🌐 Mailman 3 April 2016 - Python-list - python.org

copy locked files
by rubbishemail＠web.de Aug. 31, 2017

Aug. 31, 2017

Hello, do you know of any way to copy locked / opened files under win xp? I know there is something like "Volume Shadow Copy" but I don't know how to use it. Maybe someone already has a python solution? Many thanks Daniel

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Feature suggestion -- return if true
by zildjohn01 Aug. 25, 2017

Aug. 25, 2017

This is an idea I've had bouncing around in my head for a long time now. I propose the following syntax: return? expr be expanded to _temp = expr if _temp: return _temp It's a pattern I use all the time in my code, and although it's a bit unorthodox, IMO it's concise, readable, and easily understandable. Thoughts?

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Passing arguments to & executing, a python script on a remote machine from a python script on local machine (using ssh ?)
by ashish June 10, 2017

June 10, 2017

Hi c.l.p folks Here is my situation 1. I have two machines. Lets call them 'local' & 'remote'. Both run ubuntu & both have python installed 2. I have a python script, local.py, running on 'local' which needs to pass arguments ( 3/4 string arguments, containing whitespaces like spaces, etc ) to a python script, remote.py running on 'remote' (the remote machine). I have the following questions: 1. What's the best way to accomplish my task ? I have researched quite a bit & pretty much everybody is using ssh. After googling a bunch, most people are using very complex workarounds to do this sort of thing. I googled & found people using several libraries to accomplish ssh to remote machine & execute a command on remote machine. paramiko ( now forked into the ssh moduke), fabric, pushy ,etc People who have used any of these libraries, which one would you recommend, as the most apt (simple & easy to use, lightweight, best performance, etc) for my situation ? 2. I would prefer a solution, which does NOT require the installation of extra libraries on the local & remote machines. If installing external librar 3. Has anybody been able to do this using os.system ? I tried this >>> import os >>> os.system ("ssh remoteuser@remote python remote.py arg1 arg2 arg3") This worked, but if the arguments i tried to pass, had spaces, i was not able to 'escape' the spaces. Any & all explanations/links/code snippets/thoughts/ideas/suggestions/feedback/comments/ of the Python tutor community would be greatly appreciated. Thanks a ton cheers ashish email : ashish.makani domain:gmail.com “The only way to do great work is to love what you do. If you haven’t found it yet, keep looking. Don’t settle. As with all matters of the heart, you’ll know when you find it.” - Steve Jobs (1955 - 2011)

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Need help on a project To :"Create a class called BankAccount with the following parameters "
by Harbey Leke May 13, 2017

May 13, 2017

Create a class called BankAccount .Create a constructor that takes in an integer and assigns this to a `balance` property. .Create a method called `deposit` that takes in cash deposit amount and updates the balance accordingly. .Create a method called `withdraw` that takes in cash withdrawal amount and updates the balance accordingly. if amount is greater than balance return `"invalid transaction"` .Create a subclass MinimumBalanceAccount of the BankAccount class Please i need help on this i am a beginer into python programming. Also below is a test case given for this project import unittest class AccountBalanceTestCases(unittest.TestCase): def setUp(self): self.my_account = BankAccount(90) def test_balance(self): self.assertEqual(self.my_account.balance, 90, msg='Account Balance Invalid') def test_deposit(self): self.my_account.deposit(90) self.assertEqual(self.my_account.balance, 180, msg='Deposit method inaccurate') def test_withdraw(self): self.my_account.withdraw(40) self.assertEqual(self.my_account.balance, 50, msg='Withdraw method inaccurate') def test_invalid_operation(self): self.assertEqual(self.my_account.withdraw(1000), "invalid transaction", msg='Invalid transaction') def test_sub_class(self): self.assertTrue(issubclass(MinimumBalanceAccount, BankAccount), msg='No true subclass of BankAccount')

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by Xah May 7, 2017

May 7, 2017

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Re: strange behaviour when writing a large amount of data on stdout
by bokr＠oz.net April 11, 2017

April 11, 2017

On Wed, 23 Nov 2005 18:18:34 +0100, "Fredrik Lundh" <fredrik(a)pythonware.com> wrote: >Manlio Perillo wrote: > >> >>>>> print data >> >> >> >> Traceback (most recent call last): >> >> File "xxx", line xxx, in ? >> >> print data >> >> IOError: [Errno 12] Not enough space >> > >> >errno 12 is ENOMEM (that is, the system did not have enough memory >> >to finish an operation). >> >> However I think the error message is not a good one. >> Better a "Not enough memory" > >the message text is provided by the operating system (or rather, by >the C library). I'm not sure rewriting error messages is a good thing... > >(if Python itself runs out of memory, it'll raise a MemoryError instead) > Maybe there's a bare except: somewhere blocking earlier & perhaps more informative messages? If windows has been running a long time (a few days or a week may be long ;-) it may get fragmented in some smallish memory arena reserved for special things (I forgot what versions, but I wouldn't be surprised if something still had s specialized limit). Does the program involve dynamic generation of desktop icons by any chance? Especially a lot of large true-color ones? I have some faint inkling of some correlation of that and memory problems with still huge amounts of heap memory available. Has the OP rebooted and just run the offending program alone? BTW, if the OP wants to find out how much memory is on the windows system, the amount of memory probably shows in the "about" window of the task manager (the NT task manager will give you a scrolling real-time graph of different kinds of memory usage as well). Also if the OP has windows word editor (probably winword.exe will start it from the console command line), the "about" dialog may have a "system info ..." button that will show memory and a lot more. What that button runs is C:\Program Files\Common Files\Microsoft Shared\MSInfo\MSINFO32.exe on my system. Since it's accessible from Word, I wouldn't think it would be too unsafe to run, but I guess the OP might not want to start diagnostic things on arbitrary devices etc., if that's accessible from his session. Regards, Bengt Richter

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how to create IPictureDisp objects with python?
by Felix Jan. 5, 2017

Jan. 5, 2017

i try to host an activex control in my program . the control has a picture property which only accepts "IPictureDisp" interfaces. does anybody know how to create IPictureDisp objects? thanks.

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Web Scraping
by 121sukha Nov. 12, 2016

Nov. 12, 2016

I am new to python and I want to use web scraping to download songs from website. how do I write code to check if the website has uploaded a new song and have that song automatically be downloaded onto my computer. I know how to use the requests.get() module but i am more interested in knowing how to download and save every new song that the website uploads on the site. I would extremely appreciate the help from anyone. Thanks!

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