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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
131,327 | 2008-09-25T03:25:00.000 | 2 | 0 | 0 | 0 | python,django | 136,399 | 2 | true | 1 | 0 | If it's core functionality for saving the model you'll want it as part of the save method. However, if you already have a functioning model and you want to extend it for other purposes then signals are your best bet since they allow for properly decoupled modules.
A good example might be that you want to add event logg... | 2 | 1 | 0 | I plan to serialize a Django model to XML when it's saved or updated. (The XML's going to be imported into a flash movie). Is it better to listen for a post_save() or pre_save() signal and then perform the serialization, or to just handle it in the model's save() methon | Style - When to serialize a Django model Instance: signals vs model's save method | 1.2 | 0 | 0 | 1,205 |
131,327 | 2008-09-25T03:25:00.000 | 0 | 0 | 0 | 0 | python,django | 131,383 | 2 | false | 1 | 0 | Post save. That way the new data (the reason for performing the serialization) is already in the database. It'll make for a much cleaner bit of code that simply takes from the database and doesn't have to worry about adding an extra value.
The other way that comes to mind is to maintain the xml file in parallel to the ... | 2 | 1 | 0 | I plan to serialize a Django model to XML when it's saved or updated. (The XML's going to be imported into a flash movie). Is it better to listen for a post_save() or pre_save() signal and then perform the serialization, or to just handle it in the model's save() methon | Style - When to serialize a Django model Instance: signals vs model's save method | 0 | 0 | 0 | 1,205 |
134,314 | 2008-09-25T16:18:00.000 | 0 | 0 | 1 | 0 | ironpython,ironruby | 134,329 | 4 | false | 0 | 0 | We don't actively track these kinds of numbers, but you could download them and run them against the respective test suites for the languages if you wanted to boil it down to a single numeric value. | 1 | 4 | 0 | Does anyone have some numbers on this? I am just looking for a percentage, a summary will be better.
Standards compliance: How does the implementation stack up to the standard language specification?
For those still unclear: I place emphasis on current. The IronPython link provided below has info that was last edited m... | Current standard compliance level of IronPython & IronRuby | 0 | 0 | 0 | 350 |
135,041 | 2008-09-25T18:24:00.000 | 2 | 0 | 1 | 0 | python,range,xrange | 135,531 | 12 | false | 0 | 0 | Okay, everyone here as a different opinion as to the tradeoffs and advantages of xrange versus range. They're mostly correct, xrange is an iterator, and range fleshes out and creates an actual list. For the majority of cases, you won't really notice a difference between the two. (You can use map with range but not w... | 4 | 462 | 0 | Why or why not? | Should you always favor xrange() over range()? | 0.033321 | 0 | 0 | 213,342 |
135,041 | 2008-09-25T18:24:00.000 | 4 | 0 | 1 | 0 | python,range,xrange | 135,081 | 12 | false | 0 | 0 | Go with range for these reasons:
1) xrange will be going away in newer Python versions. This gives you easy future compatibility.
2) range will take on the efficiencies associated with xrange. | 4 | 462 | 0 | Why or why not? | Should you always favor xrange() over range()? | 0.066568 | 0 | 0 | 213,342 |
135,041 | 2008-09-25T18:24:00.000 | 13 | 0 | 1 | 0 | python,range,xrange | 135,070 | 12 | false | 0 | 0 | xrange() is more efficient because instead of generating a list of objects, it just generates one object at a time. Instead of 100 integers, and all of their overhead, and the list to put them in, you just have one integer at a time. Faster generation, better memory use, more efficient code.
Unless I specifically need ... | 4 | 462 | 0 | Why or why not? | Should you always favor xrange() over range()? | 1 | 0 | 0 | 213,342 |
135,041 | 2008-09-25T18:24:00.000 | 42 | 0 | 1 | 0 | python,range,xrange | 135,074 | 12 | false | 0 | 0 | You should favour range() over xrange() only when you need an actual list. For instance, when you want to modify the list returned by range(), or when you wish to slice it. For iteration or even just normal indexing, xrange() will work fine (and usually much more efficiently). There is a point where range() is a bit fa... | 4 | 462 | 0 | Why or why not? | Should you always favor xrange() over range()? | 1 | 0 | 0 | 213,342 |
135,169 | 2008-09-25T18:46:00.000 | 1 | 0 | 0 | 1 | python,django,google-app-engine,web-applications | 139,634 | 7 | false | 1 | 0 | If you're app solely relies on Django, then App Engine is a good bet. However, if you ever need to add C-enhanced libraries, you're up a creek. App Engine doesn't support things like PIL or ReportLab, which use C to speed up processing times. I'm only mentioning this because you may want to use C to speed up some of... | 4 | 7 | 0 | I'm building a Lifestreaming app that will involve pulling down lots of feeds for lots of users, and performing data-mining, and machine learning algorithms on the results. GAE's load balanced and scalable hosting sounds like a good fit for a system that could eventually be moving around a LOT of data, but it's lack of... | Is Google App Engine a worthy platform for a Lifestreaming app? | 0.028564 | 0 | 0 | 1,087 |
135,169 | 2008-09-25T18:46:00.000 | 0 | 0 | 0 | 1 | python,django,google-app-engine,web-applications | 135,223 | 7 | false | 1 | 0 | Pulling feeds or doing calculations won't be a problem. But you'll soon have to pay for your account. App engine includes Django, except you'll need to work with some adaptors for the model part. It will surely save you from maintenance headaches. | 4 | 7 | 0 | I'm building a Lifestreaming app that will involve pulling down lots of feeds for lots of users, and performing data-mining, and machine learning algorithms on the results. GAE's load balanced and scalable hosting sounds like a good fit for a system that could eventually be moving around a LOT of data, but it's lack of... | Is Google App Engine a worthy platform for a Lifestreaming app? | 0 | 0 | 0 | 1,087 |
135,169 | 2008-09-25T18:46:00.000 | 0 | 0 | 0 | 1 | python,django,google-app-engine,web-applications | 135,201 | 7 | false | 1 | 0 | No. If you need to pull lots of things down, App Engine isn't going to work so well. You can use it as a front end by putting your data in their store after doing your offline preprocessing, but you can't do much in the ~1 second time you have per request without doing some really crazy things.
Your app would likely be... | 4 | 7 | 0 | I'm building a Lifestreaming app that will involve pulling down lots of feeds for lots of users, and performing data-mining, and machine learning algorithms on the results. GAE's load balanced and scalable hosting sounds like a good fit for a system that could eventually be moving around a LOT of data, but it's lack of... | Is Google App Engine a worthy platform for a Lifestreaming app? | 0 | 0 | 0 | 1,087 |
135,169 | 2008-09-25T18:46:00.000 | 3 | 0 | 0 | 1 | python,django,google-app-engine,web-applications | 135,199 | 7 | false | 1 | 0 | It might change when they offer paid plans, but as it stands, App Engine is not good for CPU intensive apps. It is designed to scale to handle a large number of requests, not necessarily a large amount of calculation per request. I am running into this issue with fairly minor calculations, and I fear I may have to st... | 4 | 7 | 0 | I'm building a Lifestreaming app that will involve pulling down lots of feeds for lots of users, and performing data-mining, and machine learning algorithms on the results. GAE's load balanced and scalable hosting sounds like a good fit for a system that could eventually be moving around a LOT of data, but it's lack of... | Is Google App Engine a worthy platform for a Lifestreaming app? | 0.085505 | 0 | 0 | 1,087 |
135,834 | 2008-09-25T20:29:00.000 | 70 | 0 | 0 | 0 | python,c++,swig,ctypes,ffi | 135,966 | 10 | true | 0 | 0 | SWIG generates (rather ugly) C or C++ code. It is straightforward to use for simple functions (things that can be translated directly) and reasonably easy to use for more complex functions (such as functions with output parameters that need an extra translation step to represent in Python.) For more powerful interfacin... | 6 | 61 | 0 | In python, under what circumstances is SWIG a better choice than ctypes for calling entry points in shared libraries? Let's assume you don't already have the SWIG interface file(s). What are the performance metrics of the two? | Python: SWIG vs ctypes | 1.2 | 0 | 0 | 25,826 |
135,834 | 2008-09-25T20:29:00.000 | 3 | 0 | 0 | 0 | python,c++,swig,ctypes,ffi | 5,113,986 | 10 | false | 0 | 0 | Something to keep in mind is that SWIG targets only the CPython implementation. Since ctypes is also supported by the PyPy and IronPython implementations it may be worth writing your modules with ctypes for compatibility with the wider Python ecosystem. | 6 | 61 | 0 | In python, under what circumstances is SWIG a better choice than ctypes for calling entry points in shared libraries? Let's assume you don't already have the SWIG interface file(s). What are the performance metrics of the two? | Python: SWIG vs ctypes | 0.059928 | 0 | 0 | 25,826 |
135,834 | 2008-09-25T20:29:00.000 | 5 | 0 | 0 | 0 | python,c++,swig,ctypes,ffi | 6,936,927 | 10 | false | 0 | 0 | Just wanted to add a few more considerations that I didn't see mentioned yet.
[EDIT: Ooops, didn't see Mike Steder's answer]
If you want to try using a non Cpython implementation (like PyPy, IronPython or Jython), then ctypes is about the only way to go. PyPy doesn't allow writing C-extensions, so that rules out pyrex... | 6 | 61 | 0 | In python, under what circumstances is SWIG a better choice than ctypes for calling entry points in shared libraries? Let's assume you don't already have the SWIG interface file(s). What are the performance metrics of the two? | Python: SWIG vs ctypes | 0.099668 | 0 | 0 | 25,826 |
135,834 | 2008-09-25T20:29:00.000 | 7 | 0 | 0 | 0 | python,c++,swig,ctypes,ffi | 136,232 | 10 | false | 0 | 0 | ctypes is great, but does not handle C++ classes. I've also found ctypes is about 10% slower than a direct C binding, but that will highly depend on what you are calling.
If you are going to go with ctypes, definitely check out the Pyglet and Pyopengl projects, that have massive examples of ctype bindings. | 6 | 61 | 0 | In python, under what circumstances is SWIG a better choice than ctypes for calling entry points in shared libraries? Let's assume you don't already have the SWIG interface file(s). What are the performance metrics of the two? | Python: SWIG vs ctypes | 1 | 0 | 0 | 25,826 |
135,834 | 2008-09-25T20:29:00.000 | 11 | 0 | 0 | 0 | python,c++,swig,ctypes,ffi | 463,848 | 10 | false | 0 | 0 | In my experience, ctypes does have a big disadvantage: when something goes wrong (and it invariably will for any complex interfaces), it's a hell to debug.
The problem is that a big part of your stack is obscured by ctypes/ffi magic and there is no easy way to determine how did you get to a particular point and why par... | 6 | 61 | 0 | In python, under what circumstances is SWIG a better choice than ctypes for calling entry points in shared libraries? Let's assume you don't already have the SWIG interface file(s). What are the performance metrics of the two? | Python: SWIG vs ctypes | 1 | 0 | 0 | 25,826 |
135,834 | 2008-09-25T20:29:00.000 | 1 | 0 | 0 | 0 | python,c++,swig,ctypes,ffi | 16,795,658 | 10 | false | 0 | 0 | I have found SWIG to be be a little bloated in its approach (in general, not just Python) and difficult to implement without having to cross the sore point of writing Python code with an explicit mindset to be SWIG friendly, rather than writing clean well-written Python code. It is, IMHO, a much more straightforward p... | 6 | 61 | 0 | In python, under what circumstances is SWIG a better choice than ctypes for calling entry points in shared libraries? Let's assume you don't already have the SWIG interface file(s). What are the performance metrics of the two? | Python: SWIG vs ctypes | 0.019997 | 0 | 0 | 25,826 |
136,069 | 2008-09-25T20:59:00.000 | 2 | 1 | 0 | 0 | python,frameworks | 138,888 | 8 | false | 1 | 0 | Go for a framework. Basic stuffs like session handling are a nightmare if you don't use a one because Python is not web specialized like PHP.
If you think django is too much, you can try a lighter one like the very small but still handy web.py. | 4 | 19 | 0 | I am planning on porting a PHP application over to Python. The application is mostly about data collection and processing. The main application runs as a stand alone command line application. There is a web interface to the application which is basically a very light weight reporting interface.
I did not use a fra... | Python web development - with or without a framework | 0.049958 | 0 | 0 | 7,200 |
136,069 | 2008-09-25T20:59:00.000 | 0 | 1 | 0 | 0 | python,frameworks | 136,166 | 8 | false | 1 | 0 | It depends on the way you are going to distribute your application.
If it will only be used internally, go for django. It's a joy to work with it.
However, django really falls short at the distribution-task; django-applications are a pain to set up. | 4 | 19 | 0 | I am planning on porting a PHP application over to Python. The application is mostly about data collection and processing. The main application runs as a stand alone command line application. There is a web interface to the application which is basically a very light weight reporting interface.
I did not use a fra... | Python web development - with or without a framework | 0 | 0 | 0 | 7,200 |
136,069 | 2008-09-25T20:59:00.000 | 2 | 1 | 0 | 0 | python,frameworks | 136,683 | 8 | false | 1 | 0 | Django makes it possible to whip out a website rapidly, that's for sure. You don't need to be a Python master to use it, and since it's very pythonic in it's design, and there is not really any "magic" going on, it will help you learn Python along the way.
Start with the examples, check out some django screencasts from... | 4 | 19 | 0 | I am planning on porting a PHP application over to Python. The application is mostly about data collection and processing. The main application runs as a stand alone command line application. There is a web interface to the application which is basically a very light weight reporting interface.
I did not use a fra... | Python web development - with or without a framework | 0.049958 | 0 | 0 | 7,200 |
136,069 | 2008-09-25T20:59:00.000 | 4 | 1 | 0 | 0 | python,frameworks | 136,152 | 8 | false | 1 | 0 | Depends on the size of the project. If you had only a few previous php-scripts which called your stand alone application then I'd probably go for a cgi-app.
If you have use for databases, url rewriting, templating, user management and such, then using a framework is a good idea.
And of course, before you port it, consi... | 4 | 19 | 0 | I am planning on porting a PHP application over to Python. The application is mostly about data collection and processing. The main application runs as a stand alone command line application. There is a web interface to the application which is basically a very light weight reporting interface.
I did not use a fra... | Python web development - with or without a framework | 0.099668 | 0 | 0 | 7,200 |
136,207 | 2008-09-25T21:18:00.000 | 0 | 1 | 1 | 0 | python,code-reuse | 48,569,865 | 3 | false | 0 | 0 | I store it all offline in a logical directory structure, with commonly used modules grouped as utilities. This means it's easier to control which versions I publish, and manage. I also automate the build process to interpret the logical directory structure. | 2 | 9 | 0 | I write tons of python scripts, and I find myself reusing lots code that I've written for other projects. My solution has been to make sure the code is separated into logical modules/packages (this one's a given). I then make them setuptools-aware and publish them on PyPI. This allows my other scripts to always have th... | How do you manage your custom modules? | 0 | 0 | 0 | 344 |
136,207 | 2008-09-25T21:18:00.000 | 1 | 1 | 1 | 0 | python,code-reuse | 137,291 | 3 | false | 0 | 0 | What kind of modules are we talking about here? If you're planning on distributing your projects to other python developers, setuptools is great. But it's usually not a very good way to distribute apps to end users. Your best bet in the latter case is to tailor your packaging to the platforms you're distributing it ... | 2 | 9 | 0 | I write tons of python scripts, and I find myself reusing lots code that I've written for other projects. My solution has been to make sure the code is separated into logical modules/packages (this one's a given). I then make them setuptools-aware and publish them on PyPI. This allows my other scripts to always have th... | How do you manage your custom modules? | 0.066568 | 0 | 0 | 344 |
136,734 | 2008-09-25T22:58:00.000 | 0 | 1 | 0 | 0 | python,keypress | 66,835,510 | 11 | false | 0 | 0 | You can use pyautogui module which can be used for automatically moving the mouse and for pressing a key. It can also be used for some GUI(very basic).
You can do the following :-
import pyautogui
pyautogui.press('A') # presses the 'A' key
If you want to do it 1000 times, then you can use a while loop
Hope this is help... | 1 | 36 | 0 | Is it possible to make it appear to a system that a key was pressed, for example I need to make A key be pressed thousands of times, and it is much to time consuming to do it manually, I would like to write something to do it for me, and the only thing I know well enough is Python.
A better way to put it, I need to em... | Key Presses in Python | 0 | 0 | 0 | 186,710 |
138,521 | 2008-09-26T09:51:00.000 | 3 | 0 | 1 | 0 | python,c,linker,compilation | 138,554 | 10 | false | 0 | 0 | Jython has a compiler targeting JVM bytecode. The bytecode is fully dynamic, just like the Python language itself! Very cool. (Yes, as Greg Hewgill's answer alludes, the bytecode does use the Jython runtime, and so the Jython jar file must be distributed with your app.) | 2 | 147 | 0 | How feasible would it be to compile Python (possibly via an intermediate C representation) into machine code?
Presumably it would need to link to a Python runtime library, and any parts of the Python standard library which were Python themselves would need to be compiled (and linked in) too.
Also, you would need to bun... | Is it feasible to compile Python to machine code? | 0.059928 | 0 | 0 | 102,301 |
138,521 | 2008-09-26T09:51:00.000 | 2 | 0 | 1 | 0 | python,c,linker,compilation | 138,605 | 10 | false | 0 | 0 | The answer is "Yes, it is possible". You could take Python code and attempt to compile it into the equivalent C code using the CPython API. In fact, there used to be a Python2C project that did just that, but I haven't heard about it in many years (back in the Python 1.5 days is when I last saw it.)
You could attempt t... | 2 | 147 | 0 | How feasible would it be to compile Python (possibly via an intermediate C representation) into machine code?
Presumably it would need to link to a Python runtime library, and any parts of the Python standard library which were Python themselves would need to be compiled (and linked in) too.
Also, you would need to bun... | Is it feasible to compile Python to machine code? | 0.039979 | 0 | 0 | 102,301 |
139,005 | 2008-09-26T12:05:00.000 | 1 | 0 | 0 | 0 | python,pyqt | 139,056 | 3 | true | 0 | 1 | It will come down to you using the QScrollArea, it is a widget that implements showing something that is larger than the available space. You will not need to use QScrollBar directly. I don't have a PyQt example but there is a C++ example in the QT distribution it is called the "Image Viewer". The object hierarchy will... | 1 | 0 | 0 | Dear Stacktoverflow, can you show me an example of how to use a QScrollBar? Thanks. | PyQt - QScrollBar | 1.2 | 0 | 0 | 3,106 |
139,212 | 2008-09-26T12:45:00.000 | 0 | 1 | 0 | 0 | python,web-services,cookies,soappy,zsi | 148,379 | 2 | false | 0 | 0 | Additionally, the Binding class also allows any header to be added. So I figured out that I can just add a "Cookie" header for each cookie I need to add. This worked well for the code generated by wsdl2py, just adding the cookies right after the binding is formed in the SOAP client class. Adding a parameter to the g... | 1 | 2 | 0 | I've added cookie support to SOAPpy by overriding HTTPTransport. I need functionality beyond that of SOAPpy, so I was planning on moving to ZSI, but I can't figure out how to put the Cookies on the ZSI posts made to the service. Without these cookies, the server will think it is an unauthorized request and it will fa... | Adding Cookie to ZSI Posts | 0 | 0 | 1 | 526 |
140,026 | 2008-09-26T14:56:00.000 | 1 | 0 | 0 | 0 | python,database,algorithm,dsl | 141,872 | 9 | false | 0 | 0 | "implement a Domain Specific Language"
"nobody is going to want to install a server that downloads and executes arbitrary Python code at runtime"
I want a DSL but I don't want Python to be that DSL. Okay. How will you execute this DSL? What runtime is acceptable if not Python?
What if I have a C program that happens... | 6 | 5 | 0 | I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what ro... | Writing a Domain Specific Language for selecting rows from a table | 0.022219 | 1 | 0 | 2,773 |
140,026 | 2008-09-26T14:56:00.000 | 0 | 0 | 0 | 0 | python,database,algorithm,dsl | 140,066 | 9 | false | 0 | 0 | Why not create a language that when it "compiles" it generates SQL or whatever query language your datastore requires ?
You would be basically creating an abstraction over your persistence layer. | 6 | 5 | 0 | I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what ro... | Writing a Domain Specific Language for selecting rows from a table | 0 | 1 | 0 | 2,773 |
140,026 | 2008-09-26T14:56:00.000 | 0 | 0 | 0 | 0 | python,database,algorithm,dsl | 140,304 | 9 | false | 0 | 0 | It really sounds like SQL, but perhaps it's worth to try using SQLite if you want to keep it simple? | 6 | 5 | 0 | I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what ro... | Writing a Domain Specific Language for selecting rows from a table | 0 | 1 | 0 | 2,773 |
140,026 | 2008-09-26T14:56:00.000 | 0 | 0 | 0 | 0 | python,database,algorithm,dsl | 140,091 | 9 | false | 0 | 0 | You mentioned Python. Why not use Python? If someone can "type in" an expression in your DSL, they can type in Python.
You'll need some rules on structure of the expression, but that's a lot easier than implementing something new. | 6 | 5 | 0 | I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what ro... | Writing a Domain Specific Language for selecting rows from a table | 0 | 1 | 0 | 2,773 |
140,026 | 2008-09-26T14:56:00.000 | 0 | 0 | 0 | 0 | python,database,algorithm,dsl | 140,228 | 9 | false | 0 | 0 | You said nobody is going to want to install a server that downloads and executes arbitrary code at runtime. However, that is exactly what your DSL will do (eventually) so there probably isn't that much of a difference. Unless you're doing something very specific with the data then I don't think a DSL will buy you tha... | 6 | 5 | 0 | I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what ro... | Writing a Domain Specific Language for selecting rows from a table | 0 | 1 | 0 | 2,773 |
140,026 | 2008-09-26T14:56:00.000 | 1 | 0 | 0 | 0 | python,database,algorithm,dsl | 140,275 | 9 | false | 0 | 0 | I think we're going to need a bit more information here. Let me know if any of the following is based on incorrect assumptions.
First of all, as you pointed out yourself, there already exists a DSL for selecting rows from arbitrary tables-- it is called "SQL". Since you don't want to reinvent SQL, I'm assuming that y... | 6 | 5 | 0 | I'm writing a server that I expect to be run by many different people, not all of whom I will have direct contact with. The servers will communicate with each other in a cluster. Part of the server's functionality involves selecting a small subset of rows from a potentially very large table. The exact choice of what ro... | Writing a Domain Specific Language for selecting rows from a table | 0.022219 | 1 | 0 | 2,773 |
140,758 | 2008-09-26T17:20:00.000 | 2 | 0 | 1 | 0 | java,python,file-traversal | 140,822 | 9 | false | 1 | 0 | Use os.path.walk if you want subdirectories as well.
walk(top, func, arg)
Directory tree walk with callback function.
For each directory in the directory tree rooted at top (including top
itself, but excluding '.' and '..'), call func(arg, dirname, fnames).
dirname is the name of the d... | 2 | 10 | 0 | In Java you can do File.listFiles() and receive all of the files in a directory. You can then easily recurse through directory trees.
Is there an analogous way to do this in Python? | Looking for File Traversal Functions in Python that are Like Java's | 0.044415 | 0 | 0 | 9,026 |
140,758 | 2008-09-26T17:20:00.000 | 2 | 0 | 1 | 0 | java,python,file-traversal | 141,277 | 9 | false | 1 | 0 | I'd recommend against os.path.walk as it is being removed in Python 3.0. os.walk is simpler, anyway, or at least I find it simpler. | 2 | 10 | 0 | In Java you can do File.listFiles() and receive all of the files in a directory. You can then easily recurse through directory trees.
Is there an analogous way to do this in Python? | Looking for File Traversal Functions in Python that are Like Java's | 0.044415 | 0 | 0 | 9,026 |
141,647 | 2008-09-26T20:07:00.000 | 0 | 0 | 0 | 0 | python,sockets,mobile | 142,502 | 4 | false | 0 | 1 | If the code is working in the interactive interpreter when typed, but not when run directly then I would suggest seeing if your code has reached a deadlock on the socket, for example both ends are waiting for data from the other. When typing into the interactive interpreter there is a longer delay between the executio... | 3 | 1 | 0 | I've written code for communication between my phone and comp thru TCP sockets. When I type out the code line by line in the interactive console it works fine. However, when i try running the script directly through filebrowser.py it just wont work. I'm using Nokia N95. Is there anyway I can run this script directly wi... | Socket programming for mobile phones in Python | 0 | 0 | 0 | 1,588 |
141,647 | 2008-09-26T20:07:00.000 | 0 | 0 | 0 | 0 | python,sockets,mobile | 215,001 | 4 | false | 0 | 1 | Don't you have the "Run script" menu in your interactive Python shell? | 3 | 1 | 0 | I've written code for communication between my phone and comp thru TCP sockets. When I type out the code line by line in the interactive console it works fine. However, when i try running the script directly through filebrowser.py it just wont work. I'm using Nokia N95. Is there anyway I can run this script directly wi... | Socket programming for mobile phones in Python | 0 | 0 | 0 | 1,588 |
141,647 | 2008-09-26T20:07:00.000 | 0 | 0 | 0 | 0 | python,sockets,mobile | 142,786 | 4 | false | 0 | 1 | Well, it doesn't appear to be a deadlock situation. It throws an error saying remote server refused connection. However, like I said before, if i type the very same code into the interactive interpreter it works just fine. I'm wondering if the error is because the script is run through filebrowser.py? | 3 | 1 | 0 | I've written code for communication between my phone and comp thru TCP sockets. When I type out the code line by line in the interactive console it works fine. However, when i try running the script directly through filebrowser.py it just wont work. I'm using Nokia N95. Is there anyway I can run this script directly wi... | Socket programming for mobile phones in Python | 0 | 0 | 0 | 1,588 |
142,545 | 2008-09-26T23:59:00.000 | 28 | 0 | 1 | 0 | python,module,global | 15,035,172 | 12 | false | 0 | 0 | I believe that there are plenty of circumstances in which it does make sense and it simplifies programming to have some globals that are known across several (tightly coupled) modules. In this spirit, I would like to elaborate a bit on the idea of having a module of globals which is imported by those modules which nee... | 2 | 127 | 0 | The __debug__ variable is handy in part because it affects every module. If I want to create another variable that works the same way, how would I do it?
The variable (let's be original and call it 'foo') doesn't have to be truly global, in the sense that if I change foo in one module, it is updated in others. I'd be f... | How to make a cross-module variable? | 1 | 0 | 0 | 177,508 |
142,545 | 2008-09-26T23:59:00.000 | 5 | 0 | 1 | 0 | python,module,global | 3,911,089 | 12 | false | 0 | 0 | You can already do this with module-level variables. Modules are the same no matter what module they're being imported from. So you can make the variable a module-level variable in whatever module it makes sense to put it in, and access it or assign to it from other modules. It would be better to call a function to ... | 2 | 127 | 0 | The __debug__ variable is handy in part because it affects every module. If I want to create another variable that works the same way, how would I do it?
The variable (let's be original and call it 'foo') doesn't have to be truly global, in the sense that if I change foo in one module, it is updated in others. I'd be f... | How to make a cross-module variable? | 0.083141 | 0 | 0 | 177,508 |
142,812 | 2008-09-27T02:47:00.000 | 7 | 0 | 1 | 0 | python,bit-fields,bitarray | 143,643 | 12 | false | 0 | 0 | I use the binary bit-wise operators !, &, |, ^, >>, and <<. They work really well and are implemented directly in the underlying C, which is usually directly on the underlying hardware. | 1 | 54 | 0 | I need a compact representation of an array of booleans, does Python have a builtin bitfield type or will I need to find an alternate solution? | Does Python have a bitfield type? | 1 | 0 | 0 | 62,846 |
142,844 | 2008-09-27T03:02:00.000 | 2 | 0 | 0 | 1 | python,windows,drag-and-drop,windows-explorer | 21,840,490 | 8 | false | 0 | 0 | Create a shortcut of the file. In case you don't have python open .py files by default, go into the properties of the shortcut and edit the target of the shortcut to include the python version you're using. For example:
Target: C:\Python26\python.exe < shortcut target path>
I'm posting this because I didn't want to ... | 3 | 59 | 0 | I would like to drag and drop my data file onto a Python script and have it process the file and generate output. The Python script accepts the name of the data file as a command-line parameter, but Windows Explorer doesn't allow the script to be a drop target.
Is there some kind of configuration that needs to be done ... | Drag and drop onto Python script in Windows Explorer | 0.049958 | 0 | 0 | 59,279 |
142,844 | 2008-09-27T03:02:00.000 | 2 | 0 | 0 | 1 | python,windows,drag-and-drop,windows-explorer | 53,586,688 | 8 | false | 0 | 0 | 1). create shortcut of .py
2). right click -> properties
3). prefix "Target:" with "python" so it runs the .py as an argument into the python command
or
1). create a .bat
2). python some.py %*
these shortcut versions are simplest for me to do what i'm doing
otherwise i'd convert it to a .exe, but would rather just use ... | 3 | 59 | 0 | I would like to drag and drop my data file onto a Python script and have it process the file and generate output. The Python script accepts the name of the data file as a command-line parameter, but Windows Explorer doesn't allow the script to be a drop target.
Is there some kind of configuration that needs to be done ... | Drag and drop onto Python script in Windows Explorer | 0.049958 | 0 | 0 | 59,279 |
142,844 | 2008-09-27T03:02:00.000 | 6 | 0 | 0 | 1 | python,windows,drag-and-drop,windows-explorer | 4,486,506 | 8 | false | 0 | 0 | Try using py2exe. Use py2exe to convert your python script into a windows executable. You should then be able to drag and drop input files to your script in Windows Explorer. You should also be able to create a shortcut on your desktop and drop input files onto it. And if your python script can take a file list you... | 3 | 59 | 0 | I would like to drag and drop my data file onto a Python script and have it process the file and generate output. The Python script accepts the name of the data file as a command-line parameter, but Windows Explorer doesn't allow the script to be a drop target.
Is there some kind of configuration that needs to be done ... | Drag and drop onto Python script in Windows Explorer | 1 | 0 | 0 | 59,279 |
143,515 | 2008-09-27T12:12:00.000 | 1 | 0 | 0 | 1 | java,python,c,ocsp | 143,996 | 3 | true | 1 | 0 | Have you check pyOpenSSL.. am sure openssl supports ocsp and python binding may support it | 1 | 3 | 0 | Going back to my previous question on OCSP, does anybody know of "reliable" OCSP libraries for Python, Java and C?
I need "client" OCSP functionality, as I'll be checking the status of Certs against an OCSP responder, so responder functionality is not that important.
Thanks | OCSP libraries for python / java / c? | 1.2 | 0 | 0 | 2,998 |
143,714 | 2008-09-27T14:39:00.000 | 1 | 0 | 1 | 0 | python,string,quotes,double-quotes | 143,726 | 9 | false | 0 | 0 | There are 3 ways you can qoute strings in python:
"string"
'string'
"""
string
string
"""
they all produce the same result. | 1 | 71 | 0 | In PHP, a string enclosed in "double quotes" will be parsed for variables to replace whereas a string enclosed in 'single quotes' will not. In Python, does this also apply? | Is there any difference between "string" and 'string' in Python? | 0.022219 | 0 | 0 | 66,616 |
144,448 | 2008-09-27T20:55:00.000 | 0 | 0 | 0 | 0 | python,postgresql,module | 1,579,851 | 6 | false | 0 | 0 | I uses only psycopg2 and had no problems with that. | 2 | 28 | 0 | I've seen a number of postgresql modules for python like pygresql, pypgsql, psyco. Most of them are Python DB API 2.0 compliant, some are not being actively developed anymore.
Which module do you recommend? Why? | Python PostgreSQL modules. Which is best? | 0 | 1 | 0 | 15,582 |
144,448 | 2008-09-27T20:55:00.000 | 0 | 0 | 0 | 0 | python,postgresql,module | 145,801 | 6 | false | 0 | 0 | Psycopg1 is known for better performance in heavilyy threaded environments (like web applications) than Psycopg2, although not maintained. Both are well written and rock solid, I'd choose one of these two depending on use case. | 2 | 28 | 0 | I've seen a number of postgresql modules for python like pygresql, pypgsql, psyco. Most of them are Python DB API 2.0 compliant, some are not being actively developed anymore.
Which module do you recommend? Why? | Python PostgreSQL modules. Which is best? | 0 | 1 | 0 | 15,582 |
145,155 | 2008-09-28T03:39:00.000 | 2 | 0 | 0 | 0 | python,user-interface | 145,174 | 3 | false | 0 | 1 | In wxPython there's a plethora of ready-made list and tree controls (CustomTreeCtrl, TreeListCtrl, and others), a mixture of which you can use to create a simple explorer in minutes. The wxPython demo even has a few relevant examples (see the demo of MVCTree). | 1 | 1 | 0 | I am making a Python gui project that needs to duplicate the look of a Windows gui environment (ie Explorer). I have my own custom icons to draw but they should be selectable by the same methods as usual; click, ctrl-click, drag box etc. Are any of the gui toolkits going to help with this or will I have to implement ... | Something like Explorer's icon grid view in a Python GUI | 0.132549 | 0 | 0 | 547 |
145,191 | 2008-09-28T04:06:00.000 | 1 | 1 | 1 | 0 | .net,performance,ironpython | 145,200 | 4 | false | 0 | 0 | Currently IronRuby is pretty slow in most regards. It's definitely slower than MRI (Matz' Ruby Implementation) overall, though in some places they're faster.
IronRuby does have the potential to be much faster, though I doubt they'll ever get near C# in terms of speed. In most cases it just doesn't matter. A database... | 3 | 8 | 0 | I understand that IronPython is an implementation of Python on the .NET platform just like IronRuby is an implementation of Ruby and F# is more or less OCaml.
What I can't seem to grasp is whether these languages perform closer to their "ancestors" or closer to something like C# in terms of speed. For example, is Ir... | Dynamic .NET language performance? | 0.049958 | 0 | 0 | 1,684 |
145,191 | 2008-09-28T04:06:00.000 | 9 | 1 | 1 | 0 | .net,performance,ironpython | 145,195 | 4 | true | 0 | 0 | IronPython and IronRuby are built on top of the DLR -- dynamic language runtime -- and are compiled to CIL (the bytecode used by .NET) on the fly. They're slower than C# but faaaaaaar faster than their non-.NET counterparts. There aren't any decent benchmarks out there, to my knowledge, but you'll see the difference. | 3 | 8 | 0 | I understand that IronPython is an implementation of Python on the .NET platform just like IronRuby is an implementation of Ruby and F# is more or less OCaml.
What I can't seem to grasp is whether these languages perform closer to their "ancestors" or closer to something like C# in terms of speed. For example, is Ir... | Dynamic .NET language performance? | 1.2 | 0 | 0 | 1,684 |
145,191 | 2008-09-28T04:06:00.000 | 7 | 1 | 1 | 0 | .net,performance,ironpython | 145,300 | 4 | false | 0 | 0 | IronPython is actually the fastest Python implementation out there. For some definition of "fastest", at least: the startup overhead of the CLR, for example, is huge compared to CPython. Also, the optimizing compiler IronPython has, really only makes sense, when code is executed multiple times.
IronRuby has the potenti... | 3 | 8 | 0 | I understand that IronPython is an implementation of Python on the .NET platform just like IronRuby is an implementation of Ruby and F# is more or less OCaml.
What I can't seem to grasp is whether these languages perform closer to their "ancestors" or closer to something like C# in terms of speed. For example, is Ir... | Dynamic .NET language performance? | 1 | 0 | 0 | 1,684 |
145,607 | 2008-09-28T10:12:00.000 | 0 | 0 | 1 | 0 | c#,python,diff | 1,937,776 | 11 | false | 0 | 0 | One method I've employed for a different functionality, to calculate how much data was new in a modified file, could perhaps work for you as well.
I have a diff/patch implementation C# that allows me to take two files, presumably old and new version of the same file, and calculate the "difference", but not in the usual... | 1 | 43 | 0 | I need an algorithm that can compare two text files and highlight their difference and ( even better!) can compute their difference in a meaningful way (like two similar files should have a similarity score higher than two dissimilar files, with the word "similar" defined in the normal terms). It sounds easy to implem... | Text difference algorithm | 0 | 0 | 0 | 19,086 |
145,894 | 2008-09-28T14:02:00.000 | 1 | 0 | 0 | 1 | macos,wxpython,wxwidgets | 25,845,284 | 4 | false | 0 | 1 | As of wxPython 2.9.2.0 wx.TaskBarIcon will create a menubar icon now instead on OSX, so long as you call SetIcon. | 1 | 6 | 0 | I could not find any pointers on how to create a menubar icon on OSX using wx. I originally thought that the wxTaskBarIcon class would do, but it actually creates an icon on the Dock. On Windows, wxTaskBarIcon creates a Systray icon and associated menu, and I would think that on mac osx it would create a menubar icon, ... | how to set a menubar icon on mac osx using wx | 0.049958 | 0 | 0 | 4,972 |
147,650 | 2008-09-29T05:41:00.000 | 10 | 1 | 0 | 1 | python,eclipse,pylons,pydev,pyramid | 147,768 | 7 | true | 1 | 0 | Create a new launch configuration (Python Run)
Main tab
Use paster-script.py as main module (you can find it in the Scripts sub-directory in your python installation directory)
Don't forget to add the root folder of your application in the PYTHONPATH zone
Arguments
Set the base directory to the root folder also.
As Pro... | 4 | 11 | 0 | I have Eclipse setup with PyDev and love being able to debug my scripts/apps. I've just started playing around with Pylons and was wondering if there is a way to start up the paster server through Eclipse so I can debug my webapp? | Debug Pylons application through Eclipse | 1.2 | 0 | 0 | 5,139 |
147,650 | 2008-09-29T05:41:00.000 | 2 | 1 | 0 | 1 | python,eclipse,pylons,pydev,pyramid | 3,817,880 | 7 | false | 1 | 0 | I was able to get --reload working by changing the 'Working directory' in the arguments tab to not use default (i.e. select 'Other'->File System->'Root of your Pylons' app where development.ini is stored. | 4 | 11 | 0 | I have Eclipse setup with PyDev and love being able to debug my scripts/apps. I've just started playing around with Pylons and was wondering if there is a way to start up the paster server through Eclipse so I can debug my webapp? | Debug Pylons application through Eclipse | 0.057081 | 0 | 0 | 5,139 |
147,650 | 2008-09-29T05:41:00.000 | 1 | 1 | 0 | 1 | python,eclipse,pylons,pydev,pyramid | 2,958,194 | 7 | false | 1 | 0 | On linux that will probably be /usr/bin/paster or /usr/local/bin/paster for paste script, and for arguments i have: serve ${workspace_loc}${project_path}/development.ini | 4 | 11 | 0 | I have Eclipse setup with PyDev and love being able to debug my scripts/apps. I've just started playing around with Pylons and was wondering if there is a way to start up the paster server through Eclipse so I can debug my webapp? | Debug Pylons application through Eclipse | 0.028564 | 0 | 0 | 5,139 |
147,650 | 2008-09-29T05:41:00.000 | 2 | 1 | 0 | 1 | python,eclipse,pylons,pydev,pyramid | 1,306,122 | 7 | false | 1 | 0 | yanjost has it right, just wanted to add that you need to make sure you do not use the --reload option, this will prevent the debugger from properly attaching itself and cause your breakpoints not to work. Just a little thing I ran in to. | 4 | 11 | 0 | I have Eclipse setup with PyDev and love being able to debug my scripts/apps. I've just started playing around with Pylons and was wondering if there is a way to start up the paster server through Eclipse so I can debug my webapp? | Debug Pylons application through Eclipse | 0.057081 | 0 | 0 | 5,139 |
150,284 | 2008-09-29T19:31:00.000 | 9 | 0 | 1 | 0 | python,pickle | 150,318 | 2 | false | 0 | 0 | __reduce_ex__ is what __reduce__ should have been but never became. __reduce_ex__ works like __reduce__ but the pickle protocol is passed. | 1 | 19 | 1 | I understand that these methods are for pickling/unpickling and have no relation to the reduce built-in function, but what's the difference between the 2 and why do we need both? | What is the difference between __reduce__ and __reduce_ex__? | 1 | 0 | 0 | 9,908 |
152,580 | 2008-09-30T11:00:00.000 | 70 | 1 | 1 | 0 | python,types | 152,592 | 14 | false | 0 | 0 | isinstance(o, str) will return True if o is an str or is of a type that inherits from str.
type(o) is str will return True if and only if o is a str. It will return False if o is of a type that inherits from str. | 2 | 1,624 | 0 | How do I check if an object is of a given type, or if it inherits from a given type?
How do I check if the object o is of type str? | What's the canonical way to check for type in Python? | 1 | 0 | 0 | 1,190,669 |
152,580 | 2008-09-30T11:00:00.000 | 7 | 1 | 1 | 0 | python,types | 153,032 | 14 | false | 0 | 0 | I think the cool thing about using a dynamic language like Python is you really shouldn't have to check something like that.
I would just call the required methods on your object and catch an AttributeError. Later on this will allow you to call your methods with other (seemingly unrelated) objects to accomplish differe... | 2 | 1,624 | 0 | How do I check if an object is of a given type, or if it inherits from a given type?
How do I check if the object o is of type str? | What's the canonical way to check for type in Python? | 1 | 0 | 0 | 1,190,669 |
153,491 | 2008-09-30T15:13:00.000 | 15 | 0 | 0 | 0 | java,python,jython,code-translation | 155,385 | 4 | false | 1 | 0 | Actually, this may or may not be much help but you could write a script which created a Java class for each Python class, including method stubs, placing the Python implementation of the method inside the Javadoc
In fact, this is probably pretty easy to knock up in Python.
I worked for a company which undertook a port ... | 4 | 33 | 0 | Is there a tool out there that can automatically convert Python to Java?
Can Jython do this? | Automated Python to Java translation | 1 | 0 | 0 | 120,780 |
153,491 | 2008-09-30T15:13:00.000 | 8 | 0 | 0 | 0 | java,python,jython,code-translation | 153,535 | 4 | true | 1 | 0 | It may not be an easy problem.
Determining how to map classes defined in Python into types in Java will be a big challange because of differences in each of type binding time. (duck typing vs. compile time binding). | 4 | 33 | 0 | Is there a tool out there that can automatically convert Python to Java?
Can Jython do this? | Automated Python to Java translation | 1.2 | 0 | 0 | 120,780 |
153,491 | 2008-09-30T15:13:00.000 | 1 | 0 | 0 | 0 | java,python,jython,code-translation | 153,530 | 4 | false | 1 | 0 | to clarify your question:
From Python Source code to Java source code? (I don't think so)
.. or from Python source code to Java Bytecode? (Jython does this under the hood) | 4 | 33 | 0 | Is there a tool out there that can automatically convert Python to Java?
Can Jython do this? | Automated Python to Java translation | 0.049958 | 0 | 0 | 120,780 |
153,491 | 2008-09-30T15:13:00.000 | 4 | 0 | 0 | 0 | java,python,jython,code-translation | 989,822 | 4 | false | 1 | 0 | Yes Jython does this, but it may or may not be what you want | 4 | 33 | 0 | Is there a tool out there that can automatically convert Python to Java?
Can Jython do this? | Automated Python to Java translation | 0.197375 | 0 | 0 | 120,780 |
153,773 | 2008-09-30T16:11:00.000 | 2 | 0 | 0 | 0 | python,post,request,header,pylons | 153,822 | 1 | true | 0 | 0 | Receiving data from a POST depends on the web browser sending data along. When the web browser receives a redirect, it does not resend that data along. One solution would be to URL encode the data you want to keep and use that with a GET. In the worst case, you could always add the data you want to keep to the sessi... | 1 | 4 | 0 | I'm trying to redirect/forward a Pylons request. The problem with using redirect_to is that form data gets dropped. I need to keep the POST form data intact as well as all request headers.
Is there a simple way to do this? | What is the preferred way to redirect a request in Pylons without losing form data? | 1.2 | 0 | 1 | 1,415 |
153,956 | 2008-09-30T16:50:00.000 | 0 | 0 | 0 | 0 | python,user-interface,wxpython,distribution,freeze | 153,999 | 7 | false | 0 | 1 | I've used py2Exe myself - it's really easy (at least for small apps). | 1 | 11 | 0 | I need to develop a small-medium sized desktop GUI application, preferably with Python as a language of choice because of time constraints.
What GUI library choices do I have which allow me to redistribute my application standalone, assuming that the users don't have a working Python installation and obviously don't ha... | Python GUI Application redistribution | 0 | 0 | 0 | 5,407 |
154,443 | 2008-09-30T18:55:00.000 | 11 | 0 | 1 | 0 | python | 154,566 | 10 | false | 0 | 0 | In 2.5, theres no way to suppress it, other than measures like not giving users write access to the directory.
In python 2.6 and 3.0 however, there may be a setting in the sys module called "dont_write_bytecode" that can be set to suppress this. This can also be set by passing the "-B" option, or setting the environme... | 2 | 286 | 0 | Can I run the python interpreter without generating the compiled .pyc files? | How to avoid .pyc files? | 1 | 0 | 0 | 134,803 |
154,443 | 2008-09-30T18:55:00.000 | 0 | 0 | 1 | 0 | python | 154,467 | 10 | false | 0 | 0 | As far as I know python will compile all modules you "import". However python will NOT compile a python script run using: "python script.py" (it will however compile any modules that the script imports).
The real questions is why you don't want python to compile the modules? You could probably automate a way of cleanin... | 2 | 286 | 0 | Can I run the python interpreter without generating the compiled .pyc files? | How to avoid .pyc files? | 0 | 0 | 0 | 134,803 |
155,029 | 2008-09-30T20:47:00.000 | 2 | 0 | 0 | 0 | python,sqlalchemy,kinterbasdb | 175,634 | 1 | false | 0 | 1 | I thought I posted my solution already...
Modifying both apps to run under WSGIApplicationGroup ${GLOBAL} in their httpd conf file
and patching sqlalchemy.databases.firebird.py to check if self.dbapi.initialized is True
before calling self.dbapi.init(... was the only way I could manage to get this scenario up and runni... | 1 | 1 | 0 | I'm trying to develop an app using turbogears and sqlalchemy.
There is already an existing app using kinterbasdb directly under mod_wsgi on the same server.
When both apps are used, neither seems to recognize that kinterbasdb is already initialized
Is there something non-obvious I am missing about using sqlalchemy and ... | SQLAlchemy and kinterbasdb in separate apps under mod_wsgi | 0.379949 | 1 | 0 | 270 |
157,313 | 2008-10-01T12:20:00.000 | 2 | 0 | 0 | 0 | python,jython,template-engine | 160,496 | 3 | false | 1 | 0 | Jinja is pretty cool and seems to work on Jython. | 1 | 1 | 0 | Im searching a Template Lib or Template Engine for generating HTML (XML) that runs under Jython (Jython 2.5 Alpha is ok). | Template Lib (Engine) in Python running with Jython | 0.132549 | 0 | 0 | 879 |
157,938 | 2008-10-01T14:37:00.000 | 3 | 0 | 0 | 0 | python,security | 158,180 | 21 | false | 0 | 0 | Your operating system probably provides facilities for encrypting data securely. For instance, on Windows there is DPAPI (data protection API). Why not ask the user for their credentials the first time you run then squirrel them away encrypted for subsequent runs? | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 0.028564 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 68 | 0 | 0 | 0 | python,security | 22,821,470 | 21 | false | 0 | 0 | Here is a simple method:
Create a python module - let's call it peekaboo.py.
In peekaboo.py, include both the password and any code needing that password
Create a compiled version - peekaboo.pyc - by importing this module (via python commandline, etc...).
Now, delete peekaboo.py.
You can now happily import peekabo... | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 1 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 0 | 0 | 0 | 0 | python,security | 157,974 | 21 | false | 0 | 0 | There are several ROT13 utilities written in Python on the 'Net -- just google for them. ROT13 encode the string offline, copy it into the source, decode at point of transmission.But this is really weak protection... | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 0 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 56 | 0 | 0 | 0 | python,security | 158,248 | 21 | false | 0 | 0 | Douglas F Shearer's is the generally approved solution in Unix when you need to specify a password for a remote login.
You add a --password-from-file option to specify the path and read plaintext from a file.
The file can then be in the user's own area protected by the operating system.
It also allows different users t... | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 1 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 19 | 0 | 0 | 0 | python,security | 158,387 | 21 | false | 0 | 0 | The best solution, assuming the username and password can't be given at runtime by the user, is probably a separate source file containing only variable initialization for the username and password that is imported into your main code. This file would only need editing when the credentials change. Otherwise, if you're ... | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 1 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 0 | 0 | 0 | 0 | python,security | 53,049,667 | 21 | false | 0 | 0 | This doesn't precisely answer your question, but it's related. I was going to add as a comment but wasn't allowed.
I've been dealing with this same issue, and we have decided to expose the script to the users using Jenkins. This allows us to store the db credentials in a separate file that is encrypted and secured on ... | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 0 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 1 | 0 | 0 | 0 | python,security | 58,501,148 | 21 | false | 0 | 0 | Why not have a simple xor?
Advantages:
looks like binary data
noone can read it without knowing the key (even if it's a single char)
I get to the point where I recognize simple b64 strings for common words and rot13 as well. Xor would make it much harder. | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 0.009524 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 2 | 0 | 0 | 0 | python,security | 160,053 | 21 | false | 0 | 0 | Place the configuration information in a encrypted config file. Query this info in your code using an key. Place this key in a separate file per environment, and don't store it with your code. | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 0.019045 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 19 | 0 | 0 | 0 | python,security | 158,221 | 21 | false | 0 | 0 | How about importing the username and password from a file external to the script? That way even if someone got hold of the script, they wouldn't automatically get the password. | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 1 | 0 | 0 | 275,164 |
157,938 | 2008-10-01T14:37:00.000 | 4 | 0 | 0 | 0 | python,security | 158,450 | 21 | false | 0 | 0 | This is a pretty common problem. Typically the best you can do is to either
A) create some kind of ceasar cipher function to encode/decode (just not rot13)
or
B) the preferred method is to use an encryption key, within reach of your program, encode/decode the password. In which you can use file protection to protect... | 10 | 162 | 0 | I have got a python script which is creating an ODBC connection. The ODBC connection is generated with a connection string. In this connection string I have to include the username and password for this connection.
Is there an easy way to obscure this password in the file (just that nobody can read the password when ... | Hiding a password in a python script (insecure obfuscation only) | 0.038077 | 0 | 0 | 275,164 |
158,546 | 2008-10-01T16:37:00.000 | 1 | 0 | 1 | 0 | python,boggle | 158,622 | 4 | false | 0 | 0 | Even though it is essentially a singleton at this point, the usual arguments against globals apply. For a pythonic singleton-substitute, look up the "borg" object.
That's really the only difference. Once the dictionary object is created, you are only binding new references as you pass it along unless if you explici... | 2 | 5 | 0 | I'm creating a networked server for a boggle-clone I wrote in python, which accepts users, solves the boards, and scores the player input. The dictionary file I'm using is 1.8MB (the ENABLE2K dictionary), and I need it to be available to several game solver classes. Right now, I have it so that each class iterates th... | Best way to store and use a large text-file in python | 0.049958 | 0 | 0 | 2,322 |
158,546 | 2008-10-01T16:37:00.000 | 0 | 0 | 1 | 0 | python,boggle | 159,341 | 4 | false | 0 | 0 | Depending on what your dict contains, you may be interested in the 'shelve' or 'anydbm' modules. They give you dict-like interfaces (just strings as keys and items for 'anydbm', and strings as keys and any python object as item for 'shelve') but the data is actually in a DBM file (gdbm, ndbm, dbhash, bsddb, depending o... | 2 | 5 | 0 | I'm creating a networked server for a boggle-clone I wrote in python, which accepts users, solves the boards, and scores the player input. The dictionary file I'm using is 1.8MB (the ENABLE2K dictionary), and I need it to be available to several game solver classes. Right now, I have it so that each class iterates th... | Best way to store and use a large text-file in python | 0 | 0 | 0 | 2,322 |
160,834 | 2008-10-02T03:55:00.000 | 3 | 0 | 0 | 1 | python,deployment,build-process | 4,060,962 | 6 | false | 1 | 0 | I always create a develop.py file at the top level of the project, and have also a packages directory with all of the .tar.gz files from PyPI that I want to install, and also included an unpacked copy of virtualenv that is ready to run right from that file. All of this goes into version control. Every developer can s... | 4 | 7 | 0 | I am a member of a team that is about to launch a beta of a python (Django specifically) based web site and accompanying suite of backend tools. The team itself has doubled in size from 2 to 4 over the past few weeks and we expect continued growth for the next couple of months at least. One issue that has started to ... | Are there any other good alternatives to zc.buildout and/or virtualenv for installing non-python dependencies? | 0.099668 | 0 | 0 | 2,576 |
160,834 | 2008-10-02T03:55:00.000 | 4 | 0 | 0 | 1 | python,deployment,build-process | 185,505 | 6 | false | 1 | 0 | Setuptools may be capable of more of what you're looking for than you realize -- if you need a custom version of lxml to work correctly on MacOS X, for instance, you can put a URL to an appropriate egg inside your setup.py and have setuptools download and install that inside your developers' environments as necessary; ... | 4 | 7 | 0 | I am a member of a team that is about to launch a beta of a python (Django specifically) based web site and accompanying suite of backend tools. The team itself has doubled in size from 2 to 4 over the past few weeks and we expect continued growth for the next couple of months at least. One issue that has started to ... | Are there any other good alternatives to zc.buildout and/or virtualenv for installing non-python dependencies? | 0.132549 | 0 | 0 | 2,576 |
160,834 | 2008-10-02T03:55:00.000 | 0 | 0 | 0 | 1 | python,deployment,build-process | 177,109 | 6 | false | 1 | 0 | You might consider creating virtual machine appliances with whatever production OS you are running, and all of the software dependencies pre-built. Code can be edited either remotely, or with a shared folder. It worked pretty well for me in a past life that had a fairly complicated development environment. | 4 | 7 | 0 | I am a member of a team that is about to launch a beta of a python (Django specifically) based web site and accompanying suite of backend tools. The team itself has doubled in size from 2 to 4 over the past few weeks and we expect continued growth for the next couple of months at least. One issue that has started to ... | Are there any other good alternatives to zc.buildout and/or virtualenv for installing non-python dependencies? | 0 | 0 | 0 | 2,576 |
160,834 | 2008-10-02T03:55:00.000 | 0 | 0 | 0 | 1 | python,deployment,build-process | 160,872 | 6 | false | 1 | 0 | Basically, you're looking for a cross-platform software/package installer (on the lines of apt-get/yum/etc.) I'm not sure something like that exists?
An alternative might be specifying the list of packages that need to be installed via the OS-specific package management system such as Fink or DarwinPorts for Mac OS X a... | 4 | 7 | 0 | I am a member of a team that is about to launch a beta of a python (Django specifically) based web site and accompanying suite of backend tools. The team itself has doubled in size from 2 to 4 over the past few weeks and we expect continued growth for the next couple of months at least. One issue that has started to ... | Are there any other good alternatives to zc.buildout and/or virtualenv for installing non-python dependencies? | 0 | 0 | 0 | 2,576 |
161,367 | 2008-10-02T08:35:00.000 | 2 | 0 | 1 | 0 | python | 161,546 | 1 | true | 0 | 0 | Converting a traceback to the exception object wouldn't be too hard, given common exception classes (parse the last line for the exception class and the arguments given to it at instantiation.) The traceback object (the third argument returned by sys.exc_info()) is an entirely different matter, though. The traceback ob... | 1 | 0 | 0 | Just a curiosity: is there an already-coded way to convert a printed traceback back to the exception that generated it? :) Or to a sys.exc_info-like structure? | Library for converting a traceback to its exception? | 1.2 | 0 | 0 | 181 |
164,901 | 2008-10-02T22:27:00.000 | 62 | 0 | 0 | 0 | python,django,piracy-prevention | 164,987 | 7 | true | 1 | 0 | Don't try and obfuscate or encrypt the code - it will never work.
I would suggest selling the Django application "as a service" - either host it for them, or sell them the code and support. Write up a contract that forbids them from redistributing it.
That said, if you were determined to obfuscate the code in some way ... | 6 | 42 | 0 | Currently I am hosting a Django app I developed myself for my clients, but I am now starting to look at selling it to people for them to host themselves.
My question is this: How can I package up and sell a Django app, while protecting its code from pirating or theft? Distributing a bunch of .py files doesn't sound lik... | How would I package and sell a Django app? | 1.2 | 0 | 0 | 17,445 |
164,901 | 2008-10-02T22:27:00.000 | 7 | 0 | 0 | 0 | python,django,piracy-prevention | 167,240 | 7 | false | 1 | 0 | You'll never be able to keep the source code from people who really want it. It's best to come to grips with this fact now, and save yourself the headache later. | 6 | 42 | 0 | Currently I am hosting a Django app I developed myself for my clients, but I am now starting to look at selling it to people for them to host themselves.
My question is this: How can I package up and sell a Django app, while protecting its code from pirating or theft? Distributing a bunch of .py files doesn't sound lik... | How would I package and sell a Django app? | 1 | 0 | 0 | 17,445 |
164,901 | 2008-10-02T22:27:00.000 | 13 | 0 | 0 | 0 | python,django,piracy-prevention | 164,920 | 7 | false | 1 | 0 | The way I'd go about it is this:
Encrypt all of the code
Write an installer that contacts the server with the machine's hostname and license file and gets the decryption key, then decrypts the code and compiles it to python bytecode
Add (in the installer) a module that checks the machine's hostname and license file on... | 6 | 42 | 0 | Currently I am hosting a Django app I developed myself for my clients, but I am now starting to look at selling it to people for them to host themselves.
My question is this: How can I package up and sell a Django app, while protecting its code from pirating or theft? Distributing a bunch of .py files doesn't sound lik... | How would I package and sell a Django app? | 1 | 0 | 0 | 17,445 |
164,901 | 2008-10-02T22:27:00.000 | 4 | 0 | 0 | 0 | python,django,piracy-prevention | 5,915,669 | 7 | false | 1 | 0 | May I speak frankly, as a friend? Unless your app is Really Amazing, you may not get many buyers. Why waste the time on lawyers, obfuscation, licensing and whatnot? You stand to gain a better reputation by open-sourcing your code...and maintaining it.
Django comes from the open-source end of the spectrum from licensing... | 6 | 42 | 0 | Currently I am hosting a Django app I developed myself for my clients, but I am now starting to look at selling it to people for them to host themselves.
My question is this: How can I package up and sell a Django app, while protecting its code from pirating or theft? Distributing a bunch of .py files doesn't sound lik... | How would I package and sell a Django app? | 0.113791 | 0 | 0 | 17,445 |
164,901 | 2008-10-02T22:27:00.000 | 3 | 0 | 0 | 0 | python,django,piracy-prevention | 395,813 | 7 | false | 1 | 0 | One thing you might want to consider is what FogBugz does. Simply include a small binary (perhaps a C program) that is compiled for the target platforms and contains the code to validate the license.
This way you can keep the honest people honest with minimal headache on your part. | 6 | 42 | 0 | Currently I am hosting a Django app I developed myself for my clients, but I am now starting to look at selling it to people for them to host themselves.
My question is this: How can I package up and sell a Django app, while protecting its code from pirating or theft? Distributing a bunch of .py files doesn't sound lik... | How would I package and sell a Django app? | 0.085505 | 0 | 0 | 17,445 |
164,901 | 2008-10-02T22:27:00.000 | 10 | 0 | 0 | 0 | python,django,piracy-prevention | 445,887 | 7 | false | 1 | 0 | "Encrypting" Python source code (or bytecode, or really bytecode for any language that uses it -- not just Python) is like those little JavaScript things some people put on web pages to try to disable the right-hand mouse button, declaring "now you can't steal my images!"
The workarounds are trivial, and will not stop ... | 6 | 42 | 0 | Currently I am hosting a Django app I developed myself for my clients, but I am now starting to look at selling it to people for them to host themselves.
My question is this: How can I package up and sell a Django app, while protecting its code from pirating or theft? Distributing a bunch of .py files doesn't sound lik... | How would I package and sell a Django app? | 1 | 0 | 0 | 17,445 |
165,883 | 2008-10-03T06:18:00.000 | 0 | 0 | 1 | 0 | python,oop,object,attributes | 165,925 | 7 | false | 0 | 0 | There is no real point of doing getter/setters in python, you can't protect stuff anyway and if you need to execute some extra code when getting/setting the property look at the property() builtin (python -c 'help(property)') | 1 | 23 | 0 | Suppose I have a class with some attributes. How is it best (in the Pythonic-OOP) sense to access these attributes ? Just like obj.attr ? Or perhaps write get accessors ?
What are the accepted naming styles for such things ?
Edit:
Can you elaborate on the best-practices of naming attributes with a single or double lea... | Python object attributes - methodology for access | 0 | 0 | 0 | 40,229 |
166,334 | 2008-10-03T10:57:00.000 | 0 | 0 | 1 | 0 | python,deployment | 171,470 | 5 | false | 0 | 0 | I use Mercurial as my SCM system, and also for deployment too. It's just a matter of cloning the repository from another one, and then a pull/update or a fetch will get it up to date.
I use several instances of the repository - one on the development server, one (or more, depending upon circumstance) on my local machi... | 1 | 18 | 0 | I have a Python web application consisting of several Python packages. What is the best way of building and deploying this to the servers?
Currently I'm deploying the packages with Capistrano, installing the packages into a virtualenv with bash, and configuring the servers with puppet, but I would like to go for a more... | How to build and deploy Python web applications | 0 | 0 | 0 | 4,466 |
166,364 | 2008-10-03T11:10:00.000 | 0 | 0 | 0 | 0 | python,django,apache,session,mod-python | 699,045 | 5 | false | 1 | 0 | If you are using some global variables to hold data of your custom authentication session, you need to change this to use either file, database or memcached. As stated above mod_python launches few processes and there's no shared memory between them.
I recommend using memcached for this, also use cookies to store sessi... | 4 | 2 | 0 | I am running a Django through mod_python on Apache on a linux box. I have a custom authentication backend, and middleware that requires authentication for all pages, except static content.
My problem is that after I log in, I will still randomly get the log in screen now and again. It seems to me that each apache proce... | Django, mod_python, apache and wacky sessions | 0 | 0 | 0 | 1,356 |
166,364 | 2008-10-03T11:10:00.000 | 2 | 0 | 0 | 0 | python,django,apache,session,mod-python | 166,539 | 5 | false | 1 | 0 | You are correct about how Apache handles the processes, and sometimes you'll get served by a different process. You can see this when you make a change to your site; new processes will pick up the change, but old processes will give you the old site. To get consistency, you have to restart Apache.
Assuming a restart ... | 4 | 2 | 0 | I am running a Django through mod_python on Apache on a linux box. I have a custom authentication backend, and middleware that requires authentication for all pages, except static content.
My problem is that after I log in, I will still randomly get the log in screen now and again. It seems to me that each apache proce... | Django, mod_python, apache and wacky sessions | 0.07983 | 0 | 0 | 1,356 |
166,364 | 2008-10-03T11:10:00.000 | 0 | 0 | 0 | 0 | python,django,apache,session,mod-python | 14,830,843 | 5 | false | 1 | 0 | How to ensure that session is not cleared after Apache restart( or stop and start) ?
Because when I upgrade my source code and restart Apache, I refresh the web page and there I have to login again. Session is lost.
Session is stored in Memcache. No idea how and why its cleared. How to preserve the session so that the... | 4 | 2 | 0 | I am running a Django through mod_python on Apache on a linux box. I have a custom authentication backend, and middleware that requires authentication for all pages, except static content.
My problem is that after I log in, I will still randomly get the log in screen now and again. It seems to me that each apache proce... | Django, mod_python, apache and wacky sessions | 0 | 0 | 0 | 1,356 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.