python - win32pdh.EnumObjectItems 调用错误

Question

我在 Windows 7 中运行 Python 2.7，安装了 pywin32-216-win32-py2.7。我正在运行以下代码，它在一台计算机上运行良好，但在另一台计算机上输出错误(Win7、Py2.7、相同的 pywin 库)。

错误信息:

File "C:\Energy\Support Sheets\Kill Excel.py", line 9, in GetProcessID items, instances = win32pdh.EnumObjectItems( None, None, object, win32pdh.PERF_DETAIL_WIZARD ) error: (-1073738824, 'EnumObjectItems for buffer size', 'The specified object was not found on the computer.')

完整代码:

import win32api, win32con
import win32pdh
import os
import signal
import time

def GetProcessID( name ) :
    object = "Process"
    items, instances = win32pdh.EnumObjectItems( None, None, object, win32pdh.PERF_DETAIL_WIZARD )
    val = None
    if name in instances :
        hq = win32pdh.OpenQuery()
        hcs = [ ]
        item = "ID Process"
        path = win32pdh.MakeCounterPath( ( None, object, name, None, 0, item ) )
        hcs.append( win32pdh.AddCounter( hq, path ) )
        win32pdh.CollectQueryData( hq )
        time.sleep( 0.01 )
        win32pdh.CollectQueryData( hq )

        for hc in hcs:
            type, val = win32pdh.GetFormattedCounterValue( hc, win32pdh.PDH_FMT_LONG )
            win32pdh.RemoveCounter( hc )
        win32pdh.CloseQuery( hq )
        return val

def Kill_Process_pid(pid):
  handle = win32api.OpenProcess(win32con.PROCESS_TERMINATE, 0, pid) #get process handle
  win32api.TerminateProcess(handle, -1) #kill by handle
  win32api.CloseHandle(handle)        #close api

def Kill_Process(name):
    pid = GetProcessID(name)
    if pid:
        try:
            Kill_Process_pid(pid)
            return True
        except:
            pass
    else:
        return False

# MAIN FUNCTION
print 'Killing Excel instances...',
while Kill_Process('EXCEL'):
   time.sleep(0.2)
print 'Done!'

Answer 1

当进程性能计数器被禁用时，我遇到了同样的问题 - 显然这可能会发生。有说明here了解如何重新启用计数器。如果您无法在机器上安装软件，您可以运行 regedit 并搜索名为“Disable Performance Counters”的键并将其删除。

之后，您可能需要以管理员身份在 cmd shell 上运行“lodctr/R”以重新加载性能计数器，然后才能正常工作。