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• Thread-safe equivalent to python's time.strptime() ?

  - by Wells

  Something I wrote throws a lot of AttributeErrors when using time.strptime() inside a thread. This only seems to happen on Windows (not on Linux), but whatever…. Upon a'Googling, it seems that time.strptime() isn't considered thread-safe. Is there a better way to create a datetime object from a string? Current code looks like: val = DateFromTicks(mktime(strptime(val, '%B %d, %Y'))) But, that yields the AttributeErrors as its run inside a thread. Thanks!

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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 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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• 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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• NetBeans and Python

  - by spacemonkey

  When I run some python code in NetBeans, which raises an error, the output in NetBeans just gives an error message and no further information, such as line number. Is there any way to fix that?

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• Limiting the size of a python dictionary

  - by anthony

  I'd like to work with a dict in python, but limit the number of key/value pairs to X. In other words, if the dict is currently storing X key/value pairs and I perform an insertion, I would like one of the existing pairs to be dropped. It would be nice if it was the least recently inserted/accesses key but that's not completely necessary. If this exists in the standard library please save me some time and point it out!

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• [python] parsing a string based on specified identifiers

  - by jml

  Let's say that I have the following text: in = "one aaa two bbbb three cccc" I would like to parse this into a group of variables that contain notworking = ["one", "two", "three"] v1,v2,v3 = in.split(notworking) I know that the example above won't work, but is there some utility in python that would allow me to use this sort of approach? I know what the identifiers will be in advance, so I would think that there has got to be a way to do this... Thanks for any help, jml

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• Amazon API library for Python?

  - by Kevin

  What Python libraries do folks use for querying Amazon product data? (Amazon Associates Web Service - used to be called E-Commerce API, or something along those lines). Based on my research, PyAWS (http://pyaws.sourceforge.net/) seems okay, but still pretty raw (and hasn't been updated in a while). Wondering if there's an obvious canonical library that I'm just missing.

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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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• python: list manipulation

  - by Jason S

  I have a list L of objects (for what it's worth this is in scons). I would like to create two lists L1 and L2 where L1 is L with an item I1 appended, and L2 is L with an item I2 appended. I would use append but that modifies the original list. How can I do this in Python? (sorry for the beginner question, I don't use the language much, just for scons)

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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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• Reduce Processing Time of accessing databse

  - by medma

  hello all, I m making an app which requires remote databse connection. I want the values in picker from database but when I click on button to invoke picker it takes some time to fetch the values and displaying. Is there any way to do it fast? and also is there any way to reduce the time of transition between 2 views? Thanx

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• How to make an executable file in python?

  - by aF

  Hello, I want to make an executable file (.exe) of my python's application. I want to know how to do it but have this in mind: I use a c++ dll! Do I have to put the dll along side with the .exe or is there some other way? Thanks in advance!

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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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• Need to constantly monitor serial data in Python

  - by jakke34

  Right now I am using an arduino to send data from an analog sensor to COM4. I am trying to make a python script that continuously monitors that data and looks for a certain parameter. I tried something like this but it isn't outputing the data like I want. import serial port = "COM4" ser = serial.Serial(port,9600, timeout =1) value = 0 while 1: value = ser.read() print value

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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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• Scientific Plotting in Python

  - by user100046

  I have a large data set of tuples containing (time of event, latitude, longitude) that I need to visualize. I was hoping to generate a 'movie'-like xy-plot, but was wondering if anyone has a better idea or if there is an easy way to do this in Python? Thanks in advance for the help, --Leo

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• Split a string by spaces -- preserving quoted substrings -- in Python

  - by Adam Pierce

  I have a string which is like this: this is "a test" I'm trying to write something in Python to split it up by space while ignoring spaces within quotes. The result I'm looking for is: ['this','is','a test'] PS. I know you are going to ask "what happens if there are quotes within the quotes, well, in my application, that will never happen.

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• running a python script on a remote computer

  - by Richard

  Hello all, I have a python script and am wondering is there any way that I can ensure that the script run's continuously on a remote computer? Like for example, if the script crashes for whatever reason, is there a way to start it up automatically instead of having to remote desktop. Are there any other factors I have to be aware of? The script will be running on a window's machine.

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• In python, why is "import *" bad?

  - by Software Enthusiastic

  It is recommended to not to use import * in python. Can anyone please share the reason for that, so that I can avoid it doing next time. Thanks and Regards

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• Python bitoperators

  - by Neelima

  What do the bit operators like AND(&),OR(|),XOR(^) in python do behind the screen? What do they calculate? I cannot understand the results they give when used in a program? 30&45 yields 12. How can we relate these three? 30|45 yields 63. How are these three related? Please answer this...

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• Run a remote python script from ASP.Net

  - by Jaelebi

  I have a python script on a linux server that I can SSH into and I want to run the script on the linux server( and pass it parameters entered by the user) and get the output on an ASP.net webpage running on IIS. How would I be able to do that? Would it be easier if I was running a wamp server? Edit: The servers are in the same internal intranet.

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• Python new-style classes and __subclasses__ function

  - by Fraser Graham

  Can somebody explain to me why this works (in Python 2.5) : class Foo(object): pass class Bar(Foo): pass print(Foo.__subclasses__()) but this doesn't : class Foo(): pass class Bar(Foo): pass print(Foo.__subclasses__()) The latter returns "AttributeError: class Foo has no attribute '__subclasses__'" but i'm not sure why. I know this is related to old-style vs. new-style classes but i'm not clear on why that would make this functionality unavailable.

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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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• How to share a dictionary between multiple processes in python without locking

  - by RandomVector

  I need to share a huge dictionary (around 1 gb in size) between multiple processs, however since all processes will always read from it. I dont need locking. Is there any way to share a dictionary without locking? The multiprocessing module in python provides an Array class which allows sharing without locking by setting lock=false however There is no such option for Dictionary provided by manager in multiprocessing module.

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