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How to duplicate sys.stdout to a log file?
....6, see below for
# an updated 3.3+-compatible version.
import subprocess, os, sys
# Unbuffer output (this ensures the output is in the correct order)
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
tee = subprocess.Popen(["tee", "log.txt"], stdin=subprocess.PIPE)
os.dup2(tee.stdin.fileno(), s...
Rename multiple files in a directory in Python [duplicate]
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Use os.rename(src, dst) to rename or move a file or a directory.
$ ls
cheese_cheese_type.bar cheese_cheese_type.foo
$ python
>>> import os
>>> for filename in os.listdir("."):
... if filename.startswith("chee...
记录一些Mac OS X技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
记录一些Mac OS X技巧用了几个月Mac OS X，发现很多东西不记录下来就会找不到，于是就有了这篇日志。重启Finder有些设置更改以后需要重启Finder才能生效，最简...用了几个月Mac OS X，发现很多东西不记录下来就会找不到，于是就有...
Installing PG gem on OS X - failure to build native extension
...any others have had problems installing the pg gem. None of the solutions posed for others have worked for me.
15 Answers
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How can I check the extension of a file?
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os.path provides many functions for manipulating paths/filenames. (docs)
os.path.splitext takes a path and splits the file extension from the end of it.
import os
filepaths = ["/folder/soundfile.mp3", "folder1/folder/sound...
Python Script execute commands in Terminal
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There are several ways to do this:
A simple way is using the os module:
import os
os.system("ls -l")
More complex things can be achieved with the subprocess module:
for example:
import subprocess
test = subprocess.Popen(["ping","-W","2","-c", "1", "192.168.1.70"], stdout=subprocess...
Assign output of os.system to a variable and prevent it from being displayed on the screen [duplicat
I want to assign the output of a command I run using os.system to a variable and prevent it from being output to the screen. But, in the below code ,the output is sent to the screen and the value printed for var is 0, which I guess signifies whether the command ran successfully or not. Is there ...
How to call an external command?
...ficial documentation recommends the subprocess module over the alternative os.system():
The subprocess module provides more powerful facilities for spawning new processes and retrieving their results; using that module is preferable to using this function [os.system()].
The Replacing Older Fun...
Correct approach to global logging in Golang
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Create a single log.Logger and pass it around?
That is possible. A log.Logger can be used concurrently from multiple goroutines.
Pass around a pointer to that log.Logger?
log.New returns a *Logger which is usually an indication that you should pass the object around as...
python: Change the scripts working directory to the script's own directory
...ent working directory to so that opening relative paths will work:
import os
os.chdir("/home/udi/foo")
However, you asked how to change into whatever directory your Python script is located, even if you don't know what directory that will be when you're writing your script. To do this, you can u...