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ValueError : I/O operation on closed file
...d be inside the with block:
import csv
with open('v.csv', 'w') as csvfile:
cwriter = csv.writer(csvfile, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)
for w, c in p.items():
cwriter.writerow(w + c)
Outside the with block, the file is closed.
>>> with ope...
Undo part of unstaged changes in git
...ff between the index and HEAD to back out of the index.
$ git checkout -p file/to/partially/revert
# or ...
$ git checkout -p .
If you wish to snapshot your git repository beforehand to preserve these changes before reverting them, I like to do:
$ git stash; git stash apply
If you use that oft...
How to programmatically clear application data
...ces app-data with this
Editor editor =
context.getSharedPreferences(PREF_FILE_NAME, Context.MODE_PRIVATE).edit();
editor.clear();
editor.commit();
and for clearing app db, this answer is correct -> Clearing Application database
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Possible to change where Android Virtual Devices are saved?
...
Modify the file "virtual_android2.2.ini" in "C:\Documents and Settings{your windows login}.android\avd\":
target=android-8
path=E:\android_workspace\avd\virtual_android2.2.avd
And move the folder "virtual_android2.2.avd" from "C:\Doc...
Git stash uncached: how to put away all unstaged changes?
...t this answer, it seems to be working perfectly with me, for the untracted files you can add the -u flag
The full command becomes git stash --keep-index -u
And here's a snippet from the git-stash help
If the --keep-index option is used, all changes already added to the
index are left intact....
Convert string in base64 to image and save on filesystem in Python
...rmat, which represents PNG image. Is there a way to save this image to the filesystem, as a PNG file?
8 Answers
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How to do what head, tail, more, less, sed do in Powershell? [closed]
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Get-Content (alias: gc) is your usual option for reading a text file. You can then filter further:
gc log.txt | select -first 10 # head
gc -TotalCount 10 log.txt # also head
gc log.txt | select -last 10 # tail
gc -Tail 10 log.txt # also tail (since PSv3), also much faster ...
Visual Studio “Could not copy” … during build
...d that I can often overcome this problem by simply renaming the executable file and then deleting it.
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A reference to the dll could not be added
When I add a .dll file as a reference in C# application it shows an error :
17 Answers
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Django FileField with upload_to determined at runtime
I'm trying to set up my uploads so that if user joe uploads a file it goes to MEDIA_ROOT/joe as opposed to having everyone's files go to MEDIA_ROOT. The problem is I don't know how to define this in the model. Here is how it currently looks:
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