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• Emacs bulk indent for Python

  - by Vernon

  Working with Python in Emacs if I want to add a try/catch to a block of code, I often find that I am having to indent the whole block, line by line. In Emacs, how do you indent the whole block at once. I am not an experienced Emacs user, but just find it is the best tool for working through ssh. I am using Emacs on the command line(Ubuntu), not as a gui, if that makes any difference.

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• Python basics: One "empty" line in Python (print ''). What does it do?

  - by brilliant

  I know this question may well be the silliest question you've herd today, but to me it is a big question at this stage of my programming learning. Why is the second empty line needed in this Python code? What does that line do? print 'Content-Type: text/plain' print '' print 'Hello, world!'

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• Safest python code running

  - by Oduvan

  How can I protect my web server, if I run custom users code on server. If any user can submit his python source on my server and run it. Maybe some modules or linux tools for close any network and hardware activity for this script. Thank's all for help!

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• Writing a file shredder in python or ruby?

  - by pmilb21

  In the effort to learn python and/or ruby, I was wondering how a file shredder would be implemented? I would like it to take in a file as an argument and then employ an algorithm to make that file unrecoverable. Would possibly add the support for multiple files or even whole directories later.

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• How to make a simple clipboard monitor in python

  - by envy

  Hi! I was wondering how to make a simple Clipboard Monitor in python, for GUI I'm using PyGTK. I found gtk.clipboard class and all that but I couldn't find any solution to get the "signals" to trigger the event when the clipboard content has changed :( Any ideas? Thanks you! :)

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• Python multithreading, How is it using multiple Cores?

  - by Sabirul Mostofa

  I am running a multithreaded application(Python2.7.3) in a Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz. I thought it would be using only one core but using the "top" command I see that the python processes are constantly changing the core no. Enabling "SHOW THREADS" in the top command shows diffrent thread processes working on different cores. Can anyone please explain this? It is bothering me as I know from theory that multithreading is executed on a single core.

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• Parsing timestamp with retarded Python

  - by jellybean

  I want to parse a timestamp from a log file that has been written via datetime.datetime.now().strftime('%Y%m%d%H%M%S') and then compute the number of seconds that have passed since this timestamp. I know I could do it with datetime.datetime.strptime to get back a datetime object and then compute a timedelta. Problem is, the strptime function has been introduced with Python 2.5 and I'm using Python2.4.4 (an upgrade is not possible in my context). Any easy way to do this?

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• How to create temporary files in memory visible for other process, using python

  - by LazyMiha

  Hello! I`m trying to write simple batch file generator in python. Batch file consist of about 30-50 lines of text and is passed to other applications. During the execution of script there a lot of calls to external applications. I want to create file in memory (like named pipes in win32). Is there any platform independ way? p.s. sorry for possible mistakes in text, I'm still learning English

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• Automatically execute commands on launching python shell.

  - by thepandaatemyface

  Hi, I was wondering if there is a way to automatically run commands on entering the python shell as you would with the .bash_profile or .profile scripts with bash. I would like to automatically import some modules so I don't have to type the whole shebang everytime I hop into the shell. Thanks,

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• Convert python script to binary executable

  - by Werner

  Hi, I wrote a number crunching python code. The calculations involved can take hours. Is it possible somehow to compile it to binary? Thanks

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• Which logging library to use for cross-language (Java, C++, Python) system

  - by recipriversexclusion

  I have a system where a central Java controller launches analysis processes, which may be written in C++, Java, or Python (mostly they are C++). All these processes currently run on the same server. What are you suggestions to Create a central log to which all processes can write to What if in the future I push some processes to another server. How can I support distributed logging? Thanks!

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• Are classes in Python in different files?

  - by Asaf

  Much like Java (or php), I'm use to seperating the classes to files. Is it the same deal in Python? plus, how should I name the file? Lowercase like classname.py or the same like ClassName.py? Do I need to do something special if I want to create an object from this class or does the fact that it's in the same "project" (netbeans) makes it ok to create an object from it?

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• converting python list of strings to their type

  - by user248237

  given a list of python strings, how can I automatically convert them to their correct type? Meaning, if I have: ["hello", "3", "3.64", "-1"] I'd like this to be converted to the list ["hello", 3, 3.64, -1] where the first element is a stirng, the second an int, the third a float and the fourth an int. how can I do this? thanks.

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• Python: Streaming Input with Subprocesses

  - by beary605

  Since input and raw_input() stop the program from running anymore, I want to use a subprocess to run this program... while True: print raw_input() and get its output. This is what I have as my reading program: import subprocess process = subprocess.Popen('python subinput.py', stdout=subprocess.PIPE, stderr=subprocess.PIPE) while True: output=process.stdout.read(12) if output=='' and process.poll()!=None: break if output!='': sys.stdout.write(output) sys.stdout.flush() When I run this, the subprocess exits almost as fast as it started. How can I fix this?

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• Python style: if statements vs. boolean evaluation

  - by mkscrg

  One of the ideas of Python's design philosophy is "There should be one ... obvious way to do it." (PEP 20), but that can't always be true. I'm specifically referring to (simple) if statements versus boolean evaluation. Consider the following: if words: self.words = words else: self.words = {} versus self.words = words or {} With such a simple situation, which is preferable, stylistically speaking? With more complicated situations one would choose the if statement for readability, right?

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• change file descriptor for socket in python

  - by Dani

  Hello everybody I'm trying to manually create the file descriptor associated with a socket in python and then loaded directly into memory with mmap. Create a file into memory with mmap is simple, but I can not find a way to associate the file with a socket. Anyone know how? thank you very much.

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• Python - How is this snippet working?

  - by orokusaki

  For some reason this function confused me: def protocol(port): return port == "443" and "https://" or "http://" Can somebody explain the order of what's happening behind the scenes to make this work the way it does. I understood it as this until I tried it: Either A) def protocol(port): if port == "443": if bool("https://"): return True elif bool("http://"): return True return False Or B) def protocol(port): if port == "443": return True + "https://" else: return True + "http://" Is this some sort of special case in Python, or am I completely misunderstanding how statements work?

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• Bi-partitle matching in Python

  - by vailen

  Does anybody know any module in Python that computes the best bi-partite matching? I have tried the following two: munkres hungarian However, in my case, I have to deal with non-complete graph (i.e., there might not be an edge between two nodes), and therefore, there might not be a match if the node has no edge. The above two packages seem not be able to deal with this. Any advise?

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• Python - Timezones

  - by Adam

  Hey Is it possible with python to set the timezone just like this in php: date_default_timezone_set("Europe/London"); $Year = date('y'); $Month = date('m'); $Day = date('d'); $Hour = date('H'); $Minute = date('i'); I can't really install any other modules etc as I'm using shared web hosting. Any ideas?

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• comparing two text files storing it in third one python

  - by tazim

  Hi, I need to compare two files and redirect the different lines to third file. I know using diff command i can get the difference . But, is there any way of doing it in python ?

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• What are my alternatives to manage Python packages for clients?

  - by c00kiemonster

  So the setup is a slew of proprietary server/client Python applications running on one Linux box (the server) and a set of Windows 7 workstations (the clients). Everything is running smoothly until any of the proprietary Python packages needs updating. For now I am using distutils eggs which are very easily updated with easy_install, but it is still a manual process which quickly becomes tedious as the number of applications and client workstations grow. The ideal setup IMHO is to have the Python packages on the server so when a client application is launched on a workstation the client application can check to see whether its current Python packages are up-to-date. If not, the client application should download the newer Python package from the server, install it, and then launch as per normal. Does this sounds familiar to anyone? I have tried to find alternatives myself, but as far as I can see there is no Python module offering this functionality. Does anyone have any home made solutions for this?

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• Send HTML e-mail in App Engine / Python?

  - by Silver Dragon

  Can you please give me a simple, and straightforward python example of sending an HTML e-mail using App Engine? Plaintext is straightforward, but I'm having difficulties with HTML tags.

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• python truncate a long string

  - by Hulk

  How to truncate sthe string to 75 characters only in python This is how it was done in javascript var data="saddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddsaddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddsadddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd" var info = (data.length > 75) ? data.substring[0,75] + '..' : data;

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• python objects confusion

  - by james

  wow i thought i knew python untill tonight.. what is the correct way to do something like this.. heres my code a = ["one", "two", "three"] b = a #here i want a complete copy that when b is changed, has absolutely no effect on a b.append["four"] print a #a now has "four" in it.. so basically i want to know, instead of the b = a step, how would i correctly make a copy of a list or dictionary so that when b is changed a does not change along with it.. thanks guys

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• How to get console window width in python

  - by umnik700

  Is there a way in python to programmatically determine the width of the console? I mean the number of characters that fits in one line without wrapping, not the pixel width of the window. Edit Looking for a solution that works on Linux

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