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How do I correctly clean up a Python object?

__del__(self) above fails with an AttributeError exception. I understand Python doesn't guarantee the existence of "global variables" (member data in this context?) when __del__() is invoked. If that is the case and this is the reason for the exception, how do I make sure the object destructs...
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Git clone particular version of remote repository

I cloned a remote git repository about a month ago. The remote repository has undergone many changes and has now become unstable. Now I need another copy of the repository, version identical to the one I cloned a month ago. ...
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JSON.stringify without quotes on properties?

I'm using a service which uses incorrect JSON format (no double quotes around properties). So I need to send 9 Answers ...
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Cancel a UIView animation?

Is it possible to cancel a UIView animation while it is in progress? Or would I have to drop to the CA level? 17 Answers ...
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How can I rename a database column in a Ruby on Rails migration?

I wrongly named a column hased_password instead of hashed_password . 26 Answers 26 ...
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How do I check if file exists in Makefile so I can delete it?

... clean section of my Makefile I am trying to check if the file exists before deleting permanently. I use this code but I receive errors. ...
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Windows equivalent to UNIX pwd

... This prints it in the console: echo %cd% or paste this command in CMD, then you'll have pwd: (echo @echo off echo echo ^%cd^%) > C:\WINDOWS\pwd.bat share | imp...
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dd: How to calculate optimal blocksize? [closed]

... The optimal block size depends on various factors, including the operating system (and its version), and the various hardware buses and disks involved. Several Unix-like systems (including Linux and at least some flavors of BSD) define the st_blksize member in the struct...
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How to set target hosts in Fabric file

... I do this by declaring an actual function for each environment. For example: def test(): env.user = 'testuser' env.hosts = ['test.server.com'] def prod(): env.user = 'produser' env.hosts = ['prod.server.com'] def deploy(): ... Using the above ...
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Converting integer to binary in python

In order to convert an integer to a binary, I have used this code : 14 Answers 14 ...