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what does the __file__ variable mean/do?
...that determine path at runtime, and I would really like to understand the os.path module so that I can start using it.
5 ...
Why does multiprocessing use only a single core after I import numpy?
I am not sure whether this counts more as an OS issue, but I thought I would ask here in case anyone has some insight from the Python end of things.
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How to check if running in Cygwin, Mac or Linux?
...ing to the very helpful schot (in the comments), uname -s gives Darwin for OSX and Linux for Linux, while my Cygwin gives CYGWIN_NT-5.1. But you may have to experiment with all sorts of different versions.
So the bash code to do such a check would be along the lines of:
unameOut="$(uname -s)"
case...
How do I upgrade PHP in Mac OS X?
... may want to check out Marc Liyanage's PHP package. It comes in a nice Mac OS X installer package that you can double-click. He keeps it pretty up to date.
http://php-osx.liip.ch/
Also, although upgrading to Snow Leopard won't help you do PHP updates in the future, it will probably give you a newe...
Bundling data files with PyInstaller (--onefile)
... base_path = sys._MEIPASS
except Exception:
base_path = os.path.abspath(".")
return os.path.join(base_path, relative_path)
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Where do I find old versions of Android NDK? [closed]
...bz2
http://dl.google.com/android/ndk/android-ndk-r9b-linux-x86_64.tar.bz2
OS X example:
http://dl.google.com/android/ndk/android-ndk-r9b-darwin-x86.tar.bz2
http://dl.google.com/android/ndk/android-ndk-r9b-darwin-x86_64.tar.bz2
Windows example:
http://dl.google.com/android/ndk/android-ndk-r9b-windo...
Make sure only a single instance of a program is running
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The following code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version is avail...
Maximum Java heap size of a 32-bit JVM on a 64-bit OS
The question is not about the maximum heap size on a 32-bit OS, given that 32-bit OSes have a maximum addressable memory size of 4GB, and that the JVM's max heap size depends on how much contiguous free memory can be reserved.
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How to get an absolute file path in Python
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>>> import os
>>> os.path.abspath("mydir/myfile.txt")
'C:/example/cwd/mydir/myfile.txt'
Also works if it is already an absolute path:
>>> import os
>>> os.path.abspath("C:/example/cwd/mydir/myfile.txt")
'C:...
How to list only top level directories in Python?
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Filter the result using os.path.isdir() (and use os.path.join() to get the real path):
>>> [ name for name in os.listdir(thedir) if os.path.isdir(os.path.join(thedir, name)) ]
['ctypes', 'distutils', 'encodings', 'lib-tk', 'config', 'idlel...