | Similar to acjay, for me worked with:
/Library/Frameworks/Python.framework/Versions/Current/lib/python2.7/site-packages/
adding to path (10.12 Sierra). | 4 | 4 | 0 | I'm using Mac OS X 10.6.8 and python 2.7.3. I'm trying to use pip to install ipython, and running sudo pip install ipython installs successfully, but when I try to run ipython I get "command not found". I cannot find where pip installs packages, or why it's not linking correctly. I'm very new with this, please help! | Cannot find packages installed with pip | 0 | 0 | 0 | 7,228 |
13,424,753 | 2012-11-16T21:35:00.000 | 1 | 0 | 0 | 0 | python | 13,424,798 | 4 | false | 0 | 0 | Open a pool of threads, open a Url for each, wait for a 200 or a 404. Rinse and repeat. | 1 | 1 | 0 | Suppose I was giving this list of urls:
website.com/thispage
website.com/thatpage
website.com/thispageagain
website.com/thatpageagain
website.com/morepages
... could possibly be over say 1k urls.
What is the best/easiest way to kinda loop through this list and check whether or not the page is up? | Given a big list of urls, what is a way to check which are active/inactive? | 0.049958 | 0 | 1 | 2,657 |
13,424,875 | 2012-11-16T21:45:00.000 | 0 | 0 | 0 | 0 | python,django | 13,425,827 | 4 | false | 1 | 0 | You can use python manage.py shell and import the views you want and then use dir() for example, dir(TemplateView) or you can read the source code or you use help() method to give quick overview. For example, help(TemplateView) | 2 | 0 | 0 | I read the documentation and its kind of vague when it comes to outlining the methods/parameters/properties available to Class based views, is there a list of some website that provides such as list anywhere? | List of methods and parameters available to Django's class based views? | 0 | 0 | 0 | 90 |
13,424,875 | 2012-11-16T21:45:00.000 | 1 | 0 | 0 | 0 | python,django | 13,424,901 | 4 | false | 1 | 0 | You should use your python manage.py shell and simply import your views and
use dir(my_view) and help(my_view) | 2 | 0 | 0 | I read the documentation and its kind of vague when it comes to outlining the methods/parameters/properties available to Class based views, is there a list of some website that provides such as list anywhere? | List of methods and parameters available to Django's class based views? | 0.049958 | 0 | 0 | 90 |
13,426,374 | 2012-11-17T00:25:00.000 | 0 | 0 | 0 | 1 | python,c,zeromq,pyzmq | 13,487,196 | 1 | false | 0 | 0 | It's not a race condition in zmq, and not a problem with zmq_connect. That extra 0x01 byte is presumably at fault. If you are passing that to zmq_connect, what result do you expect except EINVAL?
So where does that extra byte come from? Do you get it on all messages sent between two peers? What are you doing different... | 1 | 0 | 0 | I got a C-ZMQ client that receiving two random ports (from pyzmq server) and then connecting to them.
Usually, everything is working, but sometimes the 2nd connect fail with errno set to EINVAL. (Even when I switched between the connect calls the 2nd still failed).
The port number is fine and it looks like some kind of... | ZeroMQ 2nd connection fail with einval | 0 | 0 | 0 | 411 |
13,427,477 | 2012-11-17T03:45:00.000 | 1 | 0 | 0 | 1 | python,google-app-engine,http-post,http-get | 13,427,499 | 1 | true | 1 | 0 | Links inherently generate GET requests. If you want to generate a POST request, you'd need to either:
Use a form with method="POST" and submit it, or
Use AJAX to load the new page. | 1 | 1 | 0 | I'm trying to pass a variable from one page to another using google app engine, I know how to pass it using GET put putting it in the URL. But I would like to keep the URL clean, and I might need to pass a larger amount of data, so how can pass info using post.
To illustrate, I have a page with a series of links, each... | Pass data in google app engine using POST | 1.2 | 0 | 0 | 297 |
13,428,313 | 2012-11-17T06:31:00.000 | 3 | 0 | 1 | 0 | python | 13,428,441 | 2 | false | 0 | 0 | Just examine closed attribute of file object. | 1 | 2 | 0 | How do I add a check to avoid flushing a file f with f.flush() when some function has already done f.close()?
I can't seem to figure out how to do so :/ | Python Flushing and Already Closed File | 0.291313 | 0 | 0 | 421 |
13,432,635 | 2012-11-17T16:54:00.000 | 1 | 0 | 1 | 0 | python,list,dictionary | 13,432,674 | 3 | false | 0 | 0 | On Linux:
A nice method using grep to filter out any words containing apostrophes in the words file and save to mywords.txt in your home directory.
grep "^[^']*$" /usr/share/dict/words > ~/mywords.txt
No need to install, download or write any code!
On OS X:
Even easier as /usr/share/dict/words contains no words with ... | 1 | 0 | 0 | I am looking for a dictionary file containing only words without apostrophes. I cant seem to find one! Does anyone know how where I can find one, if not how could I eliminate those words from the file using Python? | List of Dictionary words without apostrophes | 0.066568 | 0 | 0 | 1,178 |
13,432,800 | 2012-11-17T17:14:00.000 | 3 | 1 | 0 | 0 | c++,python,performance,opencv | 66,955,473 | 5 | false | 0 | 0 | Why choose?
If you know both Python and C++, use Python for research using Jupyter Notebooks and then use C++ for implementation.
The Python stack of Jupyter, OpenCV (cv2) and Numpy provide for fast prototyping.
Porting the code to C++ is usually quite straight-forward. | 2 | 92 | 1 | I aim to start opencv little by little but first I need to decide which API of OpenCV is more useful. I predict that Python implementation is shorter but running time will be more dense and slow compared to the native C++ implementations. Is there any know can comment about performance and coding differences between th... | Does performance differ between Python or C++ coding of OpenCV? | 0.119427 | 0 | 0 | 76,398 |
13,432,800 | 2012-11-17T17:14:00.000 | 6 | 1 | 0 | 0 | c++,python,performance,opencv | 13,432,830 | 5 | false | 0 | 0 | You're right, Python is almost always significantly slower than C++ as it requires an interpreter, which C++ does not. However, that does require C++ to be strongly-typed, which leaves a much smaller margin for error. Some people prefer to be made to code strictly, whereas others enjoy Python's inherent leniency.
If yo... | 2 | 92 | 1 | I aim to start opencv little by little but first I need to decide which API of OpenCV is more useful. I predict that Python implementation is shorter but running time will be more dense and slow compared to the native C++ implementations. Is there any know can comment about performance and coding differences between th... | Does performance differ between Python or C++ coding of OpenCV? | 1 | 0 | 0 | 76,398 |
13,433,597 | 2012-11-17T18:42:00.000 | 5 | 0 | 0 | 1 | python,linux,streaming,video-streaming,audio-streaming | 13,435,380 | 2 | true | 1 | 0 | A good start for trying different options is to use vlc (http://www.videolan.org) Its file->transmit menu command opens a wizard with which you can play.
Another good one is gstreamer, (http://www.gstreamer.net), the gst-launch program in particular, which allows you to build pipelines from the command line. | 1 | 2 | 0 | I've been trying for a while but struggling. I have two projects:
Stream audio to server for distribution over the web
Stream audio and video from a webcam to a server for distribution over the web.
I have thus far tried ffmpeg and ffserver, PulseAudio, mjpegstreamer (I got this working but no audio) and IceCast all... | Streaming audio and video | 1.2 | 0 | 0 | 1,745 |
13,434,664 | 2012-11-17T20:52:00.000 | 0 | 0 | 0 | 0 | python,web-scraping,casperjs | 13,437,094 | 5 | false | 1 | 0 | Because you mentioned CasperJS I can assume that web site generate some data by using JavaScript. My suggestion would be check WebKit. It is a browser "engine", that will let you do what ever you want with web-site.
You can use PyQt4 framework, which is very good, and has a good documentation. | 1 | 2 | 0 | So I am trying to scrape something that is behind a login system. I tried using CasperJS, but am having issues with the form, so maybe that is not the way to go; I checked the source code of the site and the form name is "theform" but I can never login must be doing something wrong. Does any have any tutorials on how t... | Web scraping - web login issue | 0 | 0 | 1 | 684 |
13,436,032 | 2012-11-17T23:55:00.000 | 0 | 0 | 0 | 0 | python,colors,cluster-computing,k-means | 13,436,279 | 1 | true | 0 | 0 | You can use a vector quantisation. You can make a list of each pixel and each adjacent pixel in x+1 and y+1 direction and pick the difference and plot it along a diagonale. Then you can calculate a voronoi diagram and get the mean color and compute a feature vector. It's a bit more effectice then to use a simple grid ... | 1 | 0 | 1 | My score was to get the most frequent color in a image, so I implemented a k-means algorithm.
The algorithm works good, but the result is not the one I was waiting for.
So now I'm trying to do some improvements, the first I thought was to implement k-means++, so I get a beter position for the inicial clusters centers.
... | K-Means plus plus implementation | 1.2 | 0 | 0 | 1,239 |
13,438,920 | 2012-11-18T09:23:00.000 | 0 | 0 | 0 | 0 | django,python-2.7,django-views | 13,439,337 | 1 | true | 1 | 0 | A Django process is loaded once and remains active to handle incoming requests. So if you define the list as a global variable, it stays in RAM and all is fine. It is discouraged to manipulate the list though. | 1 | 1 | 0 | I have a very big python list ( ~ 1M strings) defined in a .py file. I import it in my views.py to access the list in my views.
My question is does the list gets loaded in RAM for every user coming to the web app, or does it loads just one single time and is used for all users ? | Understanding imports in views.py - Django | 1.2 | 0 | 0 | 95 |
13,440,079 | 2012-11-18T12:28:00.000 | 0 | 0 | 0 | 0 | python,operating-system | 13,440,101 | 2 | true | 1 | 0 | The access time for an individual file are not affected by the quantity of files in the same directory.
running ls -l on a directory with more files in it will take longer of course. Same as viewing that directory in the file browser. Of course it might be easier to work with these images if you store them in a subdir... | 1 | 0 | 0 | My website users can upload image files, which then need to be found whenever they are to be displayed on a page (using src = ""). Currently, I put all images into one directory. What if there are many files - is it slow to find the right file? Are they indexed? Should I create subdirectories instead?
I use Python/Dja... | Python/Django: how to get files fastest (based on path and name) | 1.2 | 0 | 0 | 57 |
13,442,981 | 2012-11-18T18:08:00.000 | 0 | 0 | 1 | 0 | python,data-structures | 13,443,464 | 3 | false | 0 | 0 | Don't subclass list, proxy it: override __getattribute__ to pass all calls through to the proxied list and then check your constraints. | 1 | 10 | 0 | I need a python list object which, upon insert, automatically checks for certain constraints of the form: "A must always come before B" or "If C is included, it must always come last".
What's the easiest/fastest way to go about implementing this. The obvious approach is to override all the methods of the list data type... | Implement a python list with constraints | 0 | 0 | 0 | 1,786 |
13,444,341 | 2012-11-18T20:41:00.000 | 0 | 1 | 0 | 0 | python,svn | 13,445,099 | 4 | false | 0 | 0 | you should use direct repository access via file:// this comparable to a slow hd (if you have fast CPU and HD)
use the svn bindings for your respective scripting language, do not rely on xml parsing, as they are much slower
do not read the whole tree out, but maintain a navigational hierarchy and read directories on de... | 2 | 2 | 0 | I am working on a repository management system for my university that will provide a gui for modifying permissions to individual folders in a subversion repository, and make it easy for professors to add directories for students and TA's, with the appropriate permissions. In order to make this work, I need to be able t... | Quickly retrieving svn directory trees | 0 | 0 | 0 | 292 |
13,444,341 | 2012-11-18T20:41:00.000 | 0 | 1 | 0 | 0 | python,svn | 13,444,407 | 4 | false | 0 | 0 | I would refer to a database solution.
The problem with a repository is simultaneous access. Using the database that stores the updates the repository gives you a reliable source of information to retrieve its layout.
I have done a fair amount of research for an internship and using a database is almost always the faste... | 2 | 2 | 0 | I am working on a repository management system for my university that will provide a gui for modifying permissions to individual folders in a subversion repository, and make it easy for professors to add directories for students and TA's, with the appropriate permissions. In order to make this work, I need to be able t... | Quickly retrieving svn directory trees | 0 | 0 | 0 | 292 |
13,444,534 | 2012-11-18T21:01:00.000 | 1 | 0 | 0 | 0 | android,python,django | 21,954,459 | 10 | false | 1 | 0 | Well if your end goal is to develop Web applications and host host them on your Android and since you had flask there why not give bottle.py a shot. It's just one file that you copy into your sl4a scripts folder and voila. Bottle is minimalist and near similar to flask. No rooting or Unix environments required. | 1 | 14 | 0 | I am a Django developer and wanted to know if anyone has any idea of the possibilities of installing and developing on Django using an Android tablet such as the nexus 7. This seems like a reasonably powerful device, can be hooked up with a bluetooth keyboard, and has linux at the core of the OS.
So - is it possible to... | Python + Django on Android | 0.019997 | 0 | 0 | 34,933 |
13,445,585 | 2012-11-18T23:08:00.000 | 0 | 0 | 0 | 0 | python,search,scrapy,web-crawler | 13,451,254 | 1 | true | 1 | 0 | different PROJECT for each site is a WORST idea .
different SPIDER for each site is a GOOD idea .
if you can adjust multiple sites in one SPIDER (based of there nature) is a BEST idea .
but again all depends on your Requirements. | 1 | 1 | 0 | I have a lot of different sites I want to scrape using scrapy. I was wondering what is the best way of doing this?
Do you use a different "project" for each site you want to scrape, or do you use a different "spider", or neither?
Any input would be appreciated | Scrapy Python Crawler - Different Spider for each? | 1.2 | 0 | 1 | 252 |
13,448,232 | 2012-11-19T05:35:00.000 | 2 | 1 | 0 | 0 | java,python | 13,448,289 | 5 | false | 0 | 0 | If you are just learning object oriented programming language then I will suggest you to start with JAVA. Because if you don't understand the ideas behind the object oriented programming nicely, you will certainly legging behind. but if you have good experience on the ideologies (i.e. structured programming language or... | 5 | 0 | 0 | I have opportunity to study either JAVA or PYTHON.
But I can't decide which to choose. I am already well versed with C++.
Can you plz tell which one is better with our experience. | Which to choose Python or java | 0.07983 | 0 | 0 | 194 |
13,448,232 | 2012-11-19T05:35:00.000 | 2 | 1 | 0 | 0 | java,python | 13,448,256 | 5 | false | 0 | 0 | This is a really relative questions and there is no "right" answer.
I personally would go with Python but I already took multiple Java classes. Python is fun and interesting but Java has been around for a while and isn't going anywhere any time soon. | 5 | 0 | 0 | I have opportunity to study either JAVA or PYTHON.
But I can't decide which to choose. I am already well versed with C++.
Can you plz tell which one is better with our experience. | Which to choose Python or java | 0.07983 | 0 | 0 | 194 |
13,448,232 | 2012-11-19T05:35:00.000 | 1 | 1 | 0 | 0 | java,python | 13,448,303 | 5 | false | 0 | 0 | Start out with Python; use Python for your own hackish projects - it's great for Web Apps and rapid prototyping.
Learn Java later on and you'll enjoy it; learn it before Python and you won't appreciate the kind of OOP Java has to offer as much.
This is from personal experience; again, like twodayslate mentioned, there ... | 5 | 0 | 0 | I have opportunity to study either JAVA or PYTHON.
But I can't decide which to choose. I am already well versed with C++.
Can you plz tell which one is better with our experience. | Which to choose Python or java | 0.039979 | 0 | 0 | 194 |
13,448,232 | 2012-11-19T05:35:00.000 | 1 | 1 | 0 | 0 | java,python | 13,448,294 | 5 | false | 0 | 0 | I feel, there is not much about the language. Its just implementing the logic. You can use anything to express that. But the have to keep in mind about the drivers and libraries available for the language that you are selecting | 5 | 0 | 0 | I have opportunity to study either JAVA or PYTHON.
But I can't decide which to choose. I am already well versed with C++.
Can you plz tell which one is better with our experience. | Which to choose Python or java | 0.039979 | 0 | 0 | 194 |
13,448,232 | 2012-11-19T05:35:00.000 | 3 | 1 | 0 | 0 | java,python | 13,448,259 | 5 | false | 0 | 0 | I'd say go for python.
Its very easy to code. | 5 | 0 | 0 | I have opportunity to study either JAVA or PYTHON.
But I can't decide which to choose. I am already well versed with C++.
Can you plz tell which one is better with our experience. | Which to choose Python or java | 0.119427 | 0 | 0 | 194 |
13,448,366 | 2012-11-19T05:49:00.000 | 1 | 0 | 0 | 0 | python,google-app-engine,app-engine-ndb | 21,716,718 | 3 | true | 1 | 0 | If you have a small app then your data probably live on the same part of the same disk and you have one instance. You probably won't notice eventual consistency. As your app grows, you notice it more. Usually it takes milliseconds to reach consistency, but I've seen cases where it takes an hour or more.
Generally, quer... | 3 | 8 | 0 | I am in the process of migrating an application from Master/Slave to HRD. I would like to hear some comments from who already went through the migration.
I tried a simple example to just post a new entity without ancestor and redirecting to a page to list all entities from that model. I tried it several times and it w... | In practice, how eventual is the "eventual consistency" in HRD? | 1.2 | 0 | 0 | 560 |
13,448,366 | 2012-11-19T05:49:00.000 | 0 | 0 | 0 | 0 | python,google-app-engine,app-engine-ndb | 13,457,830 | 3 | false | 1 | 0 | The replication speed is going to be primarily server-workload-dependent. Typically on an unloaded system the replication delay is going to be milliseconds.
But the idea of "eventually consistent" is that you need to write your app so that you don't rely on that; any replication delay needs to be allowable within the ... | 3 | 8 | 0 | I am in the process of migrating an application from Master/Slave to HRD. I would like to hear some comments from who already went through the migration.
I tried a simple example to just post a new entity without ancestor and redirecting to a page to list all entities from that model. I tried it several times and it w... | In practice, how eventual is the "eventual consistency" in HRD? | 0 | 0 | 0 | 560 |
13,448,366 | 2012-11-19T05:49:00.000 | 0 | 0 | 0 | 0 | python,google-app-engine,app-engine-ndb | 13,457,661 | 3 | false | 1 | 0 | What's the worst case if you get inconsistent results?
Does a user see some unimportant info that's out of date? That's probably ok.
Will you miscalculate something important, like the price of something? Or the number of items in stock in a store? In that case, you would want to avoid that chance occurence.
From ... | 3 | 8 | 0 | I am in the process of migrating an application from Master/Slave to HRD. I would like to hear some comments from who already went through the migration.
I tried a simple example to just post a new entity without ancestor and redirecting to a page to list all entities from that model. I tried it several times and it w... | In practice, how eventual is the "eventual consistency" in HRD? | 0 | 0 | 0 | 560 |
13,450,878 | 2012-11-19T09:28:00.000 | 1 | 0 | 0 | 0 | python,input,pygame | 13,451,666 | 1 | true | 0 | 1 | You can't do that, unless you use the input command in a different thread, but then you have to deal with syncronization (which might be what you want or don't want to do).
The way I'd implement this is to create a kind of in-game console. When a special key (e.g. '\') is pressed you make the console appear, and when y... | 1 | 2 | 0 | In Pygame, how can I get graphical input(e.g. clicking exit button) and also get input from the a terminal window simultaneously?
To give you context, my game has a GUI but gets its game commands from a "input()" command. How can I look for input from the command line while also handling graphics?
I'm not sure if this... | Pygame: Graphical Input + Text Input | 1.2 | 0 | 0 | 906 |
13,451,235 | 2012-11-19T09:48:00.000 | 1 | 1 | 0 | 1 | python,zip,backup,unzip | 13,451,351 | 4 | false | 0 | 0 | Rsync will automatically detect and only copy modified files, but seeing as you want to bzip the results, you still need to detect if anything has changed.
How about you output the directory listing (including time stamps) to a text file alongside your archive. The next time you diff the current directory structure aga... | 1 | 7 | 0 | This is the scenario. I want to be able to backup the contents of a folder using a python script. However, I want my backups to be stored in a zipped format, possibly bz2.
The problem comes from the fact that I don’t want to bother backing up the folder if the contents in the “current” folder are exactly the same as wh... | How to elegantly compare zip folder contents to unzipped folder contents | 0.049958 | 0 | 0 | 5,546 |
13,455,988 | 2012-11-19T14:37:00.000 | 2 | 0 | 0 | 0 | python,html,beautifulsoup | 13,456,177 | 1 | true | 1 | 0 | No, there is no way to force the .prettify() method to not output XHTML-compliant HTML. | 1 | 4 | 0 | I'm trying to parse and prettify a bunch of files made with Microsoft FrontPage.
Beautifulsoup parses them with no problem, but when I try to print the output with prettify(),
tags like <meta> or <br> are rewritten as <meta ... /> and <br/>.
Is there a way to force HTML output? | Beautifulsoup 4 prettify outputs XHTML, not HTML | 1.2 | 0 | 0 | 1,423 |
13,458,191 | 2012-11-19T16:36:00.000 | 2 | 0 | 0 | 0 | python,django,plugins,multilingual,django-hvad | 13,459,152 | 1 | true | 1 | 0 | You should act like this: extract each translation in single variable, put them in list ant let that list go to view. Then you can iterate through each translation in view. | 1 | 2 | 0 | I have an article object which has several languages. What's the best way to work with this object?
I need to display all attributes in every language.
Is is possible to get just my article object and iterate through the languages in the template?
Thanks for you help!
Ron | Django hvad - Best practice to work with multi-lingual object in template | 1.2 | 0 | 0 | 347 |
13,458,249 | 2012-11-19T16:40:00.000 | 1 | 1 | 0 | 0 | python,cron | 13,458,421 | 3 | false | 0 | 0 | You can't really set standard crons directly from Python. Instead, I'd set the cron to fire every hour, and in the code determine if it needs to run again (ie last successful execution is more than 7 days ago). | 1 | 0 | 0 | So I have a little script I wish to run once a week. It will check on some variable and if its set, it continues running the script, if not, I want it to wait an hour and try again. If it's still not set, it'll wait 2 hours, then 4, and then give up for the week. My question is, can I do this in python? Seems like ... | Creating and deleting cron jobs in python | 0.066568 | 0 | 0 | 1,865 |
13,459,647 | 2012-11-19T18:13:00.000 | 1 | 1 | 1 | 1 | python,eclipse,pydev | 14,926,237 | 1 | false | 0 | 0 | if you are using setuptools, you can try running sudo python setup.py develop on the egg as well as adding project dependencies between the two in Eclipse | 1 | 3 | 0 | I'm using pydev in eclipse.
I was hoping that pydev would first use the python classes I develop in my source dir. but since I also install the built egg into system dir, pydev also picks up the classes from system dir.
the problem is that pydev uses system dir first in its python path. so after I installed a buggy ver... | re-arrange pythonpath in pydev-eclipse? | 0.197375 | 0 | 0 | 464 |
13,460,288 | 2012-11-19T18:57:00.000 | 0 | 0 | 0 | 0 | python,selenium,webdriver | 13,460,962 | 2 | false | 0 | 0 | Very hacky, but you could modify the Webdriver Firefox plugin to point to your binary. | 1 | 3 | 0 | I'm trying to use Firefox portable for my tests in python. In plain webdriver it works, but i was wondering how to do it in remote webdriver.
All i could find is how to pass firefox profile, but how to specify to webdriver which binary to use? | How to specify browser binary in selenium remote webdriver? | 0 | 0 | 1 | 620 |
13,460,428 | 2012-11-19T19:08:00.000 | 0 | 0 | 0 | 0 | python,numpy,scipy | 13,463,491 | 1 | false | 0 | 0 | For computing Reimann sums you could look into numpy.cumsum(). I am not sure if you can do a surface or only an array with this method. However, you could always loop through all the rows of your terrain and store each row in a two dimensional array as you go. Leaving you with an array of all the terrain heights. | 1 | 0 | 1 | I am working on a visualization that models the trajectory of an object over a planar surface. Currently, the algorithm I have been provided with uses a simple trajectory function (where velocity and gravity are provided) and Runge-Kutta integration to check n points along the curve for a point where velocity becomes ... | Scipy / Numpy Reimann Sum Height | 0 | 0 | 0 | 329 |
13,462,448 | 2012-11-19T21:20:00.000 | 2 | 0 | 0 | 0 | database,python-2.7,couchdb,couchdb-python | 13,473,004 | 3 | true | 0 | 0 | In order to avoid NAT problems, I would use an external service like Cloudant or Iris Couch. You can replicate your local database against the common DB in the cloud and your colleagues can connect to it. | 1 | 1 | 0 | I created a couchDB on my computer, that is I used the Python line server = couchdb.Server('http://localhost:5984')
I want to share this database with two other colleagues. How can I make it available to them? For the moment, I am comfortable giving them full admin privileges until I get a better handle on this.
I tri... | How to access CouchDB server from another computer? | 1.2 | 0 | 1 | 2,338 |
13,464,456 | 2012-11-19T23:46:00.000 | 2 | 1 | 0 | 1 | python,installation,ubuntu-12.04 | 13,464,518 | 1 | true | 0 | 0 | As an absolute beginner, don't worry right now about where to install libraries. Simple example scripts that you're trying out for learning purposes don't belong being installed in any lib directory such as under /usr/lib/python.'
On Linux you want to do most work in your home directory, so just cd ~ to make sure you'... | 1 | 0 | 0 | I am learning python from learnpythonthehardway. in the windows I had no issues with going through a lots of exercises because the setup was easier but I want to learn linux as well and ubuntu seemed to me the nicest choice.
now I am having trouble with setting up. I can get access to the terminal and then usr/lib/pyt... | python library access in ubuntu 12.04 | 1.2 | 0 | 0 | 409 |
13,466,072 | 2012-11-20T03:15:00.000 | 0 | 0 | 0 | 0 | python,pyqt4 | 13,470,421 | 1 | false | 0 | 1 | I've worked on some software where every different pane is done as a separate. Ui file, so that they can be changed independently without requiring merges. It worked fine. Can you turn the map and dock parts into widgets, and then make a new "main window" ui, and then give that a layout and add the other two as child w... | 1 | 1 | 0 | I created a main app with a mdiArea for loading map graphics with Qt Designer *.ui and coded with pyQt4 using uic.loadUi() in python.
I also created a separate *.ui file and tested the dockWidget successfully in a separate python script file.
I wish to combine these 2 UI so that the main_app window will have the mdiAre... | Combining 2 UI as one main app window in python | 0 | 0 | 0 | 719 |
13,466,939 | 2012-11-20T05:08:00.000 | 3 | 0 | 1 | 0 | python,numpy | 13,467,084 | 1 | true | 0 | 0 | a compiler is unavailable, and no pre-built binaries can be installed
This... makes numpy impossible. If you cannot install numpy binaries, and you cannot compile numpy source code, then you are left with no options. | 1 | 2 | 1 | Assuming performance is not an issue, is there a way to deploy numpy in a environment where a compiler is unavailable, and no pre-built binaries can be installed?
Alternatively, is there a pure-python numpy implementation? | Installing (and using) numpy without access to a compiler or binaries | 1.2 | 0 | 0 | 435 |
13,468,755 | 2012-11-20T07:53:00.000 | 8 | 0 | 0 | 0 | python,selenium,scrapy | 16,050,387 | 2 | false | 1 | 0 | Updated: PhantomJS is abandoned, and you can use headless browsers directly now, such like Firefox and Chrome!
Use PhantomJS instead.
You can do browser = webdriver.PhantomJS() in selenium v2.32.0. | 1 | 2 | 0 | I want to do some web crawling with scrapy and python. I have found few code examples from internet where they use selenium with scrapy.
I don't know much about selenium but only knows that it automates some web tasks. and browser actually opens and do stuff. but i don't want the actual browser to open but i want every... | Can i use selenium with Scrapy without actual browser opening with python | 1 | 0 | 1 | 2,960 |
13,469,321 | 2012-11-20T08:38:00.000 | 7 | 0 | 0 | 0 | python,scrapy | 13,469,554 | 2 | false | 1 | 0 | If you insert directly inside a spider, then your spider will block until the data is inserted. If you create an Item and pass it to the Pipeline, the spider can continue to crawl while the data is inserted. Also, there might be race conditions if multiple spiders try to insert data at the same time. | 1 | 1 | 0 | I will be using scrapy to crawl a domain. I plan to store all that information into my db with sqlalchemy. It's pretty simple xpath selectors per page, and I plan to use HttpCacheMiddleware.
In theory, I can just insert data into my db as soon as I have data from the spiders (this requires hxs to be instantiated at le... | Scrapy why bother with Items when you can just directly insert? | 1 | 0 | 1 | 1,529 |
13,470,611 | 2012-11-20T09:55:00.000 | 0 | 0 | 1 | 0 | windows,python-3.x,cx-freeze | 13,814,960 | 3 | false | 0 | 1 | The only reason i know of that that can happen is if the _imagingtk.pyd is not for your python version.
Oh, could you post the link to the unofficial version? I've been searching for it for awhile. | 1 | 1 | 0 | I use Python 3 and unofficial PIL module. My code works fine. But after using cx_freeze I get exception "_imaging c module is not installed".
What can I do with this problem? All solutions that I found were about Python 2.X and Linux OS. I need the solution for Windows and Python 3. | After using cx_freeze I get exception _imaging c module is not installed | 0 | 0 | 0 | 348 |
13,473,489 | 2012-11-20T12:44:00.000 | 1 | 1 | 0 | 0 | python,web-applications,haskell,clojure,lisp | 13,476,327 | 4 | false | 1 | 0 | When the server-side creates the form, encode an hidden field with the timestamp of the request, so when the users POSTs his form, you can see the time difference.
How to implement that is up to you, which server you have available, and several other factors. | 1 | 1 | 0 | I'd like to make a webapp that asks people multiple choice questions, and times how long they take to answer.
I'd like those who want to, to be able to make accounts, and to store the data for how well they've done and how their performance is increasing.
I've never written any sort of web app before, although I'm a g... | How do I make a web server to make timed multiple choice tests? | 0.049958 | 0 | 0 | 947 |
13,476,383 | 2012-11-20T15:23:00.000 | 0 | 0 | 1 | 0 | python,python-imaging-library,python-unicode | 13,476,705 | 2 | false | 0 | 1 | Maybe use Unicode strings?? Like u'cadeau check 50 €' ... Now, does also your font have the corresponding glyphs? | 1 | 2 | 0 | I have a title ("cadeau check 50 €") in a form value that I want to write to a background image with arial.ttf. My text is correct but for the euro sign. I have 2 [] in place. I don't know where the problem is coming from. Is this an encoding problem in PIL, or have I a problem with the font? | PIL: how to draw € on an image with draw.text? | 0 | 0 | 0 | 785 |
13,478,965 | 2012-11-20T17:44:00.000 | 2 | 0 | 1 | 0 | python | 13,479,006 | 3 | false | 0 | 0 | You need to have an __init__.py file in the backend folder for Python to consider it a package. Then you can do import backend.handlers or from backend.handlers import foo | 1 | 0 | 0 | From main.py, I want to import a file from the backend folder
WebAppName/main.py
WebAppName/backend/handlers.py
How do I specify this as an import statement
I am aware that importing from the same folder is just import handlers
But this is a child directory, so how do I do this? | How do I import from a child directory / subfolder? | 0.132549 | 0 | 0 | 134 |
13,481,352 | 2012-11-20T20:15:00.000 | 0 | 0 | 0 | 0 | python,django,django-registration | 13,481,428 | 1 | true | 1 | 0 | LOGIN_REDIRECT_URL = '/'
This redirects to home url. | 1 | 0 | 0 | I am using django-registration and django-registration_defaults (for the templates) in my app. How do I change the page the user sees after he/she logs in? I looked through the documentation but was unable to find anything. | How to change the post-login page using django-registration? | 1.2 | 0 | 0 | 40 |
13,481,893 | 2012-11-20T20:50:00.000 | 0 | 0 | 1 | 1 | python,windows-8,cmd,environment-variables | 13,482,036 | 3 | false | 0 | 0 | Unless the project's folder is in the PATH, you cannot call the file unless you are inside the project's folder. Don't create PATHs for projects, unless they are needed; it's unnecessary.
Just transverse to the file's directory and run the command inside the directory. That will work.
If the project will b... | 1 | 2 | 0 | I am a Python beginner and I am having trouble running Python from CMD. I have added the Python installation directory as a PATH variable (;C:\Python27). I am able to run the Python Interpreter from CMD, however when I issue a command like "python file.py command" from CMD, it returns "Error2, Python can't open, no suc... | Running Python in CMD not working | 0 | 0 | 0 | 7,684 |
13,482,777 | 2012-11-20T21:47:00.000 | 1 | 0 | 0 | 0 | python,httplib,python-requests | 13,483,006 | 4 | false | 0 | 0 | It depends on how they are doing the redirection. The "right" way is to return a redirected HTTP status code (301/302/303). The "wrong" way is to place a refresh meta tag in the HTML.
If they do the former, requests will handle it transparently. Note that any sane error page redirect will still have an error status cod... | 2 | 18 | 0 | What I mean is, if I go to "www.yahoo.com/thispage", and yahoo has set up a filter to redirect /thispage to /thatpage. So whenever someone goes to /thispage, s/he will land on /thatpage.
If I use httplib/requests/urllib, will it know that there was a redirection? What error pages?
Some sites redirect user to /errorpage... | When I use python requests to check a site, if the site redirects me to another page, will I know? | 0.049958 | 0 | 1 | 17,050 |
13,482,777 | 2012-11-20T21:47:00.000 | 16 | 0 | 0 | 0 | python,httplib,python-requests | 13,483,018 | 4 | false | 0 | 0 | To prevent requests from following redirects use:
r = requests.get('http://www.yahoo.com/thispage', allow_redirects=False)
If it is in indeed a redirect, you can check the redirect target location in r.headers['location']. | 2 | 18 | 0 | What I mean is, if I go to "www.yahoo.com/thispage", and yahoo has set up a filter to redirect /thispage to /thatpage. So whenever someone goes to /thispage, s/he will land on /thatpage.
If I use httplib/requests/urllib, will it know that there was a redirection? What error pages?
Some sites redirect user to /errorpage... | When I use python requests to check a site, if the site redirects me to another page, will I know? | 1 | 0 | 1 | 17,050 |
13,483,004 | 2012-11-20T22:05:00.000 | 1 | 0 | 0 | 0 | python,django | 66,409,423 | 4 | false | 1 | 0 | You can try with following code
py -m django startproject add_your_project_name_here | 2 | 1 | 0 | I tried starting a new Django project yesterday but when I did "django-admin.py startproject projectname" I got an error stating: "django-admin.py is not recognized as an internal or external command." The strange thing is, when I first installed Django, I made a few projects and everything worked fine. But now after g... | Django-admin.py not being recognized suddenly | 0.049958 | 0 | 0 | 4,143 |
13,483,004 | 2012-11-20T22:05:00.000 | 1 | 0 | 0 | 0 | python,django | 59,301,923 | 4 | false | 1 | 0 | i am totally new to coding, so pardon my amateur answers.
I had similar problem - i realized that while my Django was installed on C Drive, my files were saved on D drive and i was trying to run django-admin from D drive in the command prompt which was giving the above error. what worked for me was the following
Loc... | 2 | 1 | 0 | I tried starting a new Django project yesterday but when I did "django-admin.py startproject projectname" I got an error stating: "django-admin.py is not recognized as an internal or external command." The strange thing is, when I first installed Django, I made a few projects and everything worked fine. But now after g... | Django-admin.py not being recognized suddenly | 0.049958 | 0 | 0 | 4,143 |
13,483,928 | 2012-11-20T23:21:00.000 | 2 | 0 | 1 | 0 | python,event-loop,tidesdk | 13,484,579 | 1 | true | 0 | 0 | There's nothing really specific to TideSDK here—this is a general issue with any program built around an event loop, which means nearly all GUI apps and network servers, among other things.
There are three standard solutions:
Break the long task up into a bunch of small tasks, each of which schedules the next to get r... | 1 | 0 | 0 | Is there a way to do long processing loops in Python without freezing the GUI with TideSDK?
or I'll just have to use threads...
Thanks. | TideSDK and long processing loops in Python | 1.2 | 0 | 0 | 433 |
13,484,482 | 2012-11-21T00:23:00.000 | 0 | 0 | 0 | 1 | python,applescript | 53,218,057 | 2 | false | 0 | 0 | My issue was an app with LSBackgroundOnly = YES set attempting to run an AppleScript that displays UI, such as display dialog ...
Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"
AppleScript.scpt: execution error: No user interaction allowed. (-1713)
Using tell application "Finder" ... or etc. works... | 1 | 5 | 0 | I have the applescript which will displays menu list and allow user to select menu items etc.
It runs fine by itself. And now I try to run it in python. I get the No user interaction allowed. (-1713) error.
I looked online. I tried the following:
add on run function in the same applescript, so what i did is just a... | "No user interaction allowed" When running AppleScript in python | 0 | 0 | 0 | 5,247 |
13,487,181 | 2012-11-21T05:51:00.000 | 0 | 0 | 1 | 0 | python,sockets,shared-memory | 13,500,968 | 2 | false | 0 | 0 | First, note that what you're trying to build will require more than just shared memory: it's all well if a.py writes to shared memory, but how will b.py know when the memory is ready and can be read from? All in all, it is often simpler to solve this problem by connecting the multiple processes not via shared memory, ... | 2 | 2 | 0 | I have a processes from several servers that send data to my local port 2222 via udp every second.
I want to read this data and write it to shared memory so there can be other processes to read the data from shared memory and do things to it.
I've been reading about mmap and it seems I have to use a file... which I can... | how to write to shared memory in python from stream? | 0 | 0 | 0 | 2,659 |
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