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How do I specify new lines on Python, when writing on files?
... you really want to get it right, you look up the newline character in the os package. (It's actually called linesep.)
Note: when writing to files using the Python API, do not use the os.linesep. Just use \n; Python automatically translates that to the proper newline character for your platform.
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Why does installing Nokogiri on Mac OS fail with libiconv is missing?
I've been trying to install Nokogiri on Mac OS 10.9.3 and whatever I try, the install fails in the end with the following error message:
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In Python script, how do I set PYTHONPATH?
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It has been many years since this answer was posted, but I still want to add that if you want to make sure that Python checks the new directory before all of the others when importing, you should put the new directory first in the list, as in sys.path.insert(0, '/path/to...
Restore the state of std::cout after manipulating it
Suppose I have a code like this:
8 Answers
8
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Update built-in vim on Mac OS X
... in Terminal.app like so.
alias vim='/Applications/MacVim.app/Contents/MacOS/Vim' # or something like that, YMMV
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How to manage local vs production settings in Django?
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That's the way I do - adding those lines at the end of settings.py so they can override the default settings
– daonb
Aug 18 '10 at 8:14
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mongod, mac os x - rlimits warning [closed]
I've been using mongo on my mac os x 10.8 and suddenly yesterday at my logs appeared this warning (and when starting shell it's present too) -
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Negation in Python
...herefore just replace your ! with not.
For your example, do this:
if not os.path.exists("/usr/share/sounds/blues") :
proc = subprocess.Popen(["mkdir", "/usr/share/sounds/blues"])
proc.wait()
For your specific example (as Neil said in the comments), you don't have to use the subprocess ...
Get last n lines of a file, similar to tail
...ctually accurate, you make the block size 2048 and you'll tail 20 lines almost immediately.
Also, I don't burn a lot of brain calories trying to finesse alignment with physical OS blocks. Using these high-level I/O packages, I doubt you'll see any performance consequence of trying to align on OS b...
How to read a file in reverse order?
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Also, while the posted code does answer the question, we should be careful to close files that we open. The with statement is usually quite painless.
– William
Mar 7 '13 at 14:41
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