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  • about feeding of pythons

    - by djz
    i want to feed python but i cant see them eating live once . do they eat dead one ... and if i feed them a chicken leg piece which is boiled for the python to look like the live pray due to its heat will he eat ??? .. plz answer ....sir.....

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  • Counting amount of items in Pythons 'for'

    - by Markum
    Kind of hard to explain, but when I run something like this: fruits = ['apple', 'orange', 'banana', 'strawberry', 'kiwi'] for fruit in fruits: print fruit.capitalize() It gives me this, as expected: Apple Orange Banana Strawberry Kiwi How would I edit that code so that it would "count" the amount of times it's performing the for, and print this? 1 Apple 2 Orange 3 Banana 4 Strawberry 5 Kiwi

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  • How to make python_select work for '$>python' command?

    - by Jim
    I installed a couple of pythons in different versions with macports, and the apple python 2.6 is also working. Now I need to run a program which requires MySQLdb package support in python, and this package was installed to the python I installed by macports. The program tells me that there is no MySQLdb installed, so I guess it is the apple python working for that program. I searched for some help and found python_select for switching between pythons. However after the command $>sudo python_select python25 told me that it selected the version "python25" for python, when I type $>python it is still apple python 2.6 that launches. The question is that how can I make python25(the one with MySQLdb) work for the program rather than apple python? Another important thing, the program is NOT a .py file and needs to be compiled before running. So do I need to re-install this program? My Mac OS version is Snow Leopard 10.6. Any answer is appreciated.

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  • Opinions on logging in multiprocess applications

    - by chkorn
    We have written an application that spawns at least 9 parallel processes. All processes generate a lot of logging information. Currently we are using Pythons QueueHandler to consolidate all logs into one file. Unfortunately this sometimes results in very messy files which make them hard to read (e.g. Track what exactly is going on in one thread). Do you think it is a viable option to separate all messages into dedicated files, or is this going to make things even more messy due to the high number of files? What are your general experiences when writing log files for multiprocessed/multithreaded applications?

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  • Drawing a Dragons curve in Python

    - by Connor Franzoni
    I am trying to work out how to draw the dragons curve, with pythons turtle using the An L-System or Lindenmayer system. I no the code is something like the Dragon curve; initial state = ‘F’, replacement rule – replace ‘F’ with ‘F+F-F’, number of replacements = 8, length = 5, angle = 60 But have no idea how to put that into code.

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  • exeuting command in background

    - by tazim
    Hi, Trying to execute shell command in background using pythons commands module >>>import commands >>>output = commands.getstatusoutput("find / > tmp.txt &") sh: Syntax error: ";" unexpected Can anyone explain what is wrong with the syntax ? How should it be executed then ? Tazim.

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  • Experience of Python's “PEP-302 New Import Hooks”

    - by Koichi Sasada
    I'm one of the developers of Ruby (CRuby). We are working on Ruby 2.0 release (planned to release 2012/Feb). Python has "PEP302: New Import Hooks" (2003): This PEP proposes to add a new set of import hooks that offer better customization of the Python import mechanism. Contrary to the current import hook, a new-style hook can be injected into the existing scheme, allowing for a finer grained control of how modules are found and how they are loaded. We are considering introducing a feature similar to PEP302 into Ruby 2.0 (CRuby 2.0). I want to make a proposal which can persuade Matz. Currently, CRuby can load scripts from only file systems in a standard way. If you have any experience or consideration about PEP 302, please share. Example: It's a great spec. No need to change it. It is almost good, but it has this problem... If I could go back to 2003, then I would change the spec to... I'm sorry if such a question is not suitable for here. I posted here because I'm not sure that I can ask this question at python-dev (of course, the list is not for cruby development). This post is moved from http://stackoverflow.com/questions/11188229/experience-of-pythons-pep-302-new-import-hooks.

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  • Distribute pre-compiled python extension module with distutils

    - by Toji
    Quick one today: I'm learning the in's and out's of Pythons distutils library, and I would like to include a python extension module (.pyd) with my package. I know of course that the recommended way is to have distutils compile the extension at the time the package is created, but this is a fairly complex extension spanning many source files and referencing several external libs so it's going to take some significant playing to get everything working right. In the meantime I have a known working build of the extension coming out of Visual Studio, and would like to use it in the installer as a temporary solution to allow me to focus on other issues. I can't specify it as a module, however, since those apparently must have an explicit .py extension. How could I indicate in my setup.py that I want to include a pre-compiled extension module? (Python 3.1, if it matters)

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  • Compiling python modules whith DEBUG defined on MSVC

    - by DaedalusFall
    Python rather stupidly has a pragma directive in its include files that forces a link against python26_d.lib when the DEBUG preprocessor variable is defined. This is a problem because the python installer doesn't come with python26_d.lib! So I can't build applications in msvc in debug mode. If i temporarily #undef DEBUG for just one file I get many complaints about inconsistent DLL linkage. If I change the pragma in pythons include file I get undefined references to various debug functions. I have tried compiling my own version of python but its somehow different enough from the python that gets distributed that I can't use my modules with apps built with the vanilla version of python Can anyone give me any advice on how to get round this? Thanks

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  • PHP Fizzbuzz Challenge

    - by Pez Cuckow
    Someone at work as poised the challenge to create a script that prints the FizzBuzz game in as few likes as possible using PHP The challenge Write a program that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”. For numbers which are multiples of both three and five print “FizzBuzz”. My attempt: foreach(range(1,100) as $i) { $val = ($i % 3 == 0 ? "Fizz" : "").($i % 5 == 0 ? "Buzz" : ""); echo (empty($val) ? $i : $val) . '<br />'; } Someone's Pythons attempt [ ("Fizz" if not i % 3 else "") + ("Buzz" if not i % 5 else "") + ("Baz" if not i % 7 else "") if _ else "" for i in range(0, 100) ] Can you see how to make this better/improve it? Or even do it better? Thanks for your time

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  • overview/history of resident memory usage

    - by kapet
    I have a fairly complicated program (Python with SWIG'ed C++ code, long running server) that shows a constantly growing resident memory usage. I've been digging with the usual tools for the leak (valgrind, Pythons gc module, etc.) but to no avail so far. I'm a bit afraid that the actual problem is memory fragmentation within Python and/or libc managed memory. Anyway, my question is more specific right now: Is there a tool to visualize resident memory usage and ideally show how it develops over time? I think the raw data is in /proc/$PID/smaps but I was hoping there's some tool that shows me a nice graph of the amounts used by mmap'ed files vs. anonymous mmap'ed memory vs. heap over time so that it's easier to see (literally) what's changing. I couldn't find anything though. Does anybody know of a ready to use tool that graphs memory usage over space and time in an intuitive way?

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  • Python as your main language. Possible?

    - by Deinumite
    I am currently attending college and the languages that I will 'know' by graduation are C++ and Java. That being said, i am also in the process of teaching myself Python. I know that every programming language has its own pros and cons, but would it be possible to become a python developer out of school? I always have more 'fun' programming in Python than i do in C++ or Java, and I am also in love with Pythons documentation. I know C++ will always be on top in terms of speed, but what would be the benefit of memorizing every javadoc against focusing on Python instead? are there good jobs to be had with Python? edit: also, would it be beneficial for me to look at C# as well? Microsoft is really throwing their support at it so that could be a decent career path as well.

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  • Does weak typing offer any advantages?

    - by sub
    Don't confuse this with static vs. dynamic typing! You all know JavaScripts/PHPs infamous type systems: PHP example: echo "123abc"+2; // 125 - the reason for this is explained // in the PHP docs but still: This hurts echo "4"+1; // 5 - Oh please echo "ABC"*5; // 0 - WTF // That's too much, seriously now. // This here might be actually a use for weak typing, but no - // it has to output garbage. JavaScript example: // A good old JavaScript, maybe you'll do better? alert("4"+1); // 51 - Oh come on. alert("abc"*3); // NaN - What the... // Have your creators ever heard of the word "consistence"? Python example: # Python's type system is actually a mix # It spits errors on senseless things like the first example below AND # allows intelligent actions like the second example. >>> print("abc"+1) Traceback (most recent call last): File "<pyshell#2>", line 1, in <module> print("abc"+1) TypeError: Can't convert 'int' object to str implicitly >>> print("abc"*5) abcabcabcabcabc Ruby example: puts 4+"1" // Type error - as supposed puts "abc"*4 // abcabcabcabc - makes sense After these examples it should be clear that PHP/JavaScript probably have the most inconsistent type systems out there. This is a fact and really not subjective. Now when having a closer look at the type systems of Ruby and Python it seems like they are having a much more intelligent and consistent type system. I think these examples weren't really necessary as we all know that PHP/JavaScript have a weak and Python/Ruby have a strong type system. I just wanted to mention why I'm asking this. Now I have two questions: When looking at those examples, what are the advantages of PHPs and JavaScripts type systems? I can only find downsides: They are inconsistent and I think we know that this is not good Types conversions are hardly controllable Bugs are more likely to happen and much harder to spot Do you prefer one of the both systems? Why? Personally I have worked with PHP, JavaScript and Python so far and must say that Pythons type system has really only advantages over PHPs and JavaScripts. Does anybody here not think so? Why then?

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  • Installing a clean Python 2.6 on SuSE (SLES) 11 using system-wide libraries

    - by optilude
    Hi, I've spent most of the day on this, and it is driving me absolutely insane. On all other Unixes I've used, this is a walk in the park, but SLES 11 has me dumbfounded. I need to build Zope on SLES 11 64 bit: Linux <name> 2.6.27.45-0.1-default #1 SMP 2010-02-22 16:49:47 +0100 x86_64 x86_64 x86_64 GNU/Linux I first tried to just use the YaST-installed Python 2.6. I've also installed python-devel, libjpeg-devel, readline-devel, libopenssl-devel, libz2-devel, zlib-devel, and libgcrypt-devel. The global python2.6 has a lot of cruft in it, and seems to execute stuff in /etc/pythonstart when I use it, which doesn't help. However, the error I get is this: Getting distribution for 'Zope2==2.12.3'. src/AccessControl/cAccessControl.c:596: warning: initialization from incompatible pointer type src/AccessControl/cAccessControl.c:598: warning: ‘intargfunc’ is deprecated src/AccessControl/cAccessControl.c:598: warning: initialization from incompatible pointer type src/AccessControl/cAccessControl.c:599: warning: ‘intargfunc’ is deprecated src/AccessControl/cAccessControl.c:599: warning: initialization from incompatible pointer type src/AccessControl/cAccessControl.c:600: warning: ‘intintargfunc’ is deprecated src/AccessControl/cAccessControl.c:600: warning: initialization from incompatible pointer type src/AccessControl/cAccessControl.c:601: warning: initialization from incompatible pointer type src/AccessControl/cAccessControl.c:602: warning: initialization from incompatible pointer type src/AccessControl/cAccessControl.c:606: warning: ‘intargfunc’ is deprecated src/AccessControl/cAccessControl.c:606: warning: initialization from incompatible pointer type /usr/lib64/gcc/x86_64-suse-linux/4.3/../../../../x86_64-suse-linux/bin/ld: skipping incompatible /usr/lib/libpython2.6.so when searching for -lpython2.6 /usr/lib64/gcc/x86_64-suse-linux/4.3/../../../../x86_64-suse-linux/bin/ld: cannot find -lpython2.6 collect2: ld returned 1 exit status error: Setup script exited with error: command 'gcc' failed with exit status 1 An error occured when trying to install Zope2 2.12.3. Look above this message for any errors that were output by easy_install. I don't know what "incompatible" is referring to here; my guess would be the hardware architecture, but I'm not sure what's incompatible with what in the statement above. I've had problems with system-installed Pythons before, so I tried to compile my own (hence the list of -devel packages above), downloading the Python 2.6 tarball and running: ./configure --disable-tk --prefix=${HOME}/python make make install This installs, but it seems to be unable to find any system-wide libraries. Here's a sample interpreter session: Python 2.6.5 (r265:79063, Mar 29 2010, 17:04:12) [GCC 4.3.2 [gcc-4_3-branch revision 141291]] on linux2 Type "help", "copyright", "credits" or "license" for more information. Traceback (most recent call last): File "/etc/pythonstart", line 7, in <module> import readline ImportError: No module named readline >>> from hashlib import md5 Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/osc/python-2.6/lib/python2.6/hashlib.py", line 136, in <module> md5 = __get_builtin_constructor('md5') File "/home/osc/python-2.6/lib/python2.6/hashlib.py", line 63, in __get_builtin_constructor import _md5 ImportError: No module named _md5 Both readline and hashlib (via libgrypt) should be installed, and the relevant -devel packages are also installed. On Ubuntu or OS X, this works just fine. On SuSE, no luck. Any help greatly appreciated! Martin

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  • CodePlex Daily Summary for Sunday, July 14, 2013

    CodePlex Daily Summary for Sunday, July 14, 2013Popular ReleasesVidCoder: 1.4.23: New in 1.4.23 Added French translation. Fixed non-x264 video encoders not sticking in video tab. New in 1.4 Updated HandBrake core to 0.9.9 Blu-ray subtitle (PGS) support Additional framerates: 30, 50, 59.94, 60 Additional sample rates: 8, 11.025, 12 and 16 kHz Additional higher bitrates for audio Same as Source Constant Framerate 24-bit FLAC encoding Added Windows Phone 8 and Apple TV 3 presets Introduced process isolation for encodes. Now if HandBrake crashes, VidCoder will ...Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.96: Fix for issue #19957: EXE should output the name of the file(s) being minified. Discussion #449181: throw a Sev-2 warning when trailing commas are detected on an Array literal. Perfectly legal to do so, but the behavior ends up working differently on different browsers, so throw a cross-browser warning. Add a few more known global names for improved ES6 compatibility update Nuget package to version 2.5 and automatically add the AjaxMin.targets to your project when you update the package...JSLint.NET: JSLint.NET 0.9.1 Beta: Version 0.9.1 Beta includes: JSLint.NET Console: Console help available using the /? switch (or no arguments). See the Console Options page for more. JSLint.NET for Visual Studio: Support linked JSLintNet.json file. More about this file on the JSLint.NET Settings page. Hide un-implemented menu items. Prefix JSLint errors in the task list. JSLint.NET Core: Allow ignoring of individual files in JSLintNet.json.TypePipe: 1.15.2.0 (.NET 4.5): This is build 1.15.2.0 of the TypePipe for .NET 4.5. Find the complete release notes for the build here: Release Notes.re-linq: 1.15.2.0 (.NET 4.5): This is build 1.15.2.0 of re-linq for .NET 4.5. Find the complete release notes for the build here: Release Notes To use re-linq with .NET 3.5, use a 1.13.x build.Columbus Remote Desktop: 2.0 Sapphire: Added configuration settings Added update notifications Added ability to disable GPU acceleration Fixed connection bugsSearch for Team Foundation Server workitems changes: Release 1.2: - Issue 1184 fixed, - Changeset's comboboxes sorted by Id (From : Ascending - To : Descending) - Application window iconImpulse Media Player: Impulse Media Player 3.5.0.1: Fixed a crash that occurs when copying data from lastfm to file panelPhoneGuitarTab: Release 1.1: Improved UX. Simplified navigation. More performance improvements coming soon.The GLMET Project: Get OS Version: --DataDevelop: Beta 0.6.5: Hotfix bug in Python Table.ImportAll method Updated External Libraries Fixes in Excel Exportation Modify ConnectionString refreshes the Properties Window correctlyUser Group Labs: User Group Data: 01.00.00: This release has the following updates and new features: Initial release with a minimal feature set Easy to use (just add to the social group details page) Edit common user group properties System Requirements DNN v07.00.02 or newer .Net Framework v4.0 or newerCarrotCake, an ASP.Net WebForms CMS: Binaries and PDFs - Zip Archive (v. 4.3 20130709): Product documentation and additional templates for this version is included in the zip archive, or if you want individual files, visit the http://www.carrotware.com website. Templates, in addition to those found in the download, can be downloaded individually from the website as well. If you are coming from earlier versions, make a precautionary backup of your existing website files and database. When installing the update, the database update engine will create the new schema items (if you...Dalmatian Build Script: Dalmatian Build 0.1.3.0: -Minor bug fixes -Added Choose<T> and ChooseYesNo to Console objectPushover.NET: Pushover.NET - Stable Release 10 July 2013: This is the first stable release of Pushover.NET. It includes 14 overloads of the SendNotification method, giving you total flexibility of sending Pushover notifications from your client. Assembly is built to .NET 2.x so it can be called from .NET 2.x, 3.x and 4.x projects. Also available is the Test Harness. This is a small GUI that you can use to test calls to Pushover.NET's main DLL. It's almost fully functional--the sound effects haven't been fully configured so no matter what you pick ...MCEBuddy 2.x: MCEBuddy 2.3.14: 2.3.14 BETA is available through the Early Access Program.Click here https://mcebuddy2x.codeplex.com/discussions/439439 for details and to get access to Early Access Program to download latest releases. Changelog for 2.3.14 (32bit and 64bit) NEW FEATURES: 1. ENHANCEMENTS: 2. Improved eMail notifications 3. Improved metrics details 4. Support for larger history (INI) file (about 45,000 sections, each section can have about 1500 entries) BUG FIXES: 5. Fix for extracting Movie release year from...Azure Depot: Flask: Flask Version 01LINQ to Twitter: LINQ to Twitter v2.1.07: Supports .NET 3.5, .NET 4.0, .NET 4.5, Silverlight 4.0, Windows Phone 7.1, Windows Phone 8, Client Profile, Windows 8, and Windows Azure. 100% Twitter API coverage. Also supports Twitter API v1.1! Also on NuGet.DotNetNuke® Community Edition CMS: 06.02.08: Major Highlights Fixed issue where the application throws an Unhandled Error and an HTTP Response Code of 200 when the connection to the database is lost. Security FixesNone Updated Modules/Providers ModulesNone ProvidersNoneModern UI for WPF: Modern UI 1.0.5: The ModernUI assembly including a demo app demonstrating the various features of Modern UI for WPF. BREAKING CHANGE This version is backwards incompatible. ModernDialog.ShowMessage returns MessageBoxResult instead of bool? Related downloads NuGet ModernUI for WPF is also available as NuGet package in the NuGet gallery, id: ModernUI.WPF Download Modern UI for WPF Templates A Visual Studio 2012 extension containing a collection of project and item templates for Modern UI for WPF. The extensi...New ProjectsA Domain-Driven Design Framework for .Net: A .Net framework library for applying the domain-driven design approach to develop business software.a Linq to Workitem provider: Wilinq is a linq to workitem provider. It also contains WIQL to expression tree parser. Wilinq is based on the the fissum project source codeApprentice for WP: Apprentice for WPArgo New Deal: Data Type DBL DAL UI ToolsC# Practice: C# PracticeDardemEvo: summaryDavid.A.Zhang: Personal class LibrayEnglish Practice Helper: English Practice Helper is a C# window form application for everyone want to practice writing,speaking,listening and reading skill with your OWN computerFinancialManagement: FinancialManagementGoAgent GUI: GoAgent??????。GoAgent: https://code.google.com/p/goagentIndustrial Programming: Industrial Programming approaches tips (it's old and in russian language)ISS.IR.RRN-MS: Summary Tany :PLifeDataManager: Web project to manage some dataMixERP - ERP Solution That Sucks Less: A humble ERP solution that does not scare the users, MixERP is a purely mult-establishment and multi-currency solution.Nokia Portal: Install Nokia, HTC and LG apps on any WP8 devicePenn State SWENG 581 Team 5 Su13.2: This project is an academic extension of the NClass project found at http://nclass.sourceforge.net for the purposes of software testing and quality assurance.Pomp: testProfessor Oak's Pokemon Library DotNet: The Professor Oak's Pokemon Library is a .NET class library that aims to help programmers, by providing different tools to modify the game memory.Pure Music Player: Pure Music PlayerRandomly Balanced Trees: C# Implementations of Treap and Skiplist data structures. Which are representations of randomly balanced binary trees.ReoScript: JavaScript-like script language engine for .NET application. Easy to plug in .NET program and make API extension for script. SQL Queries: This is for all developers help.SqlSetup: This project create SQL server database automatically. Truco Pythons: Truco Argentino (Argentine truc), is a card game developed in python by Argentine programmers of the UNGS (General Sarmiento National University). WebServer .NET: Projekt zawiera oprogramowanie i zestaw narzedzi do zarzadzania serwerem http. Posiada wiele funkcjonalnosci ulatwiajacych korzystanie i konfigurowanie serwera.workspaces: solr exampleWP8NativeAccess: Win32 API wrappers for Windows Phone 8. Intended to be used in WP8 WinRT apps. Includes FileSystem project.

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  • Dynamically loading modules in Python (+ multi processing question)

    - by morpheous
    I am writing a Python package which reads the list of modules (along with ancillary data) from a configuration file. I then want to iterate through each of the dynamically loaded modules and invoke a do_work() function in it which will spawn a new process, so that the code runs ASYNCHRONOUSLY in a separate process. At the moment, I am importing the list of all known modules at the beginning of my main script - this is a nasty hack I feel, and is not very flexible, as well as being a maintenance pain. This is the function that spawns the processes. I will like to modify it to dynamically load the module when it is encountered. The key in the dictionary is the name of the module containing the code: def do_work(work_info): for (worker, dataset) in work_info.items(): #import the module defined by variable worker here... # [Edit] NOT using threads anymore, want to spawn processes asynchronously here... #t = threading.Thread(target=worker.do_work, args=[dataset]) # I'll NOT dameonize since spawned children need to clean up on shutdown # Since the threads will be holding resources #t.daemon = True #t.start() Question 1 When I call the function in my script (as written above), I get the following error: AttributeError: 'str' object has no attribute 'do_work' Which makes sense, since the dictionary key is a string (name of the module to be imported). When I add the statement: import worker before spawning the thread, I get the error: ImportError: No module named worker This is strange, since the variable name rather than the value it holds are being used - when I print the variable, I get the value (as I expect) whats going on? Question 2 As I mentioned in the comments section, I realize that the do_work() function written in the spawned children needs to cleanup after itself. My understanding is to write a clean_up function that is called when do_work() has completed successfully, or an unhandled exception is caught - is there anything more I need to do to ensure resources don't leak or leave the OS in an unstable state? Question 3 If I comment out the t.daemon flag statement, will the code stil run ASYNCHRONOUSLY?. The work carried out by the spawned children are pretty intensive, and I don't want to have to be waiting for one child to finish before spawning another child. BTW, I am aware that threading in Python is in reality, a kind of time sharing/slicing - thats ok Lastly is there a better (more Pythonic) way of doing what I'm trying to do? [Edit] After reading a little more about Pythons GIL and the threading (ahem - hack) in Python, I think its best to use separate processes instead (at least IIUC, the script can take advantage of multiple processes if they are available), so I will be spawning new processes instead of threads. I have some sample code for spawning processes, but it is a bit trivial (using lambad functions). I would like to know how to expand it, so that it can deal with running functions in a loaded module (like I am doing above). This is a snippet of what I have: def do_mp_bench(): q = mp.Queue() # Not only thread safe, but "process safe" p1 = mp.Process(target=lambda: q.put(sum(range(10000000)))) p2 = mp.Process(target=lambda: q.put(sum(range(10000000)))) p1.start() p2.start() r1 = q.get() r2 = q.get() return r1 + r2 How may I modify this to process a dictionary of modules and run a do_work() function in each loaded module in a new process?

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