这是我用来将进程设置为低于正常优先级的解决方案：
def lowpriority():
""" Set the priority of the process to below-normal."""
import sys
try:
sys.getwindowsversion()
except AttributeError:
isWindows = False
else:
isWindows = True
if isWindows:
# Based on:
# "Recipe 496767: Set Process Priority In Windows" on ActiveState
# http://code.activestate.com/recipes/496767/
import win32api,win32process,win32con
pid = win32api.GetCurrentProcessId()
handle = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, True, pid)
win32process.SetPriorityClass(handle, win32process.BELOW_NORMAL_PRIORITY_CLASS)
else:
import os
os.nice(1)
在Windows和Linux上的Python 2.6上进行了测试。
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