In pure Python, you can use os.nice and shutil.copy (or shutil.copyfile if you do not need to preserve file metadata):
import os
import shutil
os.nice(9)
shutil.copy('/var/tmp/1', '/var/tmp/2')
题
How to use nice in python ?
I have a simple bash script:
nice -n 9 cp /var/tmp/1 /var/tmp/2
What will be python alternative?
解决方案
In pure Python, you can use os.nice and shutil.copy (or shutil.copyfile if you do not need to preserve file metadata):
import os
import shutil
os.nice(9)
shutil.copy('/var/tmp/1', '/var/tmp/2')
其他提示
Of course, there's always os.system
:
os.system("nice -n 9 cp /var/tmp/1 /var/tmp/2")
A nicer solution is to use os.nice
with preexec_fn
:
import subprocess, os
subprocess.Popen("cp /var/tmp/1 /var/tmp/2", shell=True, preexec_fn=lambda: os.nice(9))