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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33,064,424 | 2015-10-11T11:25:00.000 | 10 | 0 | 1 | 0 | python-idle,python-3.5 | 50,818,666 | 4 | false | 0 | 0 | Following are the steps:
Open IDLE
Go to "OPTIONS" in the top tab
Select "Configure IDLE"
Select "Highlights" from top horizontal tab
Select "Background" radio button just above the image of IDLE on the left hand side
On the right hand side under "Highlight Theme" click on "IDLE Classic/IDLE Dark/IDLE New" as p... | 2 | 7 | 0 | Is there a way to change background color of python-3.5 IDLE under windows 10?
I've tried google and reading docs, but i can't find the answer. I'm not sure it's even possible... | IDLE background color in python | 1 | 0 | 0 | 92,777 |
33,064,424 | 2015-10-11T11:25:00.000 | 0 | 0 | 1 | 0 | python-idle,python-3.5 | 68,920,836 | 4 | false | 0 | 0 | FOR IDLE DARK BACKGROUND
The above answer of Daniel Puiu and Megha Chovatiya is so good. I follow their instruction and have extra personal experience that I also want to share:
This instruction will be detailed that can apply for custom version:
Open IDLE
Go to "OPTIONS" in the top tab
Select "Configure IDLE"
Select ... | 2 | 7 | 0 | Is there a way to change background color of python-3.5 IDLE under windows 10?
I've tried google and reading docs, but i can't find the answer. I'm not sure it's even possible... | IDLE background color in python | 0 | 0 | 0 | 92,777 |
33,068,445 | 2015-10-11T18:15:00.000 | 0 | 1 | 1 | 0 | python,windows,atom-editor | 43,814,862 | 3 | false | 0 | 0 | From Atom > Preferences > Install:
Search for atom-runner package and install it.
Close the atom editor and reopen. This helps the atom editor set the right path and will solve the issue.
If this doesnt help, manually copy the folder of the python installation directory and add the path to system PATH. This will solve ... | 1 | 3 | 0 | I have read numerous articles about running code in the Atom code editor, however, I cannot seem to understand how this can be done. Could anyone explain it in simpler terms?
I want to run my Python code in it and I have downloaded the 'python-tools-0.6.5' and 'atom-script-2.29.0' files from the Atom website and I jus... | Run Code In Atom Code Editor | 0 | 0 | 0 | 17,470 |
33,072,570 | 2015-10-12T02:53:00.000 | 4 | 0 | 1 | 0 | python,oop | 33,072,852 | 6 | false | 0 | 0 | A class defines a real world entity. If you are working on something that exists individually and has its own logic that is separate from others, you should create a class for it. For example, a class that encapsulates database connectivity.
If this not the case, no need to create class | 3 | 295 | 0 | I have been programming in python for about two years; mostly data stuff (pandas, mpl, numpy), but also automation scripts and small web apps. I'm trying to become a better programmer and increase my python knowledge and one of the things that bothers me is that I have never used a class (outside of copying random fla... | When should I be using classes in Python? | 0.132549 | 0 | 0 | 140,866 |
33,072,570 | 2015-10-12T02:53:00.000 | 1 | 0 | 1 | 0 | python,oop | 52,722,066 | 6 | false | 0 | 0 | It depends on your idea and design. If you are a good designer, then OOPs will come out naturally in the form of various design patterns.
For simple script-level processing, OOPs can be overhead.
Simply consider the basic benefits of OOPs like reusability and extendability and make sure if they are needed or not.
OOPs ... | 3 | 295 | 0 | I have been programming in python for about two years; mostly data stuff (pandas, mpl, numpy), but also automation scripts and small web apps. I'm trying to become a better programmer and increase my python knowledge and one of the things that bothers me is that I have never used a class (outside of copying random fla... | When should I be using classes in Python? | 0.033321 | 0 | 0 | 140,866 |
33,072,570 | 2015-10-12T02:53:00.000 | 30 | 0 | 1 | 0 | python,oop | 33,073,271 | 6 | false | 0 | 0 | Whenever you need to maintain a state of your functions and it cannot be accomplished with generators (functions which yield rather than return). Generators maintain their own state.
If you want to override any of the standard operators, you need a class.
Whenever you have a use for a Visitor pattern, you'll need clas... | 3 | 295 | 0 | I have been programming in python for about two years; mostly data stuff (pandas, mpl, numpy), but also automation scripts and small web apps. I'm trying to become a better programmer and increase my python knowledge and one of the things that bothers me is that I have never used a class (outside of copying random fla... | When should I be using classes in Python? | 1 | 0 | 0 | 140,866 |
33,072,577 | 2015-10-12T02:54:00.000 | 0 | 0 | 0 | 0 | python,django | 33,072,629 | 2 | false | 1 | 0 | It depends what are your queries, Your single query to the database will never face any race condition due to ACID principle impose by the database. But if there is any condition like first you are reading the data from database and after some operation on application level you are writing the updated data back to the ... | 1 | 2 | 0 | Is there any simple way to define critical section?
when a user during the updating some database table, I'd force to make the other user cannot update on the same tables. | How to define critical section in django | 0 | 0 | 0 | 341 |
33,075,289 | 2015-10-12T07:17:00.000 | 0 | 0 | 0 | 1 | python,ipc,zeromq,pyzmq | 33,075,923 | 1 | false | 0 | 0 | put some sleep before connecting. so bind will run first, and connect will continue after waiting for sometime | 1 | 0 | 0 | Trying to establish some communication between two python processes , I've come to use pyzmq. Since the communication is simple enough I 'm using the Zmq.PAIR messaging pattern with a tcp socket. Basically one process binds on an address and the other one connects to the same address . However both operations happen at... | PyZmq ensure connect() after bind() | 0 | 0 | 0 | 129 |
33,078,383 | 2015-10-12T10:02:00.000 | 0 | 0 | 0 | 0 | python,sqlite,cookies | 33,078,468 | 1 | true | 0 | 0 | That's not a programming question as is -- sqlite sets a flag in the file so that when trying to open the file a second time, the other sqlite instance knows that the file is "dirty", because the first Sqlite is actively modifying it. There's no way around this -- data integrity is the core functionality of databases, ... | 1 | 0 | 0 | I tried to open and read the contents of cookie.sqlite file in the firefox.
cookie.sqlie is the database file were all cookies of webpages opened in firefox are stored. When I am trying to access with a python program it is not allowing to read, as cookie.sqlite is locked. How to open and read the contents. | how to read cookie.sqlite file in firefox through python program | 1.2 | 1 | 0 | 858 |
33,080,063 | 2015-10-12T11:32:00.000 | -3 | 1 | 0 | 0 | javascript,python,ios,swift,encryption | 33,080,475 | 3 | false | 1 | 0 | It's very wide question and the variety of ways to do that.
First of all, you need to choose a method of the encryption and purpose why you encrypt the data.
There are 3 main encryption methods:
1. Symmetric Encryption
Encrypter and Decrypter have access to the same key. It's quite easy, but it has one big drawback ... | 1 | 0 | 0 | I have a very simple iOS and Android applications that download a txt file from a web server and preset it to the user. I'm looking for a way that only the application will be able to read the file so no one else can download and use it.
I would like to take the file that is on my computer, encrypt it somehow, upload t... | encrypting data on server and decrypting it on client | -0.197375 | 0 | 0 | 1,327 |
33,080,794 | 2015-10-12T12:10:00.000 | 0 | 0 | 1 | 0 | python,csv,python-3.x | 40,980,117 | 3 | false | 0 | 0 | First of all, at the top of the code do import csv
After that you need to set a variable name; this is so you can open the CSV file. For example, data=open('CSV name', 'rt') You will need to fill in where it says CSV name. That's how you open it.
To read a CSV file, you set another variable. For example, data2=csv.rea... | 1 | 0 | 1 | I want to import CSV files in a python script. Column and row numbers are not fixed , first row contains name of the variables and next rows are values of those variables.
I am new to Python, any help is appreciated. thanks. | importing csv file in python | 0 | 0 | 0 | 4,532 |
33,082,220 | 2015-10-12T13:19:00.000 | 0 | 0 | 0 | 0 | python,opencv | 33,101,046 | 1 | false | 0 | 0 | Install Drivers for required camera, connect it, and use cv2.VideoCapture(int). Here, instead of 0, use a different integer according to the camera. By default, 0 is for the inbuilt webcam.
e.g.: cv2.VideoCapture(1) | 1 | 0 | 1 | The quality of video recording that is required for our project is not met by the webcams. Is it possible to use high megapixel digital cameras (Sony, Canon, Olympus) with OpenCV ?
How to talk to the digital cameras using OpenCV (and specifically using Python) | OpenCV - using digital cameras. | 0 | 0 | 0 | 1,805 |
33,086,758 | 2015-10-12T17:16:00.000 | 3 | 0 | 0 | 0 | python,pandas | 33,087,239 | 1 | true | 0 | 0 | Try changing pandas.options.display.width. (It's 80 by default) | 1 | 3 | 1 | I want to print a Dataframe to a text file,
Say I have a table with 4 lines, and 12 columns.
It looks quite nice when I just use print df, with all the values of a column aligned to the right, however, when there are too many columns (8 in my case) it breaks the table down so that the last 4 columns are printed after 4... | print a pandas dataframe to text with lines longer than 80 chars | 1.2 | 0 | 0 | 259 |
33,087,364 | 2015-10-12T17:57:00.000 | 1 | 0 | 1 | 0 | python,apache-storm | 33,163,891 | 1 | true | 0 | 0 | Hmmm... Your question is kind of genetic and hard to answer. I personally would just go with Storm because:
It keeps the code simpler.
Installing Storm is not too hard.
For non parallel execution you might be able to use Storm LocalCluster which execute Storm programs on a single JVM and thus does not require to setup... | 1 | 1 | 0 | I'm creating an application and would like it to be scalable using Storm. The problem is, most users will actually run it in a single node.
I don't think it's fair for those users to have to install Storm in a single node just to use the application. Is there a way to make the application only require Storm if the user... | Storm alternative for deploying single node | 1.2 | 0 | 0 | 99 |
33,087,881 | 2015-10-12T18:31:00.000 | 0 | 0 | 1 | 0 | python,sympy | 33,223,272 | 2 | false | 0 | 0 | Just multiply the equations together. The product of two expressions is zero if one or the other is zero.
In SymPy, solve(expr, x) assumes that expr = 0 (for instance, solve(x**2 - 1, x) gives [-1, 1]).
If you want to solve, for instance, x**2 - 1 = 0 OR x**2 - 4 = 0, you should use solve((x**2 - 1)*(x**2 - 4), x). | 1 | 1 | 0 | Suppose I had a system of equations as follows but I have the requirement that within my system of equations I need 1 of 2 statements to be true.
Example:
sympy.solve([eq1 or eq2, eq3 or eq4, eq5 or eq6,...], [vars])
When I put the or statements, it doesn't work as I intended it to work (the first eq is always evaluate... | Sympy python OR statements in solve() function | 0 | 0 | 0 | 81 |
33,088,102 | 2015-10-12T18:44:00.000 | 2 | 1 | 0 | 0 | python,c++,scripting,embedded-language | 33,088,189 | 2 | false | 0 | 1 | Why would someone need/want to embed a scripting language into a programming language?
The main reason obviously is to allow to provide extensions to the game engine without need to recompile the entire game executable program, but have the extensions loaded and interpreted at run time.
Many game engines provide such ... | 1 | 2 | 0 | I'm interesting in making games in my future, and I've heard that my favourite game's engine is made with c++, but its embedded with python. I have little experience with programming, but I greatly understand how object orientation works. | What is the purpose of embedding a scripting language into a programming language in a game engine? | 0.197375 | 0 | 0 | 159 |
33,088,597 | 2015-10-12T19:16:00.000 | 0 | 0 | 0 | 0 | python,events,triggers,tkinter,keypress | 33,089,284 | 2 | false | 0 | 1 | There may be nothing you can do. It could very well be that the keyboard itself is sending multiple events (ie: it's a hardware problem that can't be solved with software).
These events are probably coming very close together -- maybe every 100ms or so. You can use that knowledge to affect how you process events. For e... | 1 | 0 | 0 | What do I have to do so that the function that I bind with the <KeyPress> event only triggers once, even when I hold the key? | Python: Tkinter Keypress Event Trigger once: Hold vs. Pressed | 0 | 0 | 0 | 836 |
33,089,288 | 2015-10-12T20:02:00.000 | 0 | 0 | 1 | 0 | ipython-notebook | 33,089,553 | 2 | false | 0 | 0 | The three tabs "Files", "Running" and "Clusters" should be correct. The "Running" tab has the active notebooks listed.
Yes, perhaps it was an older tutorial. Do you have a link? | 2 | 0 | 0 | I have installed iPython Notebook as a component of my Anaconda installation. To become familiar with using iPython Notebook I started through an introductory tutorial and immediately ran into a discrepancy. When I open the notebook the tutorial shows I should have three tabs across the top labelled 'Notebooks', 'Run... | Missing 'Notebooks' tab | 0 | 0 | 0 | 135 |
33,089,288 | 2015-10-12T20:02:00.000 | 0 | 0 | 1 | 0 | ipython-notebook | 39,973,387 | 2 | false | 0 | 0 | To start the notebook in notebook server 4.2.1, go to file tab and on the top right side, you will see new drop down menu. Click on the python[root] and it should start the new notebook. | 2 | 0 | 0 | I have installed iPython Notebook as a component of my Anaconda installation. To become familiar with using iPython Notebook I started through an introductory tutorial and immediately ran into a discrepancy. When I open the notebook the tutorial shows I should have three tabs across the top labelled 'Notebooks', 'Run... | Missing 'Notebooks' tab | 0 | 0 | 0 | 135 |
33,091,980 | 2015-10-12T23:52:00.000 | 2 | 0 | 1 | 0 | python,csv | 67,879,731 | 3 | false | 0 | 0 | The technical difference is that writerow is going to write a list of values into a single row whereas writerows is going to write multiple rows from a buffer that contains one or more lists.
The practical difference is that writerows is going to be faster, especially if you have a large number of writes to perform, be... | 1 | 16 | 0 | I am new to the realm of Python. I've been playing with some I/O operations on CSV files lately, and I found two methods in the csv module with very similar names - writerow() and writerows(). The difference wasn't very clear to me from the documentation. I tried searching for some examples but they seem to have used t... | Difference between writerow() and writerows() methods of Python csv module | 0.132549 | 0 | 0 | 48,810 |
33,092,424 | 2015-10-13T00:46:00.000 | 0 | 0 | 0 | 1 | python,libreoffice | 33,251,685 | 3 | true | 1 | 0 | Finally, I found a way to solve this using Python, in an elegant and easy way. Instead of libraries or APIs, Im using a socket to connect to Impress and control it.
At the end of the post you can read the full-text that indicates how to control Impress this way. It is easy, and amazing.
You send a message using Python ... | 1 | 1 | 0 | Im writing an application oriented to speakers and conferences. Im writing it with Python and focused on Linux.
I would like to know if its possible to control LibreOffice Impress with Python, under Linux in some way.
I want to start an instance of LibreOffice Impress with some .odp file loaded, from my Python app. The... | Control Libreoffice Impress from Python | 1.2 | 0 | 0 | 3,178 |
33,092,493 | 2015-10-13T00:55:00.000 | 6 | 0 | 0 | 0 | python,matplotlib,machine-learning,visualization,pca | 33,094,494 | 2 | false | 0 | 0 | Don't confuse PCA with dimensionality reduction.
PCA is a rotation transformation that aligns the data with the axes in such a way that the first dimension has maximum variance, the second maximum variance among the remainder, etc. Rotations preserve pairwise distances.
When you use PCA for dimensionality reduction, yo... | 2 | 3 | 1 | I am currently reading up on t-SNE visualization technique and it was mentioned that one of the drawback of using PCA for visualizing high dimension data is that it only preserves large pairwise distances between the points. Meaning points which are far apart in high dimension would also appear far apart in low dimens... | What is meant by PCA preserving only large pairwise distances? | 1 | 0 | 0 | 1,245 |
33,092,493 | 2015-10-13T00:55:00.000 | 0 | 0 | 0 | 0 | python,matplotlib,machine-learning,visualization,pca | 66,142,281 | 2 | false | 0 | 0 | If I can re-phrase @Don Reba's comment:
The PCA transformation itself does not alter distances.
The 2-dimensional plot often used to visualise the PCA results takes into account only two dimensions, disregards all the other dimensions, and as such this visualisation provides a distorted representation of distances. | 2 | 3 | 1 | I am currently reading up on t-SNE visualization technique and it was mentioned that one of the drawback of using PCA for visualizing high dimension data is that it only preserves large pairwise distances between the points. Meaning points which are far apart in high dimension would also appear far apart in low dimens... | What is meant by PCA preserving only large pairwise distances? | 0 | 0 | 0 | 1,245 |
33,093,371 | 2015-10-13T02:57:00.000 | 1 | 0 | 1 | 0 | python-2.7 | 33,093,420 | 2 | true | 0 | 0 | I would like to know whether there is a way to open a file in python
by entering only its name
You can open a file without providing the path, as long as the file is located on the same dir as the python script. | 1 | 0 | 0 | I know that this question may be silly, and I am OK with that since I am at a rookie level.
I would like to know whether there is a way to open a file in python by entering only its name , e.g open(mbox.txt) instead of open(C:\Python27\mbox.txt)??
Thanks | How to open a file from python with the name only? | 1.2 | 0 | 0 | 106 |
33,095,441 | 2015-10-13T06:18:00.000 | 3 | 0 | 0 | 0 | python,hex | 33,096,117 | 3 | true | 0 | 0 | I try to use like this : "{0:03x}".format(number) and works | 2 | 0 | 0 | I want make my hex number have 2 bytes size. How I can do it? Example,if in C we can make %02f. How I make it in Python2.7?
Thankyou | Make Fix Size of Hex Number Python | 1.2 | 0 | 0 | 1,870 |
33,095,441 | 2015-10-13T06:18:00.000 | 1 | 0 | 0 | 0 | python,hex | 33,095,970 | 3 | false | 0 | 0 | You can format it in a similar way. Just use "%02x" % (the_number,) | 2 | 0 | 0 | I want make my hex number have 2 bytes size. How I can do it? Example,if in C we can make %02f. How I make it in Python2.7?
Thankyou | Make Fix Size of Hex Number Python | 0.066568 | 0 | 0 | 1,870 |
33,101,603 | 2015-10-13T11:33:00.000 | 3 | 0 | 0 | 1 | python,docker,uwsgi,wake-on-lan | 67,018,294 | 1 | false | 0 | 0 | It seems that UDP broadcast from docker isn't being routed properly (possibly only broadcasted in the container itself, not on the host).
You can't send UDP WoL messages directly, as the device you're trying to control is 'offline' it doesn't show up in your router's ARP table and thus the direct message can't be deliv... | 1 | 12 | 0 | I have a docker container running a python uwsgi app. The app sends a wake on lan broadcast packet to wake a pc in the local network.
It works fine without the use of docker (normal uwsgi app directly on the server), but with docker it won't work.
I exposed port 9/udp and bound it port 9 of the host system.
What am I m... | Send a wake on lan packet from a docker container | 0.53705 | 0 | 0 | 5,187 |
33,103,572 | 2015-10-13T13:09:00.000 | 0 | 0 | 1 | 0 | qpython | 33,681,879 | 1 | false | 0 | 0 | I think it tries to install the Mac version***, which is obviously not compatible. At least, that's what it looked like when scrolling through the CLI output when issuing the pip install numpy command using the pip script.
I don't think the numpy/scipy modules are available for Qpython for Android. I think we're ju... | 1 | 0 | 0 | In Qpython which uses Python 2.7.2; I can't install the numpy module. The message I get is: command python setup.py egg_info failed with error code 2 | Installation error numpy in Qpython | 0 | 0 | 0 | 1,056 |
33,105,395 | 2015-10-13T14:32:00.000 | -1 | 0 | 1 | 0 | python,virtualenv,setup.py | 33,107,397 | 1 | false | 0 | 0 | setup.py should not touch the global system-wide config.
If you need to place configuration files around the operating system files, please create a separate installation script, preferably using OS tools, and then ask the package users to run this script after completing setup.py installation.
E.g. on Ubuntu you would... | 1 | 2 | 0 | I have a bunch of conf file and I am running python setup.py install after initializing virtual environment. I want to install them on the machine's OS's /opt or /etc so they are available to all applications.
How do i do this ? | python setup.py install outside virtualenv | -0.197375 | 0 | 0 | 277 |
33,107,955 | 2015-10-13T16:30:00.000 | 1 | 0 | 1 | 0 | python,django,pycharm,ipython,jupyter-notebook | 37,176,675 | 1 | true | 0 | 0 | Turned out to be easier than I thought.
So, in order to use IPython Notebook to debug local Django App in the Django Console, you need to add django-extensions library to your project's interpreter, append it to settings.py INSTALLED_APPS, then go to the "Terminal" tab in PyCharm (its options are in Settings -> Tools -... | 1 | 0 | 0 | PyCharm 4.5.4 has an option "Python Console" (Tools -> Python Console) which runs a Python interpreter with proper paths and allows to debug Django projects (for example). Aslo it has an option of using IPython if it is present, and the question is if it is possible to connect an IPython Notebook or QtConsole to this i... | Connect Ipython Notebook to PyCharm Python console | 1.2 | 0 | 0 | 811 |
33,112,374 | 2015-10-13T20:50:00.000 | 0 | 1 | 1 | 0 | python-3.x,error-handling | 33,115,056 | 1 | true | 0 | 0 | No, there is not for the simple reason an error may be transit for you while for someone else it may be seen as permanent, depending on the usage.
If in doubt, I choose the transient one.
If even you can't be sure about the errors from the software you designed, how can someone make this choice to be universal?
One a... | 1 | 1 | 0 | In my current project I have modules communicating using simple request/reply form of RPC (remote procedure calls). I want to automatically retry failed requests if and only if there is a chance that a new attempt might be successfull.
Vast majority of errors are permanent, but errors like timeouts and I/O errors are n... | Is there any classification of standard Python exceptions to transient and permanent errors? | 1.2 | 0 | 0 | 359 |
33,112,874 | 2015-10-13T21:23:00.000 | 0 | 0 | 1 | 0 | python,orange | 33,124,530 | 1 | false | 0 | 0 | No, there is no function to do this. Apparently nobody ever needed it.
You can do it yourself, but if you know some Python it should be easier to test a list of rules without using Orange. | 1 | 0 | 1 | I am wondering if Orange can read in a text format rule file and use it to score another dataset. For example, a rule.txt file was previously created in Orange through rule_to_string function and contains rules in this IF...THEN format:
"IF sex=['female'] AND status=['first'] THEN survived=yes". Can Orange read in the... | Can Orange read in IF...THEN text format rule file and use it to score another dataset? | 0 | 0 | 0 | 86 |
33,113,938 | 2015-10-13T22:52:00.000 | 2 | 0 | 1 | 0 | python,floating-point,integer,type-conversion,coercion | 33,113,979 | 4 | false | 0 | 0 | We have a good, obvious idea of what "make an int out of this float" means because we think of a float as two parts and we can throw one of them away.
It's not so obvious when we have a string. Make this string into a float implies all kinds of subtle things about the contents of the string, and that is not the kind of... | 1 | 8 | 0 | When I type int("1.7") Python returns error (specifically, ValueError). I know that I can convert it to integer by int(float("1.7")). I would like to know why the first method returns error. | Why is it not possible to convert "1.7" to integer directly, without converting to float first? | 0.099668 | 0 | 0 | 1,036 |
33,114,337 | 2015-10-13T23:38:00.000 | 2 | 0 | 0 | 0 | python,linux,pymssql | 35,328,465 | 2 | false | 0 | 0 | It is better if when you run python3.4 you can have modules for that version.
Another way to get the desire modules running is install pip for python 3.4
sudo apt-get install python3-pip
Then install the module you want
python3.4 -m pip install pymssql | 1 | 1 | 0 | I'm not overly familiar with Linux and am trying to run a Python script that is dependent upon Python 3.4 as well as pymssql. Both Python 2.7 and 3.4 are installed (usr/local/lib/[PYTHON_VERSION_HERE]). pymssql is also installed, except it's installed in the Python 2.7 directory, not the 3.4 directory. When I run my... | How to install pymssql to Python 3.4 rather than 2.7 on Ubuntu Linux? | 0.197375 | 1 | 0 | 5,321 |
33,116,793 | 2015-10-14T04:45:00.000 | 1 | 0 | 0 | 0 | python,usb,output,port,sensors | 33,116,916 | 2 | true | 0 | 0 | The USB port on your computer cannot read analog data because USBs work with digital signals. You would need an analog-to-digital converter (ADC). | 2 | 0 | 0 | I may be confusing a few concepts here so any help is appreciated.
Q1: Is it possible to attach any sensor in the world to the USB on my computer as long as it gives me analog data, and read its output? (e.g. pH, temperature, oxygen sensor etc as long as it gives me analog data)
Q2: If so, then what is the simplest way... | Reading Analog Data from sensor connected to USB (Python) | 1.2 | 0 | 0 | 1,931 |
33,116,793 | 2015-10-14T04:45:00.000 | 1 | 0 | 0 | 0 | python,usb,output,port,sensors | 33,117,665 | 2 | false | 0 | 0 | as @digitaLink answered, it is not possible directly via USB and yes, the obvious way is to use a PLC.
I would go the PLC way - in fact, I did it a few times in the past - and start with an Arduino and later develop a custom PCB, put it in a box and done.
Another possibility is to use a raspberry pi (or similar SBC), ... | 2 | 0 | 0 | I may be confusing a few concepts here so any help is appreciated.
Q1: Is it possible to attach any sensor in the world to the USB on my computer as long as it gives me analog data, and read its output? (e.g. pH, temperature, oxygen sensor etc as long as it gives me analog data)
Q2: If so, then what is the simplest way... | Reading Analog Data from sensor connected to USB (Python) | 0.099668 | 0 | 0 | 1,931 |
33,118,610 | 2015-10-14T06:58:00.000 | 1 | 0 | 1 | 1 | python,linux,windows,bash,shell | 33,118,839 | 1 | true | 0 | 0 | If repetition doesn't matter, then this command will do it:
sort <(sort file1 | uniq) <(sort file2 | uniq) | uniq -d | 1 | 1 | 0 | How do i find out the intersection of 2 files in windows?
TextFile A: 100GB
TextFile B: 10MB
All i can think of is using python
I would read the lines in textfile B into memory in python and compare with each line in text file A.
I was wondering if there is any way to do it via the command prompt in linux/windows. | Finding if a set of lines exists in a large text file | 1.2 | 0 | 0 | 35 |
33,119,667 | 2015-10-14T07:53:00.000 | 1 | 1 | 0 | 0 | python,authentication,gmail-api,imaplib | 33,492,711 | 6 | false | 0 | 0 | Thanks guys. Its working now. The issue was that the google blocked our network.. because of multiple attempts. I tried that unlock URL from a different URL and it didnt work. The catch is that, we have to run that URL in the machine where you are trying to run the script. Hope it may help someone :) | 3 | 17 | 0 | I am running a cron job which executes the python script for reading gmail (2 min interval). I have used imaplib for reading the new mails. This was working fine until yesterday. Suddenly its throwing below error
imaplib.error: [AUTHENTICATIONFAILED] Invalid credentials (Failure)
and sometimes i am getting the below ... | reading gmail is failing with IMAP | 0.033321 | 0 | 1 | 23,571 |
33,119,667 | 2015-10-14T07:53:00.000 | 2 | 1 | 0 | 0 | python,authentication,gmail-api,imaplib | 41,952,132 | 6 | false | 0 | 0 | Got the same error and it was fixed by getting the new google app password. Maybe this will work for someone | 3 | 17 | 0 | I am running a cron job which executes the python script for reading gmail (2 min interval). I have used imaplib for reading the new mails. This was working fine until yesterday. Suddenly its throwing below error
imaplib.error: [AUTHENTICATIONFAILED] Invalid credentials (Failure)
and sometimes i am getting the below ... | reading gmail is failing with IMAP | 0.066568 | 0 | 1 | 23,571 |
33,119,667 | 2015-10-14T07:53:00.000 | 24 | 1 | 0 | 0 | python,authentication,gmail-api,imaplib | 60,630,329 | 6 | false | 0 | 0 | Some apps and devices use less secure sign-in technology. So we need to enable Less secure app access option from gmail account.
Steps:
Login into Gmail
Go to Google Account
Navigate to Security section
Turn on access for Less secure app access
By following above steps, issue will be resolved. | 3 | 17 | 0 | I am running a cron job which executes the python script for reading gmail (2 min interval). I have used imaplib for reading the new mails. This was working fine until yesterday. Suddenly its throwing below error
imaplib.error: [AUTHENTICATIONFAILED] Invalid credentials (Failure)
and sometimes i am getting the below ... | reading gmail is failing with IMAP | 1 | 0 | 1 | 23,571 |
33,126,905 | 2015-10-14T13:37:00.000 | 1 | 0 | 0 | 0 | python,ios,objective-c,xcode,socketrocket | 33,127,431 | 1 | true | 0 | 0 | You do exactly that: you [can] pass around keys and make them show up in separate windows.
From the way you've phrased your question, you appear new to streams/sockets. I'd recommend you first start with one socket and make a chat application so you can get a feel for how to develop protocols which let you do that. | 1 | 2 | 0 | I would like to create multiple sockets between all users.
So how can i pass key and ID such as the server is divided in seprated windows.
Thank You. | SocketRocket (iOS) : How to identify whom user are chatting with another? | 1.2 | 0 | 1 | 141 |
33,134,816 | 2015-10-14T20:18:00.000 | 1 | 0 | 0 | 0 | python,dropbox,dropbox-api | 33,136,183 | 1 | true | 0 | 0 | No, Dropbox doesn't have an API like this. | 1 | 0 | 0 | I'd like to use the Dropbox API (with access only to my own account) to generate a link to SomeFile.xlsx that I can put in an email to multiple Dropbox account holders, all of whom are presumed to have access to the file. I'd like for the same link, when clicked on, to talk to Dropbox to figure out where SomeFile.xlsx ... | Relative link to local copy of Dropbox file | 1.2 | 1 | 0 | 82 |
33,136,726 | 2015-10-14T22:29:00.000 | 0 | 0 | 1 | 0 | python,appium,pytest,python-appium | 33,136,784 | 1 | false | 0 | 0 | If anybody sees this error then run "python setup.py install --force" and "sudo easy_install six==1.10.0" or "sudo pip install --upgrade six"
And after this do a pycache clean up at the root dir level. This will fix your problems. | 1 | 0 | 0 | File "build/bdist.macosx-10.10-x86_64/egg/pkg_resources/init.py",
line 2309, in load File
"build/bdist.macosx-10.10-x86_64/egg/pkg_resources/init.py", line
2326, in require File
"build/bdist.macosx-10.10-x86_64/egg/pkg_resources/init.py", line
810, in resolve pkg_resources.VersionConflict: (six 1.8.0
(/... | python site-packages pkg_resources.VersionConflicts | 0 | 0 | 0 | 333 |
33,137,191 | 2015-10-14T23:09:00.000 | 1 | 0 | 1 | 0 | python-2.7,compression,python-unicode | 33,137,509 | 1 | true | 0 | 0 | Compression operates on bytes, not text, so naturally it takes a str (2.x) or bytes (3.x) object. You don't need to care what the internal text representation is since you will encode/decode the text yourself.
Is there a safe encoding to choose that will also be somewhat minimal in size (for a majority of utf-8 docs)... | 1 | 0 | 0 | I have a Unicode string - under Python 2.7.
I also have a headache today – a real one that was not caused by Unicode – and can't maintain focus on the problem as much as I need to. I'm more mindless-drone than thinker until the pollen count drops.
I need to compress my 'string' using backports.lzma. Occasionally I ge... | encoding a unicode string for lzma compression | 1.2 | 0 | 0 | 650 |
33,137,569 | 2015-10-14T23:48:00.000 | 0 | 0 | 0 | 1 | python | 33,137,802 | 1 | false | 0 | 0 | Lots of options. Which you should choose depends on lots of things. Sorry for being so vague, but your question does not give any details besides the name Chrome.
How ever you start Chrome, e. g. by a button or menu of your window manager, maybe you can tweak that button or menu to start both programs. This is prob... | 1 | 0 | 0 | I have a program I want to open when I open Chrome. Instead of opening them separately, I want it to automatically start when Chrome starts. How would I write code to have the program attach itself to Chrome? I don't want the program to start on startup, just when Chrome starts. I know I can right click on the Chrome i... | Python code to open with another program? | 0 | 0 | 0 | 61 |
33,140,894 | 2015-10-15T05:55:00.000 | 0 | 1 | 0 | 0 | python,serial-port | 33,141,447 | 1 | false | 0 | 0 | This is not a python-related question, try a linux forum on boot sequence timeout | 1 | 0 | 0 | I have a python script which uses pygsm as the library for sending and receiving sms. However, I wish to put this script on auto-run upon booting up the raspberry pi. But the connecting time of the huawei modem usually takes a while, hence causing the shell script to skip the step. How do I make it so that it would con... | Python Auto-Start pyGSM Huawei | 0 | 0 | 0 | 65 |
33,144,885 | 2015-10-15T09:34:00.000 | 0 | 0 | 1 | 0 | python,python-3.x,python-decorators | 33,144,981 | 3 | false | 0 | 0 | In Python 2.6 or newer, yes. Older versions only support function/method decorators. | 1 | 1 | 0 | I know of function decorators and class method decorators.
But, is it also possible to decorate classes? | Is it possible to decorate classes? | 0 | 0 | 0 | 3,122 |
33,145,523 | 2015-10-15T10:01:00.000 | 3 | 0 | 0 | 1 | python,mod-wsgi,wsgi,apscheduler | 33,232,473 | 1 | false | 1 | 0 | You're right -- the scheduler won't start until the first request comes in.
Therefore running a scheduler in a WSGI worker is not a good idea. A better idea would be to run the scheduler in a separate process and connect to the scheduler when necessary via some RPC mechanism like RPyC or Execnet. | 1 | 5 | 0 | I would like to run APScheduler which is a part of WSGI (via Apache's modwsgi with 3 workers) webapp. I am new in WSGI world thus I would appreciate if you could resolve my doubts:
If APScheduler is a part of webapp - it becomes alive just after first request (first after start/reset Apache) which is run at least by o... | python: APScheduler in WSGI app | 0.53705 | 0 | 0 | 1,030 |
33,145,856 | 2015-10-15T10:17:00.000 | 2 | 0 | 1 | 0 | python,multiprocessing,cpython,python-internals | 33,146,935 | 2 | false | 0 | 0 | None of the functions you mention parallelize automatically. In general, silently spawning threads is considered poor form in most languages (this is changing, but it's still only seen in pure functional languages where thread safety is baked in by design); spawning lots of threads without giving warning is how you get... | 1 | 8 | 0 | I understand that cPython has a GIL so that your script can't run on multiple cores without using the multiprocessing module. But is there anything to stop the built in functions such as sorting using multiple cores? I don't understand cPython structure but I think the question I'm asking is 'are builtin functions like... | Does cPython use multiple cores for built-in functions such as sort, any, all? | 0.197375 | 0 | 0 | 152 |
33,146,245 | 2015-10-15T10:35:00.000 | 0 | 0 | 0 | 0 | python,django,printing,receipt | 57,876,597 | 1 | false | 1 | 0 | For a web app to use a device on the client, it has to go through the browser. I may be wrong, but I seriously doubt this is a built-in feature for receipt printers. I see three options:
1) Find/make a normal printer driver that works with your receipt printer, put it on the client box, and just use the normal print js... | 1 | 1 | 0 | I have created a simple POS application. I now have to send a command to the receipt printer to print the receipt. I don't have any code related to this problem as I don't know where to start even. My questions are:
1) Is Windows a good choice for working with receipt printers as every shop I went to use a desktop appl... | How to send command to receipt printers from Django app? | 0 | 0 | 0 | 1,911 |
33,150,684 | 2015-10-15T14:05:00.000 | 2 | 0 | 0 | 0 | python,caching,pandas,redis | 33,152,516 | 1 | false | 0 | 0 | I have a DF of ~ 1 GB of plain text data. Assuming the dumping to disk is always slower than reading I compared HDF5 write performance with pickle.
HDF5 took 35 sec while pickle did 190 sec. So, you could consider using HDF5 instead of pickle | 1 | 0 | 1 | Which method of caching pandas DataFrame objcts will provide the highest performance? By storing it to a flat file on disk using pickle, or by storing it in a key-value store like Redis? | Caching Pandas Dataframe by Serialization or In-memory KV Store | 0.379949 | 0 | 0 | 1,886 |
33,152,869 | 2015-10-15T15:43:00.000 | 1 | 0 | 1 | 0 | python,django | 56,910,915 | 1 | true | 1 | 0 | It really depends on the situation. Suppose if your Project A need to use Pip version 17.01 to run while your project B need to use Pip version 18.01 to run. So It is not possible to use 1 virtual env to run multiple project but the downside of having multiple virtual environments is it consume much space & resource of... | 1 | 2 | 0 | Another newbie to django here. I was wondering if it is recommended/not-recommended to run two different projects in the same virtualenv folder that have the same django version. To be more clear, is it necessary to create separate virtualenv everytime I want to start a new project when i know that i am using same djan... | Can I have multiple django projects in the same virtualenv folder | 1.2 | 0 | 0 | 1,645 |
33,154,410 | 2015-10-15T17:02:00.000 | 0 | 1 | 1 | 0 | python | 33,154,751 | 3 | false | 0 | 0 | The error is independent from the version, but it is not clear
what you want to do with your file.
If you want to read from it and you get such an error, it means that your file is not where you think it is. In any case you should write a line like testFile = open("test.txt","r").
If you want to create a new file and ... | 2 | 0 | 0 | I m using the command testFile = open("test.txt") to open a simple text file and received the following: Does such errors occur due to the version of python one uses?
IOError: [Errno 2] No such file or directory: 'Test.txt | python 2.7: Testing text file in idle | 0 | 0 | 0 | 43 |
33,154,410 | 2015-10-15T17:02:00.000 | 0 | 1 | 1 | 0 | python | 33,154,742 | 3 | false | 0 | 0 | Syntax for opening file is:
file object = open(file_name [, access_mode][, buffering])
As you have not mentioned access_mode(optional), default is 'Read'. But if file 'test.txt' does not exists in the folder where you are executing script, it will through an error as you got.
To correct it, either add access_mode as "a... | 2 | 0 | 0 | I m using the command testFile = open("test.txt") to open a simple text file and received the following: Does such errors occur due to the version of python one uses?
IOError: [Errno 2] No such file or directory: 'Test.txt | python 2.7: Testing text file in idle | 0 | 0 | 0 | 43 |
33,158,779 | 2015-10-15T21:23:00.000 | 3 | 1 | 0 | 0 | python,vim | 33,159,164 | 1 | false | 0 | 0 | This has been solved by adding "let python_highlight_builtins=1" in the .vimrc file. | 1 | 3 | 0 | I'm using the Vim editor to edit my python script on some remote clusters.I'm sure the Vim editors on both clusters have syntax highlight on. However, on one cluster I could see that all python keywords have been highlighted, while on the other one I could see only some of the python keywords are highlighted, and some ... | Vim only highlights part of the python syntax | 0.53705 | 0 | 0 | 62 |
33,161,270 | 2015-10-16T01:47:00.000 | 1 | 0 | 0 | 0 | python,matplotlib,seaborn | 44,307,542 | 2 | false | 0 | 0 | A solution to this is after importing seaborn do the following:
matplotlib.rcParams['lines.markeredgewidth'] = 1 | 2 | 4 | 1 | Apparently, importing seaborn sets the marker edges in a matplotlib.pyplot.plot to zero or deletes them.
e.g. plt.plot(x,y,maker='s',markerfacecolor='none')
results in a plot without markers.
Is there a way to get the edges back?
markeredgecolor='k' has no effect. | Seaborn Restore marker edges | 0.099668 | 0 | 0 | 3,009 |
33,161,270 | 2015-10-16T01:47:00.000 | 1 | 0 | 0 | 0 | python,matplotlib,seaborn | 43,644,522 | 2 | false | 0 | 0 | Give edgecolor='k' a try. This worked for me in a similar scatter plot. | 2 | 4 | 1 | Apparently, importing seaborn sets the marker edges in a matplotlib.pyplot.plot to zero or deletes them.
e.g. plt.plot(x,y,maker='s',markerfacecolor='none')
results in a plot without markers.
Is there a way to get the edges back?
markeredgecolor='k' has no effect. | Seaborn Restore marker edges | 0.099668 | 0 | 0 | 3,009 |
33,161,725 | 2015-10-16T02:45:00.000 | 0 | 0 | 1 | 1 | python,ubuntu | 33,161,926 | 1 | false | 0 | 0 | Try to kill the process which is opening the python file
or you can reboot your windows
It may resolve the problem | 1 | 0 | 0 | I use a shared folder to share files in linux with a windows machine. However, after i have edited a python file using notepad++ in windows, changed the owner of the file to the user of ubuntu, and run the file, i wanted to edit the file again, when i save the file, I get the following error.
'Please check whether if ... | unable save file in a shared folder on a remote ubuntu machine using notepad++ | 0 | 0 | 0 | 59 |
33,162,320 | 2015-10-16T03:56:00.000 | 0 | 0 | 0 | 0 | python,excel,csv,pandas | 33,162,435 | 2 | false | 0 | 0 | This is a time formatting problem/philosophy by Excel. For some reason, Microsoft prefers to hide seconds and sub-seconds on user displays: even MSDOS's dir command omitted seconds.
If I were you, I'd use Excel's format operation and set it to display seconds, then save the spreadsheet as CSV and see if it put anyth... | 1 | 2 | 1 | I am using python pandas to read csv file. The csv file has a datetime column that has second precisions "9/1/2015 9:25:00 AM", but if I open in excel, it has only minute precisions "9/1/15 9:25". Moreover, when I use the pd.read_csv() function, it only shows up to minute precision. Is there any way that I could solve... | Use Python to Change csv Data Column Format | 0 | 0 | 0 | 1,815 |
33,165,523 | 2015-10-16T08:11:00.000 | 0 | 0 | 0 | 0 | python,logging | 33,166,177 | 1 | false | 0 | 0 | Ok, I found this in the doc
The level and handlers entries are interpreted as for the root logger, except that if a non-root logger’s level is specified as NOTSET, the system consults loggers higher up the hierarchy to determine the effective level of the logger.
So I guess That the NOTSET level only makes the logge... | 1 | 0 | 0 | If I have a logger that's directly under root, and that I set its level to NOTSET while propagate = False. What would happen ?
The doc is unclear to me :
When a logger is created, the level is set to NOTSET (which causes all messages to be processed when the logger is the root logger, or delegation to the parent when ... | Difference between level = NOTSET and propagate | 0 | 0 | 0 | 98 |
33,165,668 | 2015-10-16T08:21:00.000 | 2 | 0 | 0 | 0 | python,cython,kalman-filter | 33,167,366 | 2 | true | 0 | 0 | The size of the covariance matrix is driven by the size of your state. Another question relates to the assumptions on your model and if this can bring up significant optimizations (obviously, optimizing implies reworking the "standard KF").
From my POV, your situation roughly depends on the value (number_of_states² * ... | 2 | 1 | 1 | I wonder if anyone can give me a pointer to really fast/efficient Kalman filter implementation, possibly in Python (or Cython, but C/C++ could also work if it is much faster). I have a problem with many learning epochs (possibly hundreds of millions), and many input (cues; say, between tens to hundred thousands). Thus,... | Fast Kalman Filter | 1.2 | 0 | 0 | 1,111 |
33,165,668 | 2015-10-16T08:21:00.000 | 1 | 0 | 0 | 0 | python,cython,kalman-filter | 33,264,437 | 2 | false | 0 | 0 | If you have many measurements per update, you should look at the information form of the Kalman filter. Each additional measurement is just addition. The tradeoff is a more complex predict step, and the cost of inverting the information matrix whenever you want to get your state out. | 2 | 1 | 1 | I wonder if anyone can give me a pointer to really fast/efficient Kalman filter implementation, possibly in Python (or Cython, but C/C++ could also work if it is much faster). I have a problem with many learning epochs (possibly hundreds of millions), and many input (cues; say, between tens to hundred thousands). Thus,... | Fast Kalman Filter | 0.099668 | 0 | 0 | 1,111 |
33,168,836 | 2015-10-16T10:59:00.000 | 1 | 0 | 0 | 0 | python,r,machine-learning,scikit-learn | 33,170,242 | 1 | false | 0 | 0 | If you have to make predictions at each time stamp, then this doesn't become a a time series problem (unless you plan to use the sequence of previous observations to make your next prediction, in which case you will need to train a sequence based model). Assuming you can only train a model based on the final data you o... | 1 | 1 | 1 | I have a classification problem with time series data.
Each example has 10 variables which are measured at irregular intervals and in the end the object is classified into 1 of the 2 possible classes (binary classification).
I have only the final class of the example to learn from during training. But when given a new ... | Implementing online learning with time series | 0.197375 | 0 | 0 | 317 |
33,169,134 | 2015-10-16T11:15:00.000 | 0 | 0 | 1 | 0 | python,.net,windows,installation | 33,175,765 | 1 | true | 0 | 0 | First thing would be to check if you have downloaded all the bytes for the .msi. Then right-click on the .msi file and go to Properties. Click on the Compatibility tab and select "Run on compatibility mode for". When I've tried compatibility mode it has not help, but it might for you. Good luck! | 1 | 0 | 0 | I have installed the win 8.1 professional edition.
But the xx.msi file (i.e., python, .net framework etc.) can not be installed on win 8.1.
When I want to install it, it just terminates quickly.
Despite of I running it with Administrator role.
So, is there any solutions for installing the xx.msi file on win 8.1?
Than... | msi can not be installed on win 8.1? | 1.2 | 0 | 0 | 27 |
33,170,016 | 2015-10-16T12:01:00.000 | 0 | 0 | 0 | 0 | python,django,orm | 67,953,078 | 5 | false | 1 | 0 | I had to add import django, and then this worked. | 1 | 26 | 0 | I've used Django ORM for one of my web-app and I'm very much comfortable with it. Now I've a new requirement which needs database but nothing else that Django offers. I don't want to invest more time in learning one more ORM like sqlalchemy.
I think I can still do
from django.db import models
and create models, but th... | How to use Django 1.8.5 ORM without creating a django project? | 0 | 0 | 0 | 15,755 |
33,172,090 | 2015-10-16T13:45:00.000 | 1 | 0 | 0 | 0 | python,algorithm,performance,minimum-spanning-tree,delaunay | 33,175,701 | 1 | true | 0 | 0 | NB: this assumes we're working in 2-d
I suspect that what you are doing now is feeding all point to point distances to the MST library. There are on the order of N^2 of these distances and the asymptotic runtime of Kruskal's algorithm on such an input is N^2 * log N.
Most algorithms for Delaunay triangulation take N lo... | 1 | 0 | 1 | I have a code that makes Minimum Spanning Trees of many sets of points (about 25000 data sets containing 40-10000 points in each set) and this is obviously taking a while. I am using the MST algorithm from scipy.sparse.csgraph.
I have been told that the MST is a subset of the Delaunay Triangulation, so it was suggested... | Speed up Python MST calculation using Delaunay Triangulation | 1.2 | 0 | 0 | 659 |
33,172,753 | 2015-10-16T14:19:00.000 | 0 | 0 | 0 | 0 | python,vector,pygame,trigonometry | 33,172,964 | 3 | false | 0 | 1 | The vector of acceleration will be in the direction from the mouse cursor to the ship, away from the mouse position - so if the line from mouse to ship is at angle theta to horizontal (where anticlockwise theta is +ve, clockwise is -ve), so will the force F acting on the ship to accelerate it. If ship has mass M then u... | 1 | 0 | 0 | I have a ship that shoots lasers. It draws a line from itself to (mouseX, mouseY). How can I have the ship accelerate in the exact opposite direction as if being pushed backwards?
I have been working through some trig and ratios but am not making much progress. Acceleration is constant so how far the mouse is doesn't m... | How to have an object run directly away from mouse at a constant speed | 0 | 0 | 0 | 185 |
33,172,842 | 2015-10-16T14:24:00.000 | 0 | 0 | 1 | 0 | python,excel,xlwings | 33,176,797 | 4 | true | 0 | 0 | A small workaround could be to package your application with cx_freeze or pyinstaller. Then it can run on a machine without installing python. The downside is of course that the program tend to be a bit bulky in size. | 3 | 1 | 0 | I am doing an application in Excel and I'd like to use python language. I've seen a pretty cool library called xlwings, but to run it a user need to have python installed.
Is there any possibility to prepare this kind of application that will be launch from a PC without Python?
Any suggestion are welcome! | create an application in excel using python for a user without python | 1.2 | 1 | 0 | 963 |
33,172,842 | 2015-10-16T14:24:00.000 | 0 | 0 | 1 | 0 | python,excel,xlwings | 33,176,474 | 4 | false | 0 | 0 | It is possible using xlloop. This is a customized client-server approach, where the client is an excel .xll which must be installed on client's machine.
The server can be written in many languages, including python, and of course it must be launched on a server that has python installed. Currently the .xll is availabl... | 3 | 1 | 0 | I am doing an application in Excel and I'd like to use python language. I've seen a pretty cool library called xlwings, but to run it a user need to have python installed.
Is there any possibility to prepare this kind of application that will be launch from a PC without Python?
Any suggestion are welcome! | create an application in excel using python for a user without python | 0 | 1 | 0 | 963 |
33,172,842 | 2015-10-16T14:24:00.000 | 0 | 0 | 1 | 0 | python,excel,xlwings | 33,172,988 | 4 | false | 0 | 0 | no. you must need install a python and for interpreting the python function etc. | 3 | 1 | 0 | I am doing an application in Excel and I'd like to use python language. I've seen a pretty cool library called xlwings, but to run it a user need to have python installed.
Is there any possibility to prepare this kind of application that will be launch from a PC without Python?
Any suggestion are welcome! | create an application in excel using python for a user without python | 0 | 1 | 0 | 963 |
33,176,353 | 2015-10-16T17:35:00.000 | 0 | 0 | 1 | 0 | python,pip,pypi | 53,302,849 | 4 | false | 0 | 0 | In this case, the .pip folder will be hidden as well as the new empty file pip.conf.
To view this folder from the Apple Finder, open Terminal, at the prompt$ copy/paste this in:
defaults write com.apple.finder AppleShowAllFiles -bool true
Next, copy/paste this in:
killall Finder
You can now see the hidden folder, the... | 3 | 3 | 0 | I'm trying to edit ~/.pip/pip.conf file but the .pip folder is not present in osx.
I have pip installed globally as well as using it in various virtual environments.
Do I need to create this folder and file manually? | .pip folder not in HOME directory on OSX | 0 | 0 | 0 | 2,597 |
33,176,353 | 2015-10-16T17:35:00.000 | 1 | 0 | 1 | 0 | python,pip,pypi | 33,177,206 | 4 | false | 0 | 0 | It should be in $HOME/.pip/pip.conf. | 3 | 3 | 0 | I'm trying to edit ~/.pip/pip.conf file but the .pip folder is not present in osx.
I have pip installed globally as well as using it in various virtual environments.
Do I need to create this folder and file manually? | .pip folder not in HOME directory on OSX | 0.049958 | 0 | 0 | 2,597 |
33,176,353 | 2015-10-16T17:35:00.000 | 0 | 0 | 1 | 0 | python,pip,pypi | 33,180,292 | 4 | false | 0 | 0 | I had to create my own pip.conf file.
If using virtual env, create the pip.conf at the root of $VIRTUAL_ENV or the root of your virtual env folder. | 3 | 3 | 0 | I'm trying to edit ~/.pip/pip.conf file but the .pip folder is not present in osx.
I have pip installed globally as well as using it in various virtual environments.
Do I need to create this folder and file manually? | .pip folder not in HOME directory on OSX | 0 | 0 | 0 | 2,597 |
33,176,740 | 2015-10-16T17:57:00.000 | 0 | 0 | 1 | 0 | python-3.x | 33,178,199 | 1 | false | 0 | 0 | Sounds like the file you are trying to run is simply a log of everything that you typed and that was printed while you typed; the first line being the version info of the python you are running, which is definitely not executable code, hence the "invalid syntax" error.
What you'll want to do is open an empty text file,... | 1 | 1 | 0 | I am new, like still have the plastic wrapping on me, new, to programming anything much less Python but I am trying to learn. My first experience is baffling already. I typed out some get to know the program code and as I was doing it everything was fine within the shell, blah blah. I saved and opened it again to wa... | Syntax Error in the version info when trying to run a module in Python 3.2 | 0 | 0 | 0 | 999 |
33,181,503 | 2015-10-17T00:46:00.000 | 1 | 0 | 1 | 0 | python,python-2.7,dictionary | 33,181,543 | 3 | false | 0 | 0 | To get valz just use d[key2][2]. | 3 | 3 | 0 | I have a dictionary as follows:
d = {key: [val1, val2, val3....], key2: [valx, valy, valz, ...], ....}
Is it possible to get nth element of the value lists? Example: d{key2:[2]} would return 'valz'.
I tried d.get({key:[0]}) but got:
"TypeError: unhashable type: 'dict'" | Accessing nth Element of a list value for a given key: Python dictionary | 0.066568 | 0 | 0 | 5,798 |
33,181,503 | 2015-10-17T00:46:00.000 | 5 | 0 | 1 | 0 | python,python-2.7,dictionary | 33,181,553 | 3 | false | 0 | 0 | d[key][0] does the trick for me, unless I misunderstand the question. | 3 | 3 | 0 | I have a dictionary as follows:
d = {key: [val1, val2, val3....], key2: [valx, valy, valz, ...], ....}
Is it possible to get nth element of the value lists? Example: d{key2:[2]} would return 'valz'.
I tried d.get({key:[0]}) but got:
"TypeError: unhashable type: 'dict'" | Accessing nth Element of a list value for a given key: Python dictionary | 0.321513 | 0 | 0 | 5,798 |
33,181,503 | 2015-10-17T00:46:00.000 | 0 | 0 | 1 | 0 | python,python-2.7,dictionary | 33,181,557 | 3 | false | 0 | 0 | Your problem is that d.get({key:[0]}) is equivanlent to d[{key:[0]}], amd dictionaries are illegal keys in dictionaries. The correct solution is d[key][0] | 3 | 3 | 0 | I have a dictionary as follows:
d = {key: [val1, val2, val3....], key2: [valx, valy, valz, ...], ....}
Is it possible to get nth element of the value lists? Example: d{key2:[2]} would return 'valz'.
I tried d.get({key:[0]}) but got:
"TypeError: unhashable type: 'dict'" | Accessing nth Element of a list value for a given key: Python dictionary | 0 | 0 | 0 | 5,798 |
33,181,588 | 2015-10-17T00:59:00.000 | 0 | 0 | 1 | 0 | python,string,parsing | 33,181,629 | 1 | true | 0 | 0 | If the b' and the ' at then end are really part of the string, s[2:-1] would work. But problably they are just repr output which isn't actually part of the string. | 1 | 0 | 0 | I have a string that has a b' at the beginning and a ' at the end. It also has a \n after 21 characters, it seems that the API I am calling is adding these. How is the best way to remove these and only these.
Note: I can just remove up to the \n and readd the text that is supposed to be there since it never changes. | Removing Specific Characters from Specific spots in a Python string | 1.2 | 0 | 0 | 41 |
33,183,963 | 2015-10-17T07:18:00.000 | 0 | 0 | 0 | 1 | multithreading,python-2.7,sockets,google-app-engine,apple-push-notifications | 33,184,298 | 1 | false | 1 | 0 | Found the issue. I was calling start_background_thread with argument set to function(). When I fixed it to calling it as function it worked as expected. | 1 | 0 | 0 | Does Google App engine support multithreading? I am seeing conflicting reports on the web.
Basically, I am working on a module that communicates with Apple Push Notification server (APNS). It uses a worker thread that constantly looks for new messages that need to be pushed to client devices in a pull queue.
After it ... | Multi-threading on Google app engine | 0 | 0 | 0 | 921 |
33,184,127 | 2015-10-17T07:40:00.000 | 1 | 0 | 0 | 1 | python-2.7,web-applications,command-line,pycharm | 33,184,244 | 1 | true | 1 | 0 | Based on what you've described, there are many ways to approach this:
Create a terminal emulator on your webpage.
If you want nicer UI, you can set up any web framework and have your command line programs in the backend, while exposing frontend interfaces to allow users to input parameters and see the results.
If you'... | 1 | 1 | 0 | I am new to programming and web apps so i am not even sure if this question is obvious or not.
Sometimes I find command line programs more time efficient and easy to use (even for the users). So is there a way to publish my command line programs with command line interface to a web as a web app using cgi or Wsgi?
For ... | Command line programs in a web (python) | 1.2 | 0 | 0 | 179 |
33,187,572 | 2015-10-17T14:11:00.000 | 0 | 0 | 0 | 0 | python,django | 33,187,887 | 2 | false | 1 | 0 | Even if you could do this, it wouldn't help solve your ultimate problem. You can't use order_by on concatenated querysets from different models; that can't possibly work, since it is a request for the database to do an ORDER BY on the query. | 2 | 1 | 0 | In Django, how does one give an attribute field name an alias that can be used to manipulate a queryset?
Background: I have a queryset where the underlying model has an auto-generating time field called "submitted_on". I want to use an alias for this time field (i.e. "date"). Why? Because I will concatenate this query... | Making an alias for an attribute field, to be used in a django queryset | 0 | 0 | 0 | 452 |
33,187,572 | 2015-10-17T14:11:00.000 | 0 | 0 | 0 | 0 | python,django | 33,192,349 | 2 | true | 1 | 0 | It seems qset1 = qset1.annotate(date=Max('submitted_on')) is the closest I have right now. This, or using exclude(). I'll update if I get a better solution. Of course other experts from SO are welcome to chime in with their own answers. | 2 | 1 | 0 | In Django, how does one give an attribute field name an alias that can be used to manipulate a queryset?
Background: I have a queryset where the underlying model has an auto-generating time field called "submitted_on". I want to use an alias for this time field (i.e. "date"). Why? Because I will concatenate this query... | Making an alias for an attribute field, to be used in a django queryset | 1.2 | 0 | 0 | 452 |
33,188,104 | 2015-10-17T15:08:00.000 | 7 | 0 | 1 | 0 | python,python-3.x,pycharm | 33,825,637 | 1 | true | 0 | 0 | If you are using [Right Alt] + F to insert square bracket (for example with Czech keyboard layout), pycharm interprets it as [Ctrl] + [Alt] + F, which is a shortcut to some sort of refactoring.
You can change the shortcut to something else in File - Settings - Keymap - Main menu - Refactor - Extract - Field.. | 1 | 3 | 0 | I am running python 3.5.0 on pycharm community edition 4.5.4, and every time i try to insert an open square bracket to , for example, define a list it just gives me an error saying: "Cannot perform refactoring using selected element(s)"
This is really confusing because it seemed to work fine on the older python version... | pycharm error:cannot perform refactoring using selected element(s) | 1.2 | 0 | 0 | 3,951 |
33,193,501 | 2015-10-18T01:52:00.000 | -1 | 0 | 0 | 0 | django,python-3.3 | 33,193,714 | 1 | false | 1 | 0 | The easiest way is to use multiple browsers, and if necessary, multiple dev servers on alternate ports. 8000, 8001, etc. | 1 | 1 | 0 | I was wondering whether it is possible to have more than one user log in on a development server using Django 1.8
I am creating an app, where these "active" users are able to view one another details (or fields) respective to the relative models I designed.
Currently, I am only able to log in as a single user and wonde... | Multiple user logins on a development server using Django | -0.197375 | 0 | 0 | 103 |
33,194,779 | 2015-10-18T05:51:00.000 | 0 | 0 | 0 | 0 | python,arrays,numpy,resampling | 33,197,300 | 1 | true | 0 | 0 | Following Warren Weckesser's comment, the answer is using scipy.interpolate.interp1d | 1 | 1 | 1 | I've a nx2 ndarray which represent a height profile of the form h(x), with x being a non-negative real number and h(x) the height value in x. The x-values are irregular distributed, meaning:
x[i] - x[i - 1] != x[i + 1] - x[i]
I would like to take my array and create a new one with evenly spaced x-values with the corres... | Resampling an irregular distributed 1-D signal in python | 1.2 | 0 | 0 | 142 |
33,196,427 | 2015-10-18T09:36:00.000 | 0 | 0 | 0 | 0 | python-2.7,image-processing,histogram,contrast | 33,197,079 | 1 | true | 0 | 0 | Let the total mass of the histogram be M.
Accumulate the mass in the bins, starting from index zero, until you pass 0.01 M. You get an index Q01.
Decumulate the mass in the bins, starting from the maximum index, until you pass 0.99 M. You get an index Q99.
These indexes are the so-called first and last percentiles. The... | 1 | 0 | 1 | I need to calculate the contrast of an color image, so the steps that was given to me are,
computed the histogram for RGB channel separately and combined it together as Histogram = histOfRedC + histOfBlueC + histOfgreenC.
normalize it to unit length, as each image is of different size.
The contrast quality, is equal ... | How to Calculate width of the middle 98% mass of the gray level histogram of a image | 1.2 | 0 | 0 | 140 |
33,205,691 | 2015-10-19T02:27:00.000 | 1 | 0 | 0 | 0 | python,oslo | 34,715,692 | 1 | false | 0 | 0 | The oslo namespace package is deprecated, you can see nothing in /usr/lib/python2.7/dist_packages/oslo, except middle directory, after oslo.config is installed. so use oslo_config instead when you want to import something. | 1 | 0 | 0 | I`m trying to use the oslo config package. But I found that someone is using this package like this
import oslo.config
while some others using it like this
import oslo_config
I`m confused , can anyone tell me what is the difference between this two package?
Thanks | what is the different between oslo.config and oslo_config? | 0.197375 | 0 | 1 | 363 |
33,208,805 | 2015-10-19T07:26:00.000 | 1 | 0 | 0 | 0 | python,django | 33,209,925 | 3 | false | 1 | 0 | Do I put the code in a specific view
a django view is a callable that must accept an HTTP request and return an HTTP response, so unless you need to be able to call your code thru HTTP there's no point in using a view at all, and even if you want to have a view exposing this code it doesn't mean the code doing the API... | 1 | 2 | 0 | I'm unsure how to approach this problem in general in my Django app:
I need to make a call to an API every n days. I can make this call and fetch the data required via Python, but where exactly should I put the code?
Do I put the code in a specific view and then map the view to a URL and have that URL called whenever I... | Create New Model Instance with API Call in Django | 0.066568 | 0 | 0 | 305 |
33,210,021 | 2015-10-19T08:38:00.000 | 0 | 0 | 0 | 0 | python,encryption,autobahn | 33,211,565 | 1 | false | 1 | 0 | You haven't provided information on how you are encrypting your data. But you should never send the private keys over the network. Never. Doing that is as secure as locking your house but leave the key in the keyhole. If you've done it even once, throw the key away and generate a new one.
The strength of RSA comes from... | 1 | 0 | 0 | I'm new in python and websocket programmer.
I want to sent data that was encrypted with RSA key (in Python) through websocket to server in cloud (using nodeJs). For decrypt that data I need that key, right?
How I can sent RSA to server and use that key to decrypt?
Thankyou | Sent RSA Key Through Autobahn | 0 | 0 | 1 | 120 |
33,210,107 | 2015-10-19T08:43:00.000 | 2 | 0 | 1 | 0 | python,dictionary | 33,210,477 | 3 | false | 0 | 0 | In addition to @Martijn Pieters' answer:
In case your Foo is a heavy one, you can define a class Bar with minimal functionality (self.id, __eq__ and __hash__) and make your Foo inherit from it.
Then you can use lightweight Bar instance to retrieve value associated with Foo object from your dictionary. | 3 | 2 | 0 | I have a class Foo that has an instance string variable id. I implemented the __eq__ and __hash__ magic methods so that they only use id, so a Foo instance and its string id are mapped to the same hashtable bucket. However say there is a dict with keys being Foo instances, and I only have the string id. I want to re... | Retrieve key from key in dict | 0.132549 | 0 | 0 | 88 |
33,210,107 | 2015-10-19T08:43:00.000 | 2 | 0 | 1 | 0 | python,dictionary | 33,210,141 | 3 | false | 0 | 0 | Simply create a dummy Foo object with the given id, and look that up in the map. | 3 | 2 | 0 | I have a class Foo that has an instance string variable id. I implemented the __eq__ and __hash__ magic methods so that they only use id, so a Foo instance and its string id are mapped to the same hashtable bucket. However say there is a dict with keys being Foo instances, and I only have the string id. I want to re... | Retrieve key from key in dict | 0.132549 | 0 | 0 | 88 |
33,210,107 | 2015-10-19T08:43:00.000 | 3 | 0 | 1 | 0 | python,dictionary | 33,210,123 | 3 | true | 0 | 0 | There is no way to retrieve the corresponding Foo() object used a key directly, no.
Your options are to loop over all keys and match the id attribute, or perhaps recreate the object with Foo(id); if all you need to do is use this as a lookup key then that should more than suffice.
If these objects have more attributes ... | 3 | 2 | 0 | I have a class Foo that has an instance string variable id. I implemented the __eq__ and __hash__ magic methods so that they only use id, so a Foo instance and its string id are mapped to the same hashtable bucket. However say there is a dict with keys being Foo instances, and I only have the string id. I want to re... | Retrieve key from key in dict | 1.2 | 0 | 0 | 88 |
33,211,130 | 2015-10-19T09:36:00.000 | 0 | 0 | 0 | 0 | python,django,printers | 33,211,416 | 1 | false | 1 | 0 | This should not be a Django matter. It doesn't matter if the web app is on your local machine, a web app is a web app. You have to make clear in your design if you wish to use a printer as a server or as a client.
Since I assume that it is more reasonable to print as the end user, you can simply use a bit of javascript... | 1 | 0 | 0 | I have created one python based web-application. Basically the application is printing the customer bills as per their purchase. So I have created bill format but not sure how to print that by clicking on button print which i have added in page.
My requirement here is when I click on that print button of my application... | Steps to connect Epson LK 300 II with python application | 0 | 0 | 0 | 48 |
33,211,272 | 2015-10-19T09:44:00.000 | 0 | 0 | 1 | 0 | programming-languages,python-nonlocal | 71,878,951 | 3 | false | 0 | 0 | "nonlocal" means that a variable is "neither local or global", i.e, the variable is from an enclosing namespace (typically from an outer function of a nested function).
An important difference between nonlocal and global is that the a nonlocal variable must have been already bound in the enclosing namespace (otherwise ... | 1 | 5 | 0 | I am learning the concepts of programming languages.
I found the terminology "nonlocal" in python syntax.
What is the meaning of nonlocal in python?? | What is the difference between non local variable and global variable? | 0 | 0 | 0 | 4,873 |
33,211,867 | 2015-10-19T10:14:00.000 | 0 | 1 | 0 | 1 | python,apscheduler | 43,736,075 | 3 | false | 0 | 0 | Another approach: you can write logic of your job in separate function. So, you will be able to call this function in your scheduled job as well as somewhere else. I guess that this is a more explicit way to do what you want. | 1 | 4 | 0 | Using APScheduler version 3.0.3. Services in my application internally use APScheduler to schedule & run jobs. Also I did create a wrapper class around the actual APScheduler(just a façade, helps in unit tests). For unit testing these services, I can mock the this wrapper class. But I have a situation where I would rea... | Can we force run the jobs in APScheduler job store? | 0 | 0 | 0 | 1,592 |
33,212,196 | 2015-10-19T10:32:00.000 | 2 | 0 | 1 | 0 | python,python-2.7,python-3.x | 33,212,364 | 1 | false | 0 | 0 | Yes, indexing should be atomic, as long as you do it on a native list, and not one where someone could have redirected __getitem__; however, that's an implementation detail, and you can't rely on it.
No, it's not solely because of the GIL, but because switching between threads is only allowed between single interpreter... | 1 | 1 | 0 | I read somewhere that indexing a list e.g. l[3] is an atomic operation. Is the atomicity achieved because of global interpreter lock. | Regarding atomicity of Python statements and Global Interpreter Lock | 0.379949 | 0 | 0 | 107 |
33,212,370 | 2015-10-19T10:42:00.000 | 1 | 0 | 0 | 0 | python,internet-explorer,internet-explorer-11,robotframework | 35,595,207 | 2 | false | 1 | 0 | I have also encountered the same problem.Below are the steps which i have followed.
1.I have enabled the proxy in IE.
2.Set environmental variable no_proxy to 127.0.0.1 before launching the browser
Ex: Set Environmental Variable no_proxy 127.0.0.1
3.Set all the internet zones to same level(medium to high) expect restri... | 1 | 3 | 0 | I am writing some test cases in the Robot Framework using Ride. I can run the tests on both Chrome and Firefox, but for some reason Internet Explorer is not working.
I have tested with the iedriverServer.exe (32bit version 2.47.0.0).
One thing to add is that I am using a proxy. When I disable the proxy in IE and enable... | Robot Framework Internet explorer not opening | 0.099668 | 0 | 1 | 5,285 |
33,212,589 | 2015-10-19T10:53:00.000 | 1 | 0 | 1 | 0 | python-3.x,sentry | 33,223,249 | 1 | false | 0 | 0 | The clients are version agnostic (that is, they run on anything newer than 2.5) so they don't care what version you're using for your applications. That said, the server will never run on Python 3, but it simply doesn't matter as its isolated. A bit extreme, but its kind of the same direction as "can we run the server ... | 1 | 3 | 0 | I've been using Sentry with Python 2.7, is there any problem with using Python 3 ? The documentation in the official site only refers to Sentry with Virtualenv and Pip and not Virtualenv for Python 3 and Pip3. | Sentry with Python 3 | 0.197375 | 0 | 0 | 886 |
33,216,350 | 2015-10-19T13:55:00.000 | 1 | 0 | 0 | 0 | python,paraview | 33,282,334 | 1 | true | 0 | 0 | Usually plots are made by plotting one data array versus another. You can often obtain that data directly from the filter/source that produced it and save it to a CSV file. To do this, select
You can save data from a filter as a CSV file by selecting the filter/source in the Pipeline Browser and choosing File -> Save ... | 1 | 0 | 1 | How to extract data from plot data filter in paraview through python script?? I want to get data through python script by which paraview is drawing the graph.
If anyone know this answer please help
Thank you | extracting the data through python script in paraview | 1.2 | 0 | 0 | 628 |
33,220,279 | 2015-10-19T17:18:00.000 | 0 | 0 | 0 | 1 | python,google-app-engine,cron | 33,220,726 | 1 | false | 0 | 0 | Unfortunately, you cannot combine the weekday option with the interval.
You could add a switch in the request handler of your cron-job, that will just exit if current week-day is not Saturday, while your cron.job is scheduled "every 2 minutes from 01:00 to 03:00". But that means that your handler will be called 300 tim... | 1 | 0 | 0 | I wanted to run my cron job as 'schedule: every saturday every 2 minutes from 01:00 to 3:00', and it won't allow this format. Is it possible to set a cron job to target another cron job? Or is my schedule possible just not in the correct format? | Google App Engine Python Cron Job | 0 | 0 | 0 | 34 |
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