在python中获取系统状态

Question

有没有办法在python中获取系统状态,例如可用内存量,正在运行的进程,cpu加载等等.我知道在linux上我可以从/ proc目录中获取它,但我想在unix和windows上也这样做.

Answer 1

我不知道目前支持Linux和Windows的任何此类库/包.有一些libstatgrab似乎没有非常积极地开发(它已经支持了各种各样的Unix平台)和非常活跃的PSI(Python系统信息),它可以在AIX,Linux,SunOS和Darwin上运行.这两个项目都旨在将来某个时候提供Windows支持.祝好运.

Answer 2

我认为还没有一个跨平台的库(肯定应该有一个)

但是,我可以为您提供一个片段,用于从/proc/statLinux下获取当前的CPU负载:

编辑:用稍微更加pythonic和文档代码替换可怕的未记录代码

import time

INTERVAL = 0.1

def getTimeList():
    """
    Fetches a list of time units the cpu has spent in various modes
    Detailed explanation at http://www.linuxhowtos.org/System/procstat.htm
    """
    cpuStats = file("/proc/stat", "r").readline()
    columns = cpuStats.replace("cpu", "").split(" ")
    return map(int, filter(None, columns))

def deltaTime(interval):
    """
    Returns the difference of the cpu statistics returned by getTimeList
    that occurred in the given time delta
    """
    timeList1 = getTimeList()
    time.sleep(interval)
    timeList2 = getTimeList()
    return [(t2-t1) for t1, t2 in zip(timeList1, timeList2)]

def getCpuLoad():
    """
    Returns the cpu load as a value from the interval [0.0, 1.0]
    """
    dt = list(deltaTime(INTERVAL))
    idle_time = float(dt[3])
    total_time = sum(dt)
    load = 1-(idle_time/total_time)
    return load


while True:
    print "CPU usage=%.2f%%" % (getCpuLoad()*100.0)
    time.sleep(0.1)

Answer 3

https://pypi.python.org/pypi/psutil

import psutil
psutil.get_pid_list()
psutil.virtual_memory()
psutil.cpu_times()

等等