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
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16,161,992 | 2013-04-23T05:57:00.000 | 3 | 0 | 0 | 0 | java,python,protocol-buffers | 16,162,045 | 2 | false | 0 | 0 | Is a .proto file enough to have get all the data out of?
The proto file is used to define the structure of the message. Each field is given a tag number. As long as you have the right proto file, the data can be de-serialized correctly. Yes the proto file will suffice.
one team can create the proto file and serializ... | 2 | 2 | 0 | I'm missing something with protobuffers. Here is some questions that I have that I'm having difficulties answering.
Is a .proto file enough to have get all the data out of? In the address book example that is on the site they seem to write the data out to a file and consume it out of a file (separate than the .proto ... | Please help me understand protocol buffers | 0.291313 | 0 | 1 | 165 |
16,161,992 | 2013-04-23T05:57:00.000 | 0 | 0 | 0 | 0 | java,python,protocol-buffers | 16,162,532 | 2 | false | 0 | 0 | Think of it this way
Client side java code
- proto encoder
- - bytes
======= network =======
- - bytes
- proto decoder
Server side java code
Instead of the network, the bytes may be written to a file by one side and read from it by the other. Whichever.
In order for proto encoder and proto decoder to do their job, the... | 2 | 2 | 0 | I'm missing something with protobuffers. Here is some questions that I have that I'm having difficulties answering.
Is a .proto file enough to have get all the data out of? In the address book example that is on the site they seem to write the data out to a file and consume it out of a file (separate than the .proto ... | Please help me understand protocol buffers | 0 | 0 | 1 | 165 |
16,163,085 | 2013-04-23T07:09:00.000 | 1 | 0 | 1 | 0 | python,virtualenv,pip | 16,164,433 | 1 | false | 0 | 0 | In reality, there is a more severe danger: pip downloads packages via plain HTTP, end even if you force it to use HTTPS, it can not check id the certificate is valid (since Python stdlib does not have the functionality either). That is someone in the middle can mask the expected package with something that you will rea... | 1 | 3 | 0 | We heavily use virtualenv and pip in our build system to isolate our Python deliveries. Everything is fully automated and was working fine until now.
A couple of days ago, an issue appeared: an indirect dependency was moved to a private bitbucket repository, and pip started to prompt for a login/password. Which was dra... | How to protect yourself from package disappearance on pip? | 0.197375 | 0 | 0 | 92 |
16,167,995 | 2013-04-23T11:18:00.000 | 1 | 0 | 1 | 0 | windows,python-2.7,tkinter,virtual-machine | 16,169,706 | 1 | false | 0 | 1 | You cannot do what you want. It is impossible to open an external program inside a Tkinter window.
While it is true that it's possible to embed some X11 based apps into an X11 based Tkinter application if the app was designed to be embedded, you will never be able to do this with non-X11 based apps. | 1 | 1 | 0 | I am trying to open the applications like notepad,photoshop,etc. inside the Tkinter window in Python. I tried using os.sytem() but it opens independently(not inside Tkinter window).
I had searched a lot about this but didn't got any solution. Any kind of help will be appreciated. | How to open an exe file in Tkinter window | 0.197375 | 0 | 0 | 553 |
16,170,268 | 2013-04-23T13:11:00.000 | 1 | 1 | 1 | 0 | python-2.7,module | 16,173,774 | 2 | false | 0 | 0 | Are you using distutils or setuptools?
I tested right now, and if it's distutils, it's enough to have
scripts=['bin/script_name']
in your setup() call
If instead you're using setuptools you can avoid to have a script inside bin/ altogether and define your entry point by adding
entry_points={'console_scripts': ['script_... | 1 | 2 | 0 | I have written a python27 module and installed it using python setup.py install.
Part of that module has a script which I put in my bin folder within the module before I installed it. I think the module has installed properly and works (has been added to site-packages and scripts). I have built a simple script "test.py... | How to execute python script from a module I have made | 0.099668 | 0 | 0 | 106 |
16,171,245 | 2013-04-23T13:55:00.000 | 3 | 0 | 0 | 1 | python,linux | 16,173,056 | 2 | true | 0 | 0 | To run a process with the name mysoft,
Create a python with the name mysoft without .py extension.
Inside that file create a endless while loop or something like that, in a way that it runs long time. Or put a line like raw_input("enter something"). It will wait until you give the input.
Make the file executable by ... | 2 | 2 | 0 | I'm currently working on a stub for tests purpose. Using Python I need to create a process with a specific name ("mysoft") and a specific pid ("1234")
My final purpose is to be able to run the command "pgrep mysoft" on a terminal and get the PID I set (1234).
The process doesn't need to do anything, it just need to exi... | create fake process in Python | 1.2 | 0 | 0 | 1,984 |
16,171,245 | 2013-04-23T13:55:00.000 | 1 | 0 | 0 | 1 | python,linux | 16,171,310 | 2 | false | 0 | 0 | You can't create processes with specific PIDs. The PID is assigned by the OS. | 2 | 2 | 0 | I'm currently working on a stub for tests purpose. Using Python I need to create a process with a specific name ("mysoft") and a specific pid ("1234")
My final purpose is to be able to run the command "pgrep mysoft" on a terminal and get the PID I set (1234).
The process doesn't need to do anything, it just need to exi... | create fake process in Python | 0.099668 | 0 | 0 | 1,984 |
16,171,519 | 2013-04-23T14:07:00.000 | 1 | 1 | 0 | 0 | python,python-2.7 | 16,401,807 | 1 | false | 0 | 0 | first, use the latest version of minepy. Second, you can use a smaller value of "alpha" parameter, say 0.5 or 0.45. In this way, you will reduce the computational time in despite of characteristic matrix accuracy.
Davide | 1 | 0 | 1 | I have a numerical matrix of 2500*2500. To calculate the MIC (maximal information coefficient) for each pair of vectors, I am using minepy.MINE, but this is taking forever, can I make it faster? | how to make minepy.MINE run faster? | 0.197375 | 0 | 0 | 425 |
16,172,839 | 2013-04-23T15:05:00.000 | 1 | 0 | 1 | 1 | python,linux,bash,service | 16,173,008 | 1 | false | 0 | 0 | I would start it using init and monitor at interval with a seperate script using crontab watching for a PID file it creates.
Alternatively, if you can find the PID ID using your crontab script (using ps) and re-init the script if it doesn't exist.
My 2 Cents.. | 1 | 0 | 0 | I have a script on my machine that I want to start running as the machine boots and will attempt run again should it crash or otherwise fail.
Would this mean turing it into a service? I realise I could use the crontab and use @reboot, but that doesn't fix the issue should the script crash | Running a python script persistently | 0.197375 | 0 | 0 | 572 |
16,176,738 | 2013-04-23T18:37:00.000 | -1 | 0 | 0 | 0 | python,formatting,conditional,xlrd,xlwt | 47,033,397 | 2 | false | 0 | 0 | True that xlswriter makes formatting pretty easy, but i think it can not be used for appending data tpsheets, which i feel is a big drawback. | 1 | 6 | 0 | I have seen some posts that say you can NOT perform conditional formatting using xlwt, but they were rather old. I was curious if this has evolved?
I have been searching for about half a day now. Furthermore, if I con't write it directly from xlwt, can I create an .xls file containing a single cell with the conditiona... | Conditional Formatting xlwt | -0.099668 | 0 | 0 | 3,948 |
16,177,610 | 2013-04-23T19:26:00.000 | 8 | 0 | 1 | 0 | python,performance,data-structures,artificial-intelligence | 16,177,714 | 3 | true | 0 | 0 | Using a Python dictionary is the way to go. | 2 | 0 | 0 | I am developing AI to perform MDP, I am getting states(just integers in this case) and assigning it a value, and I am going to be doing this a lot. So I am looking for a data structure that can hold(no need for delete) that information and will have a very fast get/update function. Is there something faster than the re... | Fastest Get Python Data Structures | 1.2 | 0 | 0 | 1,839 |
16,177,610 | 2013-04-23T19:26:00.000 | 1 | 0 | 1 | 0 | python,performance,data-structures,artificial-intelligence | 16,201,956 | 3 | false | 0 | 0 | If you want a rapid prototype, use python. And don't worry about speed.
If you want to write fast scientific code (and you can't build on fast native libraries, like LAPACK for linear algebra stuff) write it in C, C++ (maybe only to call from Python). If fast instead of ultra-fast is enough, you can also use Java or Sc... | 2 | 0 | 0 | I am developing AI to perform MDP, I am getting states(just integers in this case) and assigning it a value, and I am going to be doing this a lot. So I am looking for a data structure that can hold(no need for delete) that information and will have a very fast get/update function. Is there something faster than the re... | Fastest Get Python Data Structures | 0.066568 | 0 | 0 | 1,839 |
16,180,946 | 2013-04-23T23:35:00.000 | 2 | 0 | 0 | 0 | python,matplotlib,axis | 16,180,974 | 3 | false | 0 | 0 | I would look at the largest value in your data set (i.e. the histogram bin values) multiply that value by a number greater than 1 (say 1.5) and use that to define the y axis value. This way it will appear above your histogram regardless of the values within the histogram. | 1 | 90 | 1 | I am drawing a histogram using matplotlib in python, and would like to draw a line representing the average of the dataset, overlaid on the histogram as a dotted line (or maybe some other color would do too). Any ideas on how to draw a line overlaid on the histogram?
I am using the plot() command, but not sure how to d... | Drawing average line in histogram (matplotlib) | 0.132549 | 0 | 0 | 127,120 |
16,183,941 | 2013-04-24T05:21:00.000 | 1 | 0 | 1 | 0 | python,algorithm,alphabetical | 16,186,125 | 6 | false | 0 | 0 | As simple as a tree
Let suppose you have give "1261"
Construct a tree with it a Root .
By defining the node(left , right ) , where left is always direct map and right is combo
version suppose for the if you take given Number as 1261
1261 ->
(1(261) ,12(61)) -> 1 is left-node(direct map -> a) 12 is right node(combo... | 1 | 1 | 1 | I have just come across an interesting interview style type of question which I couldn't get my head around.
Basically, given a number to alphabet mapping such that [1:A, 2:B, 3:C ...], print out all possible combinations.
For instance "123" will generate [ABC, LC, AW] since it can be separated into 12,3 and 1,23.
I'... | How to generate a list of all possible alphabetical combinations based on an input of numbers | 0.033321 | 0 | 0 | 1,582 |
16,185,594 | 2013-04-24T07:11:00.000 | 0 | 0 | 0 | 0 | python,qt,user-interface,qt-designer,serial-communication | 16,185,984 | 1 | false | 0 | 1 | Use a thread to monitor the serial port. Use appropriate mechanisms to communicate with the UI (main) thead.
That way you can write your comm module without worrying about the event base nature of the UI. Of course you still cannot use a busy while loop to listen to the serial port. But using the usual read() methods w... | 1 | 1 | 0 | I used to use TKinter for my GUIS and am now trying to move to QT Designer. I am also new to event based programming. What I am trying to do is listen to communication on my serial port continuously after a start button has been pressed.
I want to call a function update() which takes in the data and manipulates it and ... | Running continuous communications using QT and python | 0 | 0 | 0 | 260 |
16,186,027 | 2013-04-24T07:31:00.000 | 1 | 0 | 0 | 1 | python,windows,network-programming | 16,189,674 | 1 | false | 0 | 0 | Until you don't implement your own packet filter driver you can't do that just looking on a data stream captured via network card promiscuous mode. | 1 | 1 | 0 | Is there a way to determine which process is sending a particular packet. I am capturing packets on Network Interface card and want to determine the process for each packet. I am working in python under Windows. | Determine process for outbound packets | 0.197375 | 0 | 0 | 65 |
16,191,318 | 2013-04-24T11:53:00.000 | 1 | 0 | 0 | 1 | python,google-app-engine,google-cloud-datastore | 16,191,993 | 1 | true | 1 | 0 | Why is what you describe not possible? The object representing the logged-in user is an instance of google.appengine.api.users.User. That object has a user_id property. You can use that ID as a field in your own user model, to which you can add a field determining whether or not they are an admin. | 1 | 0 | 0 | I am developing an app in GAE. Application provides different view depending upon whether logged-in user is admin or normal user. I want to use 'Google Apps domain' as Authentication Type. So that all user of my domain can login into the application and use it.
Here, application can't differentiate a logged-in as admin... | Differentiating logged-in users as admin and normal user in Google App Engine? | 1.2 | 0 | 0 | 145 |
16,193,630 | 2013-04-24T13:43:00.000 | 0 | 0 | 0 | 0 | sqlite,python-3.x | 23,542,492 | 1 | true | 0 | 0 | As the pysqlite author I am pretty sure nobody has ported pysqlite 1.x to Python 3 yet. The only solution that makes sense effort-wise is the one theomega suggested.
If all you need is access the data from Python for importing them elsewhere, but doing the sqlite2 dump/sqlite3 restore dance is not possible, there is an... | 1 | 0 | 0 | I have an old SQLite 2 database that I would like to read using Python 3 (on Windows). Unfortunately, it seems that Python's sqlite3 library does not support SQLite 2 databases. Is there any other convenient way to read this type of database in Python 3? Should I perhaps compile an older version of pysqlite? Will such ... | Read an SQLite 2 database using Python 3 | 1.2 | 1 | 0 | 445 |
16,196,268 | 2013-04-24T15:38:00.000 | 29 | 1 | 1 | 0 | python,python-2.7 | 31,109,017 | 6 | false | 0 | 0 | So if your a novice like myself and your directories are not very well organized you may want to try this method.
Open your python terminal. Import a module that you know works such as numpy in my case and do the following.
Import numpy
numpy.__file__
which results in
'/Library/Frameworks/Python.framework/Versions/3.4... | 2 | 103 | 0 | I have my own package in python and I am using it very often. what is the most elegant or conventional directory where i should put my package so it is going to be imported without playing with PYTHONPATH or sys.path?
What about site-packages for example?
/usr/lib/python2.7/site-packages.
Is it common in python to copy... | Where should I put my own python module so that it can be imported | 1 | 0 | 0 | 102,848 |
16,196,268 | 2013-04-24T15:38:00.000 | 1 | 1 | 1 | 0 | python,python-2.7 | 38,079,471 | 6 | false | 0 | 0 | On my Mac, I did a sudo find / -name "site-packages". That gave me a few paths like /Library/Python/2.6/site-packages, /Library/Python/2.7/site-packages, and /opt/X11/lib/python2.6/site-packages.
So, I knew where to put my modules if I was using v2.7 or v2.6.
Hope it helps. | 2 | 103 | 0 | I have my own package in python and I am using it very often. what is the most elegant or conventional directory where i should put my package so it is going to be imported without playing with PYTHONPATH or sys.path?
What about site-packages for example?
/usr/lib/python2.7/site-packages.
Is it common in python to copy... | Where should I put my own python module so that it can be imported | 0.033321 | 0 | 0 | 102,848 |
16,198,789 | 2013-04-24T17:45:00.000 | 2 | 0 | 1 | 0 | python,macos,pip,macports | 16,550,756 | 2 | true | 0 | 0 | If you are using macports for python then you should install pip and easy_install via macports as well. You seem to have a non macports pipon your path.
installing py27-pip will give you a pip-2.7 executable script on your path, similarly for easy_install.
The macports version have the python version in their name so a... | 1 | 0 | 0 | I've got a mac on which I installed python using macports. I like it this way because I could manually install numpy, scipy etc. without needing to mess with pre-built packages like enthought. I now wanted to install web.py, but after trying to install it through both easy_install and pip, I can't import it on the inte... | How to make pip install python modules in my current python2.7 installation on mac (instead of 2.6)? | 1.2 | 0 | 0 | 3,596 |
16,203,729 | 2013-04-24T23:06:00.000 | 0 | 0 | 1 | 0 | python,excel,csv | 16,203,954 | 1 | true | 0 | 0 | If you can convert from excel to csv using a different delimiter, e.g. ; instead of comma, you can remove the commas from the converted file, then convert the csv delimiter (;) back to comma. | 1 | 0 | 0 | I have the python code to convert an excel file to csv, however portions of the data in the excel file have commas which affects the conversion.
What would be the best way, staying within python, to remove the commas then convert? | Using python I need to remove commas from my excel file and then convert it to csv | 1.2 | 0 | 0 | 875 |
16,203,859 | 2013-04-24T23:19:00.000 | 1 | 1 | 0 | 0 | php,python,mysql,sql,ruby | 16,203,901 | 3 | false | 0 | 0 | I believe the only one can answer this question is you. All 3 examples you gave can do what you need to do with cron to automate the job. But the best script language to be used is the one you are most comfortable to use. | 1 | 0 | 0 | What's the best way to automatically query several dozen MySQL databases with a script on a nightly basis? The script usually returns no results, so I'd ideally have it email or notify me if any are ever returned.
I've looked into PHP, Ruby and Python for this, but I'm a little stumped as to how best to handle this. | What's the best way to automate running MySQL scripts on several databases on a daily basis? | 0.066568 | 1 | 0 | 307 |
16,204,914 | 2013-04-25T01:23:00.000 | 0 | 0 | 0 | 1 | python,windows,concurrent-programming | 16,208,557 | 1 | false | 0 | 0 | The reason was that each process used massive memory, and I tried to work it concurrently. It was over capacity. It was frequently swapping out, but it was hidden by SQLite access which was also working hard with my HDD.
I would like to thank Lennart, who notified me to check other params in my computer, and everybody ... | 1 | 0 | 0 | There is a python script I built called convert.py, which is a file converter (SQLite3 -> SQLite3). It takes about 30 minutes to finish, working on with heavy CPU and I/O.
I opened 30 CMD.EXE windows on my computer (Windows 7, CPU with 2 cores and hyper-threading), and started convert.py on each window. I let them wor... | Why is my heavy python script pausing on windows? Can it be prevented? | 0 | 0 | 0 | 108 |
16,212,161 | 2013-04-25T10:18:00.000 | 0 | 0 | 0 | 0 | python,django,tcp-ip | 16,217,531 | 1 | true | 1 | 0 | You'll probably have to listen on the port from another process, or thread. Save the incoming data somewhere, whether it be a log file, database, or whatever. Then have Django use this data when it prepares the web page to send in response to requests on the URL. | 1 | 0 | 0 | I am trying to connect a django URL to incoming data on TCP/IP Port.
It would be great if someone, could shed some light on this | How to Connect My Django App with incoming data on a TCP Port | 1.2 | 0 | 0 | 797 |
16,214,803 | 2013-04-25T12:28:00.000 | 2 | 0 | 0 | 1 | python,google-app-engine,google-cloud-datastore,flask | 16,215,227 | 1 | true | 1 | 0 | As I explained in your other question, you need a separate class. User is not a model, and it is not stored in the datastore. It's simply a combination of the user_id and email that are obtained from Google's accounts system when you log in. If you want to store something about the user, you need to create your own mod... | 1 | 0 | 0 | I am working on an App using Flask and App Engine, which requires extra information to be stored in User Object apart from nickname, email and user_id.
Is it possible to extend User class in datastore?
If not, is there is any workaround? I am planning to have my own User model. So, once user logs into the app(using goo... | Adding extra properties to the User class in App Engine datastore? | 1.2 | 0 | 0 | 395 |
16,218,288 | 2013-04-25T15:03:00.000 | 3 | 1 | 1 | 0 | python,ironpython,python-import | 16,218,323 | 2 | false | 0 | 0 | You should not do the import globally, but inside a function which gets called after you appended the path. | 1 | 2 | 0 | I have a (single) .py script. In it, I need to import a library.
In order for this library to be found, I need to call sys.path.append. However, I do not want to hardcode the path to the library, but pass it as a parameter.
So my problem is that if I make a function (set_path) in this file, I need to import the file,... | Python: sys.path.append vs. import? | 0.291313 | 0 | 0 | 741 |
16,219,178 | 2013-04-25T15:43:00.000 | 0 | 0 | 0 | 0 | java,python,selenium | 16,219,793 | 1 | false | 1 | 0 | The script has to run first and create the browser session. Currently AFAIK there is no way to take webdriver control of a browser that is already open. | 1 | 0 | 0 | I have a scrip (using Python) that submits to a form on www.example.com/form/info.php
currently my script will:
- open Firefox
- enter name, age, address
- press submit
what I want to do is have a web form (with name, age, address) on LAMP and when the user press submit it adds those options to the selenium script (to... | Is it possible to run selenium script from web browser? | 0 | 0 | 1 | 114 |
16,220,046 | 2013-04-25T16:27:00.000 | 0 | 0 | 1 | 1 | python,windows | 16,220,212 | 3 | false | 0 | 0 | You can try one solution. You can call some powershell command as Write-Host (echo equivalent in cmd) from Python code and get call result. If it fails is not PowerShell. (I can not test it now). | 1 | 2 | 0 | I'm writing a python program that I want to run differently whether it runs on the windows command prompt or windows powershell. I was wondering if there was a way to determine the environment python runs on within the program.
Thanks in advance! | Determining environment python runs on | 0 | 0 | 0 | 61 |
16,220,585 | 2013-04-25T16:57:00.000 | -1 | 0 | 1 | 0 | python,random,numpy,prng | 16,223,497 | 2 | false | 0 | 0 | If reproducibility is very important to you, I'm not sure I'd fully trust any PRNG to always produce the same output given the same seed. You might consider capturing the random numbers in one phase, saving them for reuse; then in a second phase, replay the random numbers you've captured. That's the only way to elimi... | 2 | 3 | 1 | We have a very simple program (single-threaded) where we we do a bunch of random sample generation. For this we are using several calls of the numpy random functions (like normal or random_sample). Sometimes the result of one random call determines the number of times another random function is called.
Now I want to se... | Python numpy - Reproducibility of random numbers | -0.099668 | 0 | 0 | 1,368 |
16,220,585 | 2013-04-25T16:57:00.000 | 5 | 0 | 1 | 0 | python,random,numpy,prng | 16,296,438 | 2 | true | 0 | 0 | Okay, David was right. The PRNGs in numpy work correctly. Throughout every minimal example I created, they worked as they are supposed to.
My problem was a different one, but finally I solved it. Do never loop over a dictionary within a deterministic algorithm. It seems that Python orders the items arbitrarily when cal... | 2 | 3 | 1 | We have a very simple program (single-threaded) where we we do a bunch of random sample generation. For this we are using several calls of the numpy random functions (like normal or random_sample). Sometimes the result of one random call determines the number of times another random function is called.
Now I want to se... | Python numpy - Reproducibility of random numbers | 1.2 | 0 | 0 | 1,368 |
16,220,930 | 2013-04-25T17:19:00.000 | 0 | 0 | 1 | 0 | python,header | 16,220,952 | 6 | false | 0 | 0 | In this context, you are correct. A header block means a set of comments at the top of the source file that contains the requested information. It does not need to contain any code that does anything. | 1 | 20 | 0 | I'm new to Python and programming in general. I am taking a module at university which requires me to write some fairly basic programs in Python. However, I got this feedback on my last assignment:
There should be a header block containing the file name, author name, date created, date modified and python version
Wha... | Python: What is a header? | 0 | 0 | 0 | 87,904 |
16,222,064 | 2013-04-25T18:28:00.000 | 0 | 0 | 0 | 0 | java,python,design-patterns,error-handling,software-design | 16,224,608 | 2 | false | 0 | 0 | For every exception your app throws you insert it into a db, your error code is the id for that record, that's what the user sees. Obviously same exception gets the same id. The plugin information you need is stored in the DB | 1 | 1 | 0 | UPDATE:
The error codes here is not such a return value of a function. Actually I am not discussing using exception or error codes for error handling. I am trying to figure out, using what pattern to organize errors.
What I am really doing is like error codes showing on Windows blue screen. Back to the very old time,... | How to design extendable error codes? | 0 | 0 | 0 | 838 |
16,223,006 | 2013-04-25T19:18:00.000 | 4 | 0 | 1 | 0 | python,module,field,openerp | 16,229,121 | 1 | true | 1 | 0 | What you want currently not possible in openerp. But you can use one trick, you should use two fields one is integer for giving interval and other in char fields for giving months, days etc. You can get this example on Scheduler , ir.cron object of opener. | 1 | 0 | 0 | I need a field that can contain a number and text on it, like for example "6 months", i've used the datetime field, but it only takes a formatted date on it, and if use integer or float it takes a number, and char takes only a character, so how can i have an integer and a char on the same field? | DateTime field OpenErp | 1.2 | 0 | 0 | 422 |
16,224,901 | 2013-04-25T21:18:00.000 | 1 | 1 | 1 | 1 | python,next | 16,225,009 | 3 | false | 0 | 0 | though you could call ByteIter.next() in 2.6. This is not recommended however, as the method has been renamed in python 3 to next(). | 1 | 2 | 0 | When I do next(ByteIter, '')<<8 in python, I got a name error saying
"global name 'next' is not defined"
I'm guessing this function is not recognized because of python version? My version is 2.5. | Python: next() is not recognized | 0.066568 | 0 | 0 | 2,002 |
16,225,782 | 2013-04-25T22:27:00.000 | 1 | 1 | 1 | 0 | python | 16,225,924 | 2 | false | 0 | 0 | The help() function gives you help on almost everything but if your searching for something (like a module to use) then type help('modules') and it will search for available modules.
Then if you need to find information about a module load it and type dir(module_name) to see the methods that are defined in the module. | 1 | 2 | 0 | Is there a way to check what a function or a method does inside of python itself similar to the help function in Matlab. I want to get the definition of the function without having to Google it. | Python: Function Documentation | 0.099668 | 0 | 0 | 2,004 |
16,228,532 | 2013-04-26T04:00:00.000 | 0 | 0 | 0 | 0 | python,set,trace,pdb | 57,042,360 | 2 | false | 0 | 0 | change the name file pdb.py same bdb_test.py it run with me | 2 | 0 | 0 | When I insert import pdb; pdb.set_trace() in my code, it shows an error message:
'module' object has attribute 'set_trace'
In the pdb.py file, there is the def set_trace() function. How can it not work?
Has anyone had the same problem and knows how to solve this? | pdb.set_trace() not working | 0 | 0 | 0 | 3,446 |
16,228,532 | 2013-04-26T04:00:00.000 | 0 | 0 | 0 | 0 | python,set,trace,pdb | 65,112,924 | 2 | false | 0 | 0 | What Python version are you using?
I can reproduce that error if I try to import pdb; pdb.set_trace() on Python 3.8.
Try to use breakpoint() instead (has basically the same purpose), it worked for me!
Cheers,
Andres | 2 | 0 | 0 | When I insert import pdb; pdb.set_trace() in my code, it shows an error message:
'module' object has attribute 'set_trace'
In the pdb.py file, there is the def set_trace() function. How can it not work?
Has anyone had the same problem and knows how to solve this? | pdb.set_trace() not working | 0 | 0 | 0 | 3,446 |
16,230,984 | 2013-04-26T07:29:00.000 | 0 | 0 | 0 | 0 | python,machine-learning,nlp,classification,nltk | 16,231,323 | 2 | false | 0 | 0 | I see two questions
How to train the system?
Can the system consist of "sci-fi" and "others"?
The answer to 2 is yes. Having a 80% confidence threshold idea also makes sense, as long as you see with your data, features and algorithm that 80% is a good threshold. (If not, you may want to consider lowering it if not a... | 2 | 0 | 1 | I am just starting out with nltk, and I am following the book. Chapter six is about text classification, and i am a bit confused about something. In the examples (the names, and movie reviews) the classifier is trained to select between two well-defined labels (male-female, and pos-neg). But how to train if you have on... | train nltk classifier for just one label | 0 | 0 | 0 | 441 |
16,230,984 | 2013-04-26T07:29:00.000 | 0 | 0 | 0 | 0 | python,machine-learning,nlp,classification,nltk | 16,231,216 | 2 | true | 0 | 0 | You can simply train a binary classifier to distinguish between sci-fi and not sci-fi
So train on the movie plots that are labeled as sci-fi and also on a selection of all other genres. It might be a good idea to have a representative sample of the same size for the other genres such that not all are of the romantic co... | 2 | 0 | 1 | I am just starting out with nltk, and I am following the book. Chapter six is about text classification, and i am a bit confused about something. In the examples (the names, and movie reviews) the classifier is trained to select between two well-defined labels (male-female, and pos-neg). But how to train if you have on... | train nltk classifier for just one label | 1.2 | 0 | 0 | 441 |
16,233,593 | 2013-04-26T09:53:00.000 | 6 | 0 | 1 | 0 | python,string,strip | 16,234,651 | 5 | false | 0 | 0 | unicode('foo,bar').translate(dict([[ord(char), u''] for char in u','])) | 1 | 85 | 0 | How can I strip the comma from a Python string such as Foo, bar? I tried 'Foo, bar'.strip(','), but it didn't work. | How to strip comma in Python string | 1 | 0 | 0 | 186,115 |
16,236,364 | 2013-04-26T12:22:00.000 | 1 | 0 | 0 | 0 | python,openerp,rml | 16,248,525 | 1 | false | 1 | 0 | that's a little bit tricky thing, you should refer to "survey" module's report of openerp, which has such reports. I hope it helps.
Cheers,
Parthiv | 1 | 0 | 0 | I am going to implement BlockTable, I have taken a BlockTable inside
section and I want <tr> color dynamic, like striped(one white & one grey)
but have no idea how to do.
Can anyone help me. | How to make Striped RML table in openerp? | 0.197375 | 0 | 0 | 280 |
16,236,652 | 2013-04-26T12:37:00.000 | 4 | 0 | 0 | 0 | python | 16,236,700 | 3 | true | 0 | 0 | Well, to convert your example, you would use np.random.normal(x, *P). However, np.random.normal(x,a,b,c,...,z) wouldn't actually work. Maybe you meant another function? | 1 | 0 | 1 | I am trying to use function np.random.curve_fit(x,a,b,c,...,z) with a big but fixed number of fitting parameters. Is it possible to use tuples or lists here for shortness, like np.random.curve_fit(x,P), where P=(a,b,c,...,z)? | list instead of separated arguments in python | 1.2 | 0 | 0 | 77 |
16,237,742 | 2013-04-26T13:30:00.000 | 1 | 0 | 0 | 1 | python,google-app-engine,authentication,google-cloud-endpoints | 16,270,248 | 1 | true | 1 | 0 | That is exactly what you need to do. On the server, generate a key (you choose the length), and store it in the datastore. When the other server makes a request, use HTTPS and include the key. Its like an API key (it is actually). | 1 | 0 | 0 | I cannot see how I could authenticate a server with vs GAE.
Let's say I have an application on GAE which have some data and I somehow need this data on another server.
It is easy to enable OAuth authentication on GAE but here I cannt use this since there is no "account" binded to my server.
Plus GAE doesn't support cli... | Authenticate a server versus an AppEngine application | 1.2 | 0 | 0 | 77 |
16,241,755 | 2013-04-26T17:09:00.000 | 2 | 0 | 0 | 0 | python,tkinter | 16,241,833 | 1 | false | 0 | 1 | Every created image is assigned a unique name (unless you specify the name of the image when creating). This unique name is generated by using a counter, which increases monotonically. | 1 | 1 | 0 | I have a program that displays many tkinter PhotoImages at once (relevant: I'm not using PIL). It currently has several screens, and when the play gets to the edge it loads a new tilemap, creating a bunch more photoimages in the currentTiles array after clearing the old contents. I'm fairly certain there are no other r... | Tkinter PhotoImage: References in Memory? | 0.379949 | 0 | 0 | 238 |
16,243,650 | 2013-04-26T19:15:00.000 | 3 | 0 | 0 | 0 | python,image,dialog,tkinter | 16,244,140 | 1 | true | 0 | 1 | No, there is not. You'll need to create your own message box with a Toplevel and some widgets. When you do that, you'll have complete control over what goes in the window. | 1 | 0 | 0 | Is there any way to add a custom image to the tkinter built in tkMessageBox? | Python Tkinter message box add custom image | 1.2 | 0 | 0 | 3,397 |
16,244,303 | 2013-04-26T19:59:00.000 | 1 | 0 | 0 | 0 | python,tkinter | 16,244,366 | 4 | false | 0 | 1 | No, it is not possible to show a TIF or PDF in a Tkinter window. Your main options are to show plain text, and to show images (.gif with plain Tkinter, other formats if you include PIL - the python imaging library). | 1 | 1 | 0 | I am new to TKinter and cant seem to find any examples on how to view a document in a window. What I am trying to accomplish is that when selecting a PDF or TIF it will open the file and show the first page in a window using TKinter. Is this possible? | View a document TKinter | 0.049958 | 0 | 0 | 6,715 |
16,244,894 | 2013-04-26T20:42:00.000 | 0 | 1 | 0 | 0 | python,svn,jenkins,hudson | 16,254,689 | 2 | false | 0 | 0 | Except svn info you can also use svn log -q -l 1 URL or svn ls -v --depth empty URL | 1 | 1 | 0 | We have multiple branches in SVN and use Hudson CI jobs to maintain our builds. We use SVN revision number as part of our application version number. The issue is when a Hudson job check out HEAD of a brach, it is getting HEAD number of SVN not last committed revision of that brach. I know, SVN maintains revision numbe... | Using actual branch head revision number in Hudson | 0 | 0 | 0 | 1,110 |
16,244,924 | 2013-04-26T20:44:00.000 | 3 | 0 | 0 | 0 | python,heroku | 16,245,012 | 1 | false | 1 | 0 | Heroku is for developing Web (HTTP, HTTPS) applications. You can't deploy code that uses socket to Heroku.
If you want to run your app on Heroku, the easier way is to use a web framework (Flask, CherryPy, Django...). They usually also come with useful libraries and abstractions for you to talk to your database. | 1 | 0 | 0 | I am quite new to heroku and I reached a bump in my dev...
I am trying to write a server/client kind of application...on the server side I will have a DB(I installed postgresql for python) and I was hoping I could reach the server, for now, via a python client(for test purposes) and send data/queries and perform basic ... | how to write a client/server app in heroku | 0.53705 | 1 | 0 | 569 |
16,246,066 | 2013-04-26T22:19:00.000 | 0 | 0 | 0 | 0 | python,cluster-computing,scikit-learn,hierarchical-clustering | 54,499,731 | 3 | false | 0 | 0 | Recommend to take a look at agglomerative clustering. | 1 | 24 | 1 | My objective is to cluster words based on how similar they are with respect to a corpus of text documents. I have computed Jaccard Similarity between every pair of words. In other words, I have a sparse distance matrix available with me. Can anyone point me to any clustering algorithm (and possibly its library in Pytho... | Clustering words based on Distance Matrix | 0 | 0 | 0 | 28,598 |
16,249,380 | 2013-04-27T07:10:00.000 | 2 | 0 | 0 | 0 | python,django,django-cms,slug | 16,262,956 | 1 | true | 1 | 0 | Try to delete the pages and readd the pages after it.
Start to publish from the root and then the child.
If it still failed, you can check the db table cms_titles. To fix your paths manually or post it here | 1 | 4 | 0 | I'm having an issue with slugs in child pages. Imagine I have a page called "Something" in the main tree with the slug "something", and another page named "Anything" with the slug "anything". This second page (Anything) has a child page also called "Something" with the slug "something" again, that should result in an /... | Django-cms: Can't publish 2 pages with the same slug in different levels | 1.2 | 0 | 0 | 660 |
16,252,331 | 2013-04-27T12:54:00.000 | -1 | 0 | 1 | 0 | python | 17,052,487 | 3 | false | 0 | 0 | It's a little complicated.
It comes down to cases here:
A function that merely mutates its object's state doesn't return anything (returns None). For example, given a list called L: L.sort(); L.append("joe")
Other functions create a new object or a new copy of an object, and return it without mutating the original lis... | 2 | 0 | 0 | The question is in the title...
I'm in a process of learning Python and I've heard a couple of times that function returning None is something you never should have in a real program (unless your function never returns anything). While I can't seem to find a situation when it is absolutely necessary, I wonder if it eve... | Is returning 'None' for Python function ever a good idea? | -0.066568 | 0 | 0 | 571 |
16,252,331 | 2013-04-27T12:54:00.000 | 11 | 0 | 1 | 0 | python | 16,252,358 | 3 | true | 0 | 0 | This just flat-out isn't true. For one, any function that doesn't need to return a value will return None.
Beyond that, generally, keeping your output consistent makes things easier, but do what makes sense for the function. In some cases, returning None is logical.
If something goes wrong, yes, you should throw an exc... | 2 | 0 | 0 | The question is in the title...
I'm in a process of learning Python and I've heard a couple of times that function returning None is something you never should have in a real program (unless your function never returns anything). While I can't seem to find a situation when it is absolutely necessary, I wonder if it eve... | Is returning 'None' for Python function ever a good idea? | 1.2 | 0 | 0 | 571 |
16,252,538 | 2013-04-27T13:11:00.000 | 0 | 0 | 1 | 0 | python,django,web,infinite-loop | 16,252,661 | 3 | false | 1 | 0 | Yes, your analysis is correct. The worker thread/process will keep running. Moreover, if there is no wait/sleep in the loop, it will hog the CPU. Other threads/process will get very little cpu, resulting your entire site on slow response.
Also, I don't think server will send any timeout error to client explicitly. If t... | 1 | 7 | 0 | Something that I just thought about:
Say I'm writing view code for my Django site, and I make a mistake and create an infinite loop.
Whenever someone would try to access the view, the worker assigned to the request (be it a Gevent worker or a Python thread) would stay in a loop indefinitely.
If I understand correctly, ... | What happens when you have an infinite loop in Django view code? | 0 | 0 | 0 | 2,964 |
16,256,777 | 2013-04-27T20:54:00.000 | 0 | 0 | 0 | 0 | python,sqlalchemy | 16,257,019 | 4 | false | 0 | 0 | Sessions have a private _is_clean() member which seems to return true if there is nothing to flush to the database. However, the fact that it is private may mean it's not suitable for external use. I'd stop short of personally recommending this, since any mistake here could obviously result in data loss for your users. | 1 | 18 | 0 | I have a SQLAlchemy Session object and would like to know whether it is dirty or not. The exact question what I would like to (metaphorically) ask the Session is: "If at this point I issue a commit() or a rollback(), the effect on the database is the same or not?".
The rationale is this: I want to ask the user wether h... | How to check whether SQLAlchemy session is dirty or not | 0 | 1 | 0 | 12,854 |
16,261,413 | 2013-04-28T09:20:00.000 | 5 | 0 | 0 | 1 | python,amazon-web-services,config,web-worker,amazon-elastic-beanstalk | 16,341,391 | 1 | true | 1 | 0 | fixed it, just needed to write this command instead:
command: "nohup ./workers.py > foo.out 2> foo.err < /dev/null &" | 1 | 6 | 0 | I am trying to start a background job in elastic beanstalk, the background job has an infinite loop so it never returns a response and so I receive this error:" Some instances have not responded to commands.Responses were not received from [i-ba5fb2f7]."
I am starting the background job in the elastic beanstalk .config... | Run background jobs with elastic beanstalk | 1.2 | 0 | 0 | 2,006 |
16,264,992 | 2013-04-28T16:26:00.000 | 0 | 0 | 0 | 0 | python,http,network-programming | 16,265,073 | 3 | false | 0 | 0 | You should probably switch to use the Amazon API for product queries. | 2 | 1 | 0 | I wrote a web crawler to crawl product infomation from www.amazon.com by using urllib2,but it seems that amazon limit the connection for each IP to 1.
When I start more than one thread to crawl simultaneously, it raises HTTP Error 503: Service Temporarily Unavailable.
I want to start more threads to crawl fast,so how ... | how to crawl web pages fast when the number of connection is limited | 0 | 0 | 1 | 201 |
16,264,992 | 2013-04-28T16:26:00.000 | 1 | 0 | 0 | 0 | python,http,network-programming | 16,265,020 | 3 | false | 0 | 0 | Short version: you can't, and it would be a bad idea to even try. | 2 | 1 | 0 | I wrote a web crawler to crawl product infomation from www.amazon.com by using urllib2,but it seems that amazon limit the connection for each IP to 1.
When I start more than one thread to crawl simultaneously, it raises HTTP Error 503: Service Temporarily Unavailable.
I want to start more threads to crawl fast,so how ... | how to crawl web pages fast when the number of connection is limited | 0.066568 | 0 | 1 | 201 |
16,266,979 | 2013-04-28T19:40:00.000 | 1 | 0 | 0 | 1 | google-app-engine,python-2.7,google-cloud-datastore | 16,268,751 | 1 | true | 1 | 0 | GAE's datastore just doesn't export well to SQL. There's often situations where data needs to be modeled very differently on GAE to support certain queries, ie many-to-many relationships. Denormalizing is also the right way to support some queries on GAE's datastore. Ancestor relationships are something that don't e... | 1 | 0 | 0 | I'm building a web app in GAE that needs to make use of some simple relationships between the datastore entities. Additionally, I want to do what I can from the outset to make import and exportability easier, and to reduce development time to migrate the application to another platform.
I can see two possible ways of h... | GAE: planning for exportability and relational databases | 1.2 | 1 | 0 | 48 |
16,269,215 | 2013-04-28T23:38:00.000 | 1 | 0 | 1 | 0 | python,ruby,concurrency,connection-pooling,pgpool | 16,284,439 | 2 | true | 0 | 0 | No. Unless you use non-blocking evented IO. | 2 | 2 | 0 | Is there any reason to maintain a pool with more than one connection when running a single-process, single-threaded application? | Connection Pool for a Single Threaded Application | 1.2 | 0 | 0 | 652 |
16,269,215 | 2013-04-28T23:38:00.000 | 0 | 0 | 1 | 0 | python,ruby,concurrency,connection-pooling,pgpool | 23,256,500 | 2 | false | 0 | 0 | I can think of 2 reasons to use pool:
1, if the application access to database (open, read, then close connection) frequently, like 100 times or more every second, using the pool, the connection between the pool and the real db is maintained by pool, the pooled connection is not actually close/open, then the performanc... | 2 | 2 | 0 | Is there any reason to maintain a pool with more than one connection when running a single-process, single-threaded application? | Connection Pool for a Single Threaded Application | 0 | 0 | 0 | 652 |
16,273,227 | 2013-04-29T07:22:00.000 | 1 | 0 | 0 | 0 | google-app-engine,python-2.7,base64,google-cloud-endpoints,protorpc | 16,276,321 | 1 | true | 1 | 0 | The way it finally worked was just open the file with the (open().read()) and save it in the NDB.
The response message was a BytesField just sending the string of the open().read(), without any encoding.
The console in my browser was not reading the value of the field in the answer, but it works normal in my app. | 1 | 1 | 0 | I have an endpoint that must send an image in the response.
The original image is a file in the server that I open with python (open().read()) and save it in the NDB as BlobProperty (ndb.BlobProperty()).
My protoRPC message is a BytesField.
If I go in the apis-explorer the picture comes with the correct value, but it d... | Send image as base64 via Google Endpoints | 1.2 | 0 | 1 | 406 |
16,273,351 | 2013-04-29T07:30:00.000 | 1 | 0 | 1 | 0 | c++,python,algorithm,linear-algebra | 16,273,799 | 4 | false | 0 | 0 | The first thing is to parse the string, to identify the various tokens (numbers, variables and operators), so that an expression tree can be formed by giving operator proper precedences.
Regular expressions can help, but that's not the only method (grammar parsers like boost::spirit are good too, and you can even run y... | 1 | 1 | 1 | What would be the most efficient algorithm to solve a linear equation in one variable given as a string input to a function? For example, for input string:
"x + 9 – 2 - 4 + x = – x + 5 – 1 + 3 – x"
The output should be 1.
I am considering using a stack and pushing each string token onto it as I encounter spaces in ... | Solving a linear equation in one variable | 0.049958 | 0 | 0 | 3,057 |
16,278,613 | 2013-04-29T12:26:00.000 | 0 | 0 | 0 | 0 | python,wxpython | 16,279,016 | 1 | true | 0 | 1 | I found the solution. To completely lock user ability to resize cells it is needed to use .EnableDragGridSize(False) , .DisableDragColSize() and .DisableDragRowSize() methods. | 1 | 1 | 0 | I am using wx.Grid to build spreadsheetlike input interface. I want to lock the size of the cells so the user can not change them. I have successfully disabled the drag-sizing with grid.EnableDragGridSize(False) of the grid but user can still resize the cells by using borders between column and row labels. I am probabl... | wx.Grid cell size lock | 1.2 | 1 | 0 | 426 |
16,281,823 | 2013-04-29T14:55:00.000 | 1 | 1 | 0 | 0 | php,python,mysql,linux | 16,282,538 | 1 | true | 0 | 0 | The Apache user (www-data in your case) has a somewhat restricted environment. Check where the Python MySQLdb package is installed and edit the Apache user's env (cf Apache manual and your distrib's one about this) so it has a usable Python environment with the right PYTHONPATH etc. | 1 | 0 | 0 | I am able to easily call a python script from php using system(), although there are several options. They all work fine, except they all fail. Through trial and error I have narrowed it down to it failing on
import MySQLdb
I am not too familiar with php, but I am using it in a pinch. I understand while there could be... | call python script from php that connects to MySQL | 1.2 | 1 | 0 | 322 |
16,282,141 | 2013-04-29T15:09:00.000 | 0 | 0 | 0 | 0 | python,tkinter,real-time,ttk | 16,283,361 | 2 | false | 0 | 1 | I just implemented #2 (function + .after(1, function)) by changing literally 8 lines of code in my original implementation, and it runs perfectly. So #2 wins based on simplicity and effectiveness. It runs using 3-4% of 1 core (i5-2500, 3.3 GHz)
But if my UI becomes more complex, such as by adding stripchart recording... | 2 | 0 | 0 | I have a Tkinter/ttk app that analyzes packets arriving every 10-25 ms. My present implementation uses a thread that updates 30 StringVars after every socket read, then calls update_idletasks() to update the corresponding Entry widgets. My app crashes no more than 30 minutes after starting.
Searches revealed that Tk ... | Real-time Tkinter/ttk Entry widget update: thread+queue or .after(1)? | 0 | 0 | 0 | 548 |
16,282,141 | 2013-04-29T15:09:00.000 | 0 | 0 | 0 | 0 | python,tkinter,real-time,ttk | 16,282,853 | 2 | false | 0 | 1 | My personal rule of thumb is to avoid threads unless they are strictly required. Threads add complexity. Plus, there's a large percentage of programmers who aren't particularly thread-savvy, so threads add an element of risk if this program will be used or maintained by others.
That being said, in this particular case... | 2 | 0 | 0 | I have a Tkinter/ttk app that analyzes packets arriving every 10-25 ms. My present implementation uses a thread that updates 30 StringVars after every socket read, then calls update_idletasks() to update the corresponding Entry widgets. My app crashes no more than 30 minutes after starting.
Searches revealed that Tk ... | Real-time Tkinter/ttk Entry widget update: thread+queue or .after(1)? | 0 | 0 | 0 | 548 |
16,287,662 | 2013-04-29T20:29:00.000 | 1 | 0 | 1 | 0 | python,printing,brackets | 16,287,716 | 4 | false | 0 | 0 | maybe a simple print "(" + str(var) + ")"? | 2 | 1 | 0 | i want to print "(" in python
print "(" + var + ")"
but it says:
TypeError: coercing to Unicode: need string or buffer, NoneType found
can somebody help me? that cant be too hard... -.- | How to print brackets in python | 0.049958 | 0 | 0 | 20,324 |
16,287,662 | 2013-04-29T20:29:00.000 | 1 | 0 | 1 | 0 | python,printing,brackets | 16,287,730 | 4 | false | 0 | 0 | it appears that var is None in what you provided. Everything is correct, but var does not contain a string. | 2 | 1 | 0 | i want to print "(" in python
print "(" + var + ")"
but it says:
TypeError: coercing to Unicode: need string or buffer, NoneType found
can somebody help me? that cant be too hard... -.- | How to print brackets in python | 0.049958 | 0 | 0 | 20,324 |
16,288,749 | 2013-04-29T21:43:00.000 | 1 | 0 | 1 | 0 | python,random,floating-point | 31,707,656 | 10 | false | 0 | 0 | Try
random.randint(1, 10)/100.0 | 2 | 26 | 1 | I'm trying to generate a random number between 0.1 and 1.0.
We can't use rand.randint because it returns integers.
We have also tried random.uniform(0.1,1.0), but it returns a value >= 0.1 and < 1.0, we can't use this, because our search includes also 1.0.
Does somebody else have an idea for this problem? | Generate random number between 0.1 and 1.0. Python | 0.019997 | 0 | 0 | 37,037 |
16,288,749 | 2013-04-29T21:43:00.000 | 1 | 0 | 1 | 0 | python,random,floating-point | 16,289,924 | 10 | false | 0 | 0 | The standard way would be random.random() * 0.9 + 0.1 (random.uniform() internally does just this). This will return numbers between 0.1 and 1.0 without the upper border.
But wait! 0.1 (aka ¹/₁₀) has no clear binary representation (as ⅓ in decimal)! So You won't get a true 0.1 anyway, simply because the computer can... | 2 | 26 | 1 | I'm trying to generate a random number between 0.1 and 1.0.
We can't use rand.randint because it returns integers.
We have also tried random.uniform(0.1,1.0), but it returns a value >= 0.1 and < 1.0, we can't use this, because our search includes also 1.0.
Does somebody else have an idea for this problem? | Generate random number between 0.1 and 1.0. Python | 0.019997 | 0 | 0 | 37,037 |
16,288,787 | 2013-04-29T21:45:00.000 | 0 | 1 | 0 | 0 | python | 21,212,477 | 1 | true | 0 | 0 | The solution was to go into the code, and change the following lines to: Line 118: self.track = u'' Lines 149-152: self.track = int(self._fields.get(TRACK, u'')) + 1 | 1 | 0 | 0 | I'm using the Python library HSAudioTag, and I'm trying to read the track number in my files, however, without fail, the file returns 0 as the track number, even if it's much higher. Does anybody have any idea how to fix this?
Thanks. | Python HSAudioTag for WMA files always returns 0? | 1.2 | 0 | 1 | 87 |
16,290,237 | 2013-04-30T00:09:00.000 | 1 | 0 | 1 | 0 | python,regex,neo4j,lucene | 16,290,406 | 2 | false | 1 | 0 | Can you just use OR? "Hilary Clinton" OR "Clinton, Hilary"? | 1 | 2 | 0 | Let's say I have some free form entries for names, where some are in the format "Last Name, First Name" and others are in the format "First Name Last Name" (eg "Bob MacDonald" and "MacDonald. Bob" are both present).
From what I understand, Lucene indexing does not allow for wildcards in the beginning of the sentence, s... | Lucene or Python: Select both "Hilary Clinton" and "Clinton, Hilary" name entries | 0.099668 | 1 | 0 | 194 |
16,292,220 | 2013-04-30T04:33:00.000 | 1 | 0 | 1 | 0 | django,python-2.7,python-3.x | 24,737,475 | 2 | true | 1 | 0 | The real answer here is that you should be using virtual environments, as they both solve this particular problem, and are the industry standard because they solve many problems.
Simple process:
install python-virtualenv :
$>sudo apt-get install python-virtualenv # on Ubuntu
create a virtual-env against the Python yo... | 1 | 0 | 0 | I have both python 2.7 and 3.2 installed on my computer and I wanted to install django. And when I did it automatically installed django 1.4 on python 3. Is there a way I can install it on python 2.7? | Installing django on two existing versions on python | 1.2 | 0 | 0 | 66 |
16,293,597 | 2013-04-30T06:29:00.000 | 0 | 0 | 0 | 1 | python,python-2.7,network-programming,udp,sliding-window | 16,399,916 | 2 | false | 0 | 0 | You could have a message loop continuously listening and processing received packets and putting them on a queue then read them at your leisure...
However you would need to implement you own ACKs taking into account the possibilities of lost and duplicates (if your application is concerned about them).. Which begs the ... | 1 | 0 | 0 | Let's say a source A is sending me an unknown number of messages using UDP. How can I intercept all those messages? This is the complete scenario:
Send 7 messages
Wait for their ACKs
Process ACKs
Send another batch
Repeat...
Problems: (1) I don't know how many messages arrive, some may get lost and some are repeated,... | Receive an unknown number of UDP messages | 0 | 0 | 0 | 273 |
16,294,819 | 2013-04-30T07:48:00.000 | 20 | 0 | 1 | 0 | python,pip,requirements.txt | 16,294,888 | 8 | false | 0 | 0 | You can run pip freeze to see what you have installed and compare it to your requirements.txt file.
If you want to install missing modules you can run pip install -r requirements.txt and that will install any missing modules and tell you at the end which ones were missing and installed. | 1 | 41 | 0 | I have a requirements.txt file with a list of packages that are required for my virtual environment. Is it possible to find out whether all the packages mentioned in the file are present. If some packages are missing, how to find out which are the missing packages? | Check if my Python has all required packages | 1 | 0 | 0 | 41,835 |
16,296,124 | 2013-04-30T09:07:00.000 | 2 | 0 | 1 | 0 | python | 16,297,598 | 1 | false | 0 | 0 | "Isn't the whole point of a virtual environment to hedge against API changes in modules?" You are right. But API changes in the packages added to the site-packages/dist-packages. Not the standard library.
The idea of a virtual environment is for you to set up a library of distributed packages that you want to use toget... | 1 | 2 | 0 | When I create a virtual environment with pyvenv, the virtual environment's python executable is symlinked to the system-wide installation and consequently, I can access the system-wide standard library.
Why is this?
Isn't the whole point of a virtual environment to hedge against API changes in modules?
Can't changes... | pyvenv - Why provide access to the system-wide python executable and standard library? | 0.379949 | 0 | 0 | 260 |
16,297,433 | 2013-04-30T10:15:00.000 | 4 | 0 | 1 | 0 | python,class | 16,297,958 | 1 | true | 0 | 0 | Standalone module-level functions are totally fine if their functionality is related to that of the module. Just take a look at the Python standard library modules, they usually contain both functions and classes for a given topic. | 1 | 1 | 0 | By 'stand-alone' I mean functions not inside a class (I'm not sure of the correct terminology - 'module-level'?)
I have ~7 functions in a file that already has a few classes.These functions deal with processing input from the command line, reading and writing to files, checking whether file paths are valid - that kind ... | Stand-alone, yet closely related functions at module level | 1.2 | 0 | 0 | 104 |
16,298,022 | 2013-04-30T10:47:00.000 | 2 | 1 | 0 | 0 | python,testing,ssh,telnet,robotframework | 16,315,259 | 3 | false | 0 | 0 | We haven't exactly used the method with telnet but with another ssh session or other shells that we cannot access otherwise...
Open an ssh connection to the first machine.
On this connection, use SSHLibrary keywords like Set Prompt, Write and Read or Read Until Prompt to manually open a telnet connection to the next m... | 1 | 4 | 0 | There is a node where I ssh into and start a script remotely by Robot Framework (SSHLibrary.Start Command or Execute Command). This remote script starts a telnet connection to another node which is hidden from outside. This telnet call seems to be a blocking event to Robot. I use RIDE for test execution and it simply s... | Is there a way to use telnet within an ssh connection in Robot Framework? | 0.132549 | 0 | 1 | 2,735 |
16,304,959 | 2013-04-30T16:42:00.000 | 1 | 0 | 0 | 0 | python,nosql | 16,306,049 | 1 | true | 0 | 0 | If search is your primary use case, I'd look into a search solution like ElasticSearch or Solr. Even if some databases support some sort of full text indexing, they're not optimized for this problem. | 1 | 0 | 0 | There are two possible cases where I am finding MySQL and RDBMS too slow. I need a recommendation for a better alternative in terms of NOSQL.
1) I have an application that's saving tons of emails for later analysis. Email content is saved in a simple table with a couple of relations to another two tables. Columns are s... | Possible NoSQL cases | 1.2 | 1 | 0 | 56 |
16,307,347 | 2013-04-30T19:16:00.000 | 1 | 0 | 0 | 0 | python,postgresql,constraints,openerp | 16,336,050 | 1 | true | 1 | 0 | You can do this with a module by loading the data through xml or csv. Have a look at any module with a security\ir.model.access.csv file.
So to load data, create new module and add a csv file with the name of the table you want to load into (eg ir.model.data.csv) and add it to the __openerp__.py file under 'update_xml... | 1 | 1 | 0 | I need a way to add, some external ID's in the system without having to add them manually or by .csv
Is there any way to do this by a module, that maybe updates all the ir.model.data tables of the db?
If so, what module should i look for? Is there any in existence, so i can make a new one based on it?
Thanks in advance | OpenErp - External Id Bulk Update | 1.2 | 0 | 0 | 143 |
16,307,421 | 2013-04-30T19:20:00.000 | 0 | 0 | 1 | 0 | python,wxpython | 16,307,892 | 1 | false | 0 | 1 | Is the Windows 7 box you're using to create the installer 64-bit? Is the Python version you were using on Windows 7 64-bit? If so, then you'll need to create the exe using a 32-bit Python, 32-bit wxPython and 32-bit installer.
A 64-bit program will run just fine on a 64-bit system, but it won't work on a 32-bit one. H... | 1 | 0 | 0 | I programmed a simple, little game with wxpython and created an .exe of it with py2exe (and in a 2nd try with pyinstaller). I also programmed an installer which just creates a folder and copies all the game files into this folder. I also created an .exe for this installer. Everything works fine on Windows 7. But on Win... | py2exe/pyinstaller: execution failure | 0 | 0 | 0 | 1,262 |
16,317,420 | 2013-05-01T11:37:00.000 | -1 | 0 | 0 | 0 | python,math | 16,319,018 | 3 | false | 0 | 0 | The simple answer is: pick a random number from geometric distribution and return mod n.
Eg: random.geometric(p)%n
P(x) = p(1-p)^x+ p(1-p)^(x+n) + p(1-p)^(x+2n) ....
= p(1-p)^x *(1+(1-p)^n +(1-p)^(2n) ... )
Note that second part is a constant for a given p and n. The first part is geometric. | 1 | 2 | 1 | What is a good way to sample integers in the range {0,...,n-1} according to (a discrete version of) the exponential distribution? random.expovariate(lambd) returns a real number from 0 to positive infinity.
Update. Changed title to make it more accurate. | Sample integers from truncated geometric distribution | -0.066568 | 0 | 0 | 2,007 |
16,317,886 | 2013-05-01T12:13:00.000 | 1 | 0 | 0 | 0 | python,web-applications,deployment,web-deployment | 16,318,079 | 1 | true | 1 | 0 | The app will be modified in that way, that one instance may serve for
more customers. Based on requested domain, it will prepare (load) the
right settings, database connection etc. for that customer.
Is this good idea?
Well, I've used a similar system in production whereby there are n instances of the app, but eac... | 1 | 0 | 0 | I have python web app (WSGi) which is deployed using uwsgi and nginx. I am going to provide this app to many users (customers) - each user will have his own settgins, database, templates, data folder etc. The code of the app can be shared.
My original idea was to have one uwsgi process per customer. But it is quite was... | Python web app deployment of multiple app instances | 1.2 | 0 | 0 | 289 |
16,320,412 | 2013-05-01T14:49:00.000 | 0 | 0 | 0 | 0 | python,random | 16,320,580 | 3 | false | 0 | 0 | You can use some mapping to convert strings to numeric and then apply standard tests like Diehard and TestU01. Note that long sequences of samples are needed (typically few MB files will do) | 2 | 10 | 1 | I've come up with 2 methods to generate relatively short random strings- one is much faster and simpler and the other much slower but I think more random. Is there a not-super-complicated method or way to measure how random the data from each method might be?
I've tried compressing the output strings (via zlib) figuri... | Quantifying randomness | 0 | 0 | 0 | 740 |
16,320,412 | 2013-05-01T14:49:00.000 | 0 | 0 | 0 | 0 | python,random | 16,328,721 | 3 | false | 0 | 0 | An outcome is considered random if it can't be predicted ahead of time with certainty. If it can be predicted with certainty it is considered deterministic. This is a binary categorization, outcomes either are deterministic or random, there aren't degrees of randomness. There are, however, degrees of predictability. ... | 2 | 10 | 1 | I've come up with 2 methods to generate relatively short random strings- one is much faster and simpler and the other much slower but I think more random. Is there a not-super-complicated method or way to measure how random the data from each method might be?
I've tried compressing the output strings (via zlib) figuri... | Quantifying randomness | 0 | 0 | 0 | 740 |
16,320,603 | 2013-05-01T14:59:00.000 | 3 | 0 | 0 | 0 | python,flask,coding-style,standards,project-structure | 16,321,335 | 3 | false | 1 | 0 | There is no right or wrong answer to this. One file may be easy to manage if it is a very small project and you probably are the only one working on it. Some of the reasons you split the project into multiple source files however are:
You only change and commit what requires change. What I mean here is if you have a l... | 2 | 12 | 0 | I'm currently writing a web application in Python using the Flask web framework. I'm really getting used to just putting everything in the one file, unlike many other projects I see where they have different directories for classes, views, and stuff. However, the Flask example just stuff everything into the one file, w... | Is it bad practice to write a whole Flask application in one file? | 0.197375 | 0 | 0 | 3,546 |
16,320,603 | 2013-05-01T14:59:00.000 | -2 | 0 | 0 | 0 | python,flask,coding-style,standards,project-structure | 16,326,032 | 3 | false | 1 | 0 | As it is a micro framework, you should not rely on it to build full blown applications since it's not designed for it.
As long a you keep your project small (a few forms, a few tables and mostlys static contents) you will be fine. But if you want to have a bigger application, you might "out program" the capacities of ... | 2 | 12 | 0 | I'm currently writing a web application in Python using the Flask web framework. I'm really getting used to just putting everything in the one file, unlike many other projects I see where they have different directories for classes, views, and stuff. However, the Flask example just stuff everything into the one file, w... | Is it bad practice to write a whole Flask application in one file? | -0.132549 | 0 | 0 | 3,546 |
16,326,699 | 2013-05-01T21:18:00.000 | 1 | 0 | 0 | 0 | python,numpy,machine-learning,scipy,scikit-learn | 16,332,805 | 2 | false | 0 | 0 | Some linear model (Regression, SGD, Bayes) will probably be your best bet if you need to train your model frequently.
Although before you go running any models you could try the following
1) Feature reduction. Are there features in your data that could easily be removed? For example if your data is text or ratings ba... | 1 | 6 | 1 | I have a csv file of [66k, 56k] size (rows, columns). Its a sparse matrix. I know that numpy can handle that size a matrix. I would like to know based on everyone's experience, how many features scikit-learn algorithms can handle comfortably? | How many features can scikit-learn handle? | 0.099668 | 0 | 0 | 2,840 |
16,328,801 | 2013-05-02T01:03:00.000 | 1 | 0 | 0 | 0 | python,selenium,selenium-chromedriver | 17,212,203 | 3 | false | 0 | 0 | I have faced recently the same issue. Tried a lot of solutions found in the Internet, no one helped. So finally I came to this:
Launch chrome with empty user-data-dir (in /tmp folder) to let chrome initialize it
Quit chrome
Modify Default/Preferences in newly created user-data-dir, add those fields to the root object ... | 1 | 8 | 0 | Everything is in the title!
Is there a way to define the download directory for selenium-chromedriver used with python?
In spite of many research, I haven't found something conclusive...
As a newbie, I've seen many things about "the desired_capabilities" or "the options" for Chromedriver but nothing has resolved my pro... | Define download directory for chromedriver selenium with python | 0.066568 | 0 | 1 | 9,773 |
16,334,482 | 2013-05-02T09:23:00.000 | -1 | 1 | 1 | 0 | python,encryption,passwords | 16,334,819 | 4 | false | 0 | 0 | You could use htpasswd which is installed with apache or can be downloaded seperately. Use subprocess.check_output to run it and you can create Python functions to add users, remove them, verify they have given the correct password etc. Pass the -B option to enable salting and you will know that it's secure (unlike if ... | 1 | 6 | 0 | I have a small python program which will be used locally by a small group of people (<15 people).But for accountability, i want to have a simple username+password check at the start of the program ( doesn't need to be super secure).For your information, I am just a beginner and this is my first time trying it.When i se... | Password Protection Python | -0.049958 | 0 | 0 | 6,052 |
16,335,771 | 2013-05-02T10:29:00.000 | 18 | 0 | 1 | 0 | python | 16,335,832 | 5 | true | 0 | 0 | Python's "not" operand is not, not !.
Python's "logical not" operand is not, not !. | 2 | 6 | 0 | For the sake of learning, is there a shorter way to do:
if string.isdigit() == False :
I tried:
if !string.isdigit() : and if !(string.isdigit()) : which both didn't work. | Shorter way to check if a string is not isdigit() | 1.2 | 0 | 0 | 60,969 |
16,335,771 | 2013-05-02T10:29:00.000 | 4 | 0 | 1 | 0 | python | 61,558,997 | 5 | false | 0 | 0 | maybe using .isalpha() is an easier way...
so; instead of if not my_str.isdigit() you can try if my_str.isalpha()
it is the shorter way to check if a string is not digit | 2 | 6 | 0 | For the sake of learning, is there a shorter way to do:
if string.isdigit() == False :
I tried:
if !string.isdigit() : and if !(string.isdigit()) : which both didn't work. | Shorter way to check if a string is not isdigit() | 0.158649 | 0 | 0 | 60,969 |
16,336,919 | 2013-05-02T11:28:00.000 | 2 | 1 | 0 | 1 | python,bash,fabric | 16,337,848 | 1 | true | 0 | 0 | ctrl+c generates a SIGINT signal.
You can send a signal with kill -SIGINT pid where pid is the process id. you wish to signal. kill is a Bash built-in. | 1 | 2 | 0 | How do I fire a Ctrl+C with fabric, in other words is it possible to trigger KeyboardInterrupt manually via bash? | Simulate KeyboardInterrupt with fabric | 1.2 | 0 | 0 | 414 |
16,340,305 | 2013-05-02T14:09:00.000 | 0 | 0 | 1 | 0 | python,python-2.7 | 16,340,366 | 2 | false | 0 | 0 | If list() is given another list then it creates a list using the given list's members (A copy) | 2 | 0 | 0 | Say we have x = [2,4,5]. If I do y = list(x), I get back [2,4,5] and similarly true for tuples. This is a bit surprising to me, I could have expected [[2,4,5]] in the former case. What would have been the motivation for not giving back a list of a list? | Design of Python curiosity, why so? | 0 | 0 | 0 | 68 |
16,340,305 | 2013-05-02T14:09:00.000 | 9 | 0 | 1 | 0 | python,python-2.7 | 16,340,373 | 2 | true | 0 | 0 | The list builtin type takes an arbitrary iterable (regardless of type) and creates a new list out of it. Since a list instance is iterable, it can be used to construct a new list by iteration.
If you expect list([1,2,3]) to give [[1,2,3]], why wouldn't you expect list((1,2,3)) to return [(1,2,3)] or list(x for x in ... | 2 | 0 | 0 | Say we have x = [2,4,5]. If I do y = list(x), I get back [2,4,5] and similarly true for tuples. This is a bit surprising to me, I could have expected [[2,4,5]] in the former case. What would have been the motivation for not giving back a list of a list? | Design of Python curiosity, why so? | 1.2 | 0 | 0 | 68 |
16,341,001 | 2013-05-02T14:42:00.000 | 0 | 0 | 0 | 0 | python,macos | 16,342,227 | 2 | false | 1 | 0 | So I figured out what the problem was.
The website is returning an erroneous response code for these 6 pages. Even though it's returning a 404, it's also returning the web page. Chrome and Safari seem to ignore the response code and display the page anyways, my script aborts on the 404. | 1 | 0 | 0 | I have a python script that pings 12 pages on someExampleSite.com every 3 minutes. It's been working for a couple months but today I started receiving 404 errors for 6 of the pages every time it runs.
So I tried going to those urls on the pc that the script is running on and they load fine in Chrome and Safari. I've a... | Troubleshooting 404 received by python script | 0 | 0 | 1 | 52 |
16,343,985 | 2013-05-02T17:17:00.000 | 0 | 0 | 0 | 1 | python,perl,awk,biopython,bioperl | 16,360,951 | 2 | false | 0 | 0 | I think you should consider using an alignment tool designed for this data for a couple of reasons:
Those tools will also find reverse complemented matches (though, you could also implement this).
Aligners will properly handle paired-end reads and multiple matches.
Most aligners are written in C and use data structure... | 1 | 1 | 0 | i have a fastq file with more than 100 million reads in it and a genome sequence of 10000 in length
i want to take out the sequences from the fastq file and search in the genome sequence with allowing 3 mismatches
I tried in this way using awk i got the sequences from fastq file:
1.fq(few lines)
@DH1DQQN1:269:C1UKCACX... | search sequence in genome with mismatches | 0 | 0 | 0 | 979 |
16,344,677 | 2013-05-02T17:59:00.000 | 0 | 1 | 1 | 0 | c++,python,string,hash,dictionary | 16,344,775 | 1 | false | 0 | 0 | If you tokenize string you should be carefull not to have to different strings with same token. The std::unordered_map will also use hashes for quick search but also will take care of string with same hash but with different values. Of course it will take some time.
If you can tokenize the strings in such way that two ... | 1 | 0 | 0 | I have a question about using a hash which has strings as keys. Let's say I have a hash which maps strings to doubles.
The questions is, I've heard some say that it is better to tokenize the strings into ints and have the hash map ints to doubles and not string to doubles? Will this generally be faster in Python or C++... | tokenizing strings to int for faster hash maps | 0 | 0 | 0 | 136 |
16,347,535 | 2013-05-02T20:53:00.000 | 4 | 0 | 1 | 0 | python,pygame | 16,347,585 | 1 | false | 0 | 1 | Your problem is that your script (or something else it imports) is already named pygame. So, Python can't find the package with the same name.
Just rename your script to something else, like my_game.py. | 1 | 0 | 0 | I need help in pygame for 3.1 i am watching The New Bostons tutorials and whenever I put in
import pygame
from pygame.locals import *
I receive
Traceback (most recent call last):
File "C:\Documents and Settings\Aidan\Desktop\pygame.py", line 8, in
import pygame
File "C:\Documents and Settings\Aidan\Desktop\pyg... | Pygame python 3.1 | 0.664037 | 0 | 0 | 156 |
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