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Subprocess changing directory
...ode tries to do is call a program named cd ... What you want is call a command named cd.
But cd is a shell internal. So you can only call it as
subprocess.call('cd ..', shell=True) # pointless code! See text below.
But it is pointless to do so. As no process can change another process's working ...
What are these ^M's that keep showing up in my files in emacs?
... feel that the Windows way is more logical, since the terms CR and LF come from the days of typewriters. You did have to do both: a Carriage Return to get the typing point to the start of the line and a Line Feed to scroll one line down. The Mac OS Classic way (CR) on a typewriter would just keep...
Determine if Python is running inside virtualenv
....base_prefix is the prefix of the system Python the virtualenv was created from.
The above always works for Python 3 stdlib venv and for recent virtualenv (since version 20). Older versions of virtualenv used sys.real_prefix instead of sys.base_prefix (and sys.real_prefix did not exist outside a vir...
Is there an S3 policy for limiting access to only see/access one bucket?
...source). As stated in this AWS blog post "as an aside, you currently can't selectively filter out certain buckets, so users must have permission to list all buckets for console access."
– jwadsack
Jun 25 '14 at 20:46
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Eclipse and Windows newlines
...ine Delimiters to : Unix
Tip: You can easily convert existing file by selecting then in the Package Explorer, and then going to the menu entry File : Convert Line Delimiters to : Unix
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Unable to add window — token android.os.BinderProxy is not valid; is your activity running?
...this blog post and comments:
http://dimitar.me/android-displaying-dialogs-from-background-threads/
From the stack trace above, it appears that the facebook library spins off the auth operation asynchronously, and you have a Handler - Callback mechanism (onComplete called on a listener) that could ...
How to have Emacs auto-refresh all buffers when files have changed on disk?
...GUI (Mine is GNU Emacs 25.1.1 on Windows 7):
Click "Options" in menubar
Select "Customize Emacs"
Select "Saved Options"
Then you should see a search field where you enter "global-auto-revert-mode" and press "Search" button
Click "Toggle" button and make sure it reads "on" to the right of the butt...
Dynamic instantiation from string name of a class in dynamically imported module?
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module = __import__(module, fromlist=[name]) only worked for me.
– umpirsky
Jan 9 '12 at 18:18
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open() in Python does not create a file if it doesn't exist
...if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right?
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The source was not found, but some or all event logs could not be searched
...dministrator Rights.
From the Start Menu, right click on Command Prompt, select "Run as administrator".
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