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• logarithms in python

  - by Srikanth

  write a program to find the sum of the logarithms of all the primes from 2 to some number n, and print out the sum of the logs of the primes, the number n, and the ratio of these two quantities in python

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• Favourite Open Source Google App Engine apps (Java or Python)

  - by flybywire

  To learn from good examples, what are the best open source Google App Engine applications out there? I don't care if it is Java or Python based. Please one app per answer. Feel free to add a link to the live app (if there is) and to the project page.

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• Practicing BDD with python

  - by JtR

  Which are the most advanced frameworks and tools there are available for python for practicing Behavior Driven Development? Especially finding similar tools as rspec and mocha for ruby would be great.

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• How are Python's Built In Dictionaries Implemented

  - by ricree

  The topic title pretty much says it all. Does anyone know how the built in dictionary type for python is implemented? My understanding is that it is some sort of hash table, but I haven't been able to find any sort of definitive answer.

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• JSON | Django passing python list

  - by MMRUser

  Hi, I'm trying to send a Python list in to client side (encoded as JSON), this is the code snippet which I have written: array_to_js = [vld_id, vld_error, False] array_to_js[2] = True jsonValidateReturn = simplejson.dumps(array_to_js) return HttpResponse(jsonValidateReturn, mimetype='application/json') So my question is how to access it form client side, can I access it like this: jsonValidateReturn[0] or how I assign a name to the returned JSON array in order to access it?

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• Receiving XML document with python via HTTP

  - by Kerby82

  I want to do a very simple webserver in python able to receive XML document over HTTP and then to send as response XML document. Do you have any example? just to understand How arrange the work... many thanks!

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• Python Split usage

  - by Chris M

  I'm cocking this up and it should be really simple but the value of sortdate is none (note im only doing this because converting a string to a date in Python is a bugger). DateToPass = str(self.request.get('startdate')) mybreak.startdate = DateToPass faf = DateToPass.split('-') sortdate = str(faf[2] + faf[1] + faf[0]) That should work? but its just being stored as null though the datetopass is being stored fine.

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• merging in python

  - by Abruzzo Forte e Gentile

  Hi all I have the following 4 arrays ( grouped in 2 groups ) that I would like to merge in ascending order by the keys array. I can use also dictionaries as structure if it is easier. Has python any command or something to make this quickly possible? Regards MN # group 1 [7, 2, 3, 5] #keys [10,11,12,26] #values [0, 4] #keys [20, 33] #values # I would like to have [ 0, 2, 3, 4, 5, 7 ] # ordered keys [20, 11,12,33,26,33] # associated values

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• Looking for a good Python Tree data structure

  - by morpheous

  I am looking for a good Tree data structure class. I have come across this package, but since I am relatively new to Python (not programming), I dont know if there are any better ones out there. I'd like to hear from the Pythonistas on here - do you have a favorite tree script that you regularly use and would recommend?

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• Looking for a specific python gui module to perform the following task

  - by Sadaf Amouz

  I am looking for a GUI python module that is best suited for the following job: I am trying to plot a graph with many columns (perhaps hundreds), each column representing an individual. The user should be able to drag the columns around and drop them onto different columns to switch the two. Also, there are going to be additional dots drawn on the columns and by hovering over those dots, the user should see the values corresponding to those dots. What is the best way to approach this?

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• Print in terminal with colors using python ?

  - by aboSamoor

  I want to print in the terminal with colors ? how can I do that in python ? Another questions what is the best character that when it is printed it look like a box [brick] ? I want to print colored blocks, it is part of game :)

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• Install python 2.6 in CentOS

  - by tehryan

  I have a shell that runs CentOS For a project I'm doing I need python 2.5+ but centOS is pretty dependent on 2.4 From what I've read a number of things will break if you upgrade to 2.5 I wan't to install 2.5 separately from 2.4 but I'm not sure how to do it. So far I've downloaded the source tarball, untarred it and did a ./configure --prefix=/opt which is where I want it to end up. can I now just make, make install ? or is there more?

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• Determine if current user is in Administrators group (Windows/Python)

  - by FogleBird

  I want certain functions in my application to only be accessible if the current user is an administrator. How can I determine if the current user is in the local Administrators group using Python on Windows?

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• python 3 self class dict

  - by Jjang

  I am trying to create my own class of dictionary in python 3 which has a field of dict variable and setitem and getitem methods. Though, it doesnt work for some reason. Tried to look around but couldn't find the answer. class myDictionary: def __init(self): self.myDic={} def __setitem__(self, key, value): self.myDic[key]=value I'm getting: 'myDictionary' object has no attribute 'myDic' Any ideas? :)

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• Python analog of natsort function (sort a list using a "natural order" algorithm)

  - by Silver Light

  I would like to know if there is something similar to PHP natsort function in python? l = ['image1.jpg', 'image15.jpg', 'image12.jpg', 'iamge3.jpg'] l.sort() gives: ['image1.jpg', 'image12.jpg', 'image15.jpg', 'iamge3.jpg'] but I would like to get: ['image1.jpg', 'iamge3.jpg', 'image12.jpg', 'image15.jpg']

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• Python: convert 2 ints to 32 float

  - by bugspy.net

  How can I combine 2 ints to a single 32bit IEEE floating point ? (each of the 2 ints represent 16 bit) And in the opposite direction: How can I transform a python float into 2 16 bit ints? (I need this because of modbus protocol - where 2x16 bit registers are treated as single 32 floating point number)

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• best way to implement a deck for a card game in python

  - by matt1024

  What is the best way to store the cards and suits in python so that I can hold a reference to these values in another variable? For example, if I have a list called hand (cards in players hand), how could I hold values that could refer to the names of suits and values of specific cards, and how would these names and values of suits and cards be stored?

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• Making a python script only be able to run as a signal process

  - by Richard

  I am looking to make a python script be unique in the sense that it can only run once at a time. For example if I run the script and open another session of the same script a second time and the first session is still running, then the second session will just exit and do nothing. Anyone knows how I could implement this?

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• Making a python script only be able to run once at a time

  - by Richard

  I am looking to make a python script be unique in the sense that it can only run once at a time. For example if I run the script and open another session of the same script a second time and the first session is still running, then the second session will just exit and do nothing. Anyone knows how I could implement this?

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• Play a Sound with Python

  - by Claudiu

  What's the easiest way to play a sound file (.wav) in Python? By easiest I mean both most platform independent and requiring the least dependencies. pygame is certainly an option, but it seems overkill for just sound.

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• Running a function before exit (Python)

  - by dan

  Is there any way to run one last command before a running Python script is stopped by being killed by some other script, keyboard interrupt etc. Thanks for your help!

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• What Is The Replace Function In Python

  - by Eva

  I want to write a python code that open a text file and Replace with a word that i want send to it . May you give me an example ? Thanks .

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• Python file - Want to change it to a function or a class

  - by curious2know

  Hello, I have a python program/file that I want to run repeatedly and calculate the averages of some variables over these runs. To do so, I thought it might be convenient to convert this program into a function or a class. One way I can think of is to add a def Main(): line at the top and indent every line manually within it. Is there an easier way? I am using pydev on eclipse. Thanks.

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• Equivalent to F#’s Seq.scan() method in Python?

  - by tk

  is there a function like a F#'s Seq.scan() in python? i want to do some cumsum() or cumproduct() kind of things without looping.

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• Best way to copy a list in Python

  - by sheats

  lst1 = ['one', 2, 3] // What is the best way of the following -- or is there another way? lst2 = list(lst1) lst2 = lst1[:] import copy lst2 = copy.copy(lst1)

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