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Find a file in python
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os.walk is the answer, this will find the first match:
import os
def find(name, path):
for root, dirs, files in os.walk(path):
if name in files:
return os.path.join(root, name)
And this will find a...
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...
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 ...
App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...EMOTE_VIDEO_CAR.aia
原作者开发动机
对于一个项目，应该开发一个与 ESP8266（项目）通信的 Android 应用程序。为了轻松开发应用程序，选择了 MIT App Inventor 2。
项目中可用的 ESP8266 设备的 IP 地址不应固定。应用程...
Detect Windows version in .net
How can I detect the Windows OS versions in .net?
15 Answers
15
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Python's os.makedirs doesn't understand “~” in my path
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You need to expand the tilde manually:
my_dir = os.path.expanduser('~/some_dir')
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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...
Get name of current script in Python
... you want to omit the directory part (which might be present), you can use os.path.basename(__file__).
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Get a filtered list of files in a directory
... Oh, I just noticed that the Python docs say glob() "is done by using the os.listdir() and fnmatch.fnmatch() functions in concert, and not by actually invoking a subshell". In other words, glob() doesn't have the efficiency improvements one might expect.
– Ben Hoyt
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Set environment variables on Mac OS X Lion
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First, one thing to recognize about OS X is that it is built on Unix. This is where the .bash_profile comes in. When you start the Terminal app in OS X you get a bash shell by default. The bash shell comes from Unix and when it loads it runs the .bash_profile s...