python - 通过PID获取进程名

Question

这应该很简单，但我只是没有看到它。

如果我有进程 ID，我如何使用它来获取有关进程的信息，例如进程名称。

Answer 1

在 Linux 下，你可以读取 proc 文件系统。文件/proc/<pid>/cmdline包含命令行。

Answer 2

尝试 PSUtil -> https://github.com/giampaolo/psutil

我记得在 Windows 和 Unix 上运行良好。

Answer 3

对于 Windows

一种无需下载任何模块即可获取计算机上所有程序 pid 的方法：

import os

pids = []
a = os.popen("tasklist").readlines()
for x in a:
      try:
         pids.append(int(x[29:34]))
      except:
           pass
for each in pids:
         print(each)

如果您只想要一个程序或所有具有相同名称的程序，并且想要终止该进程或其他东西：

import os, sys, win32api

tasklistrl = os.popen("tasklist").readlines()
tasklistr = os.popen("tasklist").read()

print(tasklistr)

def kill(process):
     process_exists_forsure = False
     gotpid = False
     for examine in tasklistrl:
            if process == examine[0:len(process)]:
                process_exists_forsure = True
     if process_exists_forsure:
         print("That process exists.")
     else:
        print("That process does not exist.")
        raw_input()
        sys.exit()
     for getpid in tasklistrl:
         if process == getpid[0:len(process)]:
                pid = int(getpid[29:34])
                gotpid = True
                try:
                  handle = win32api.OpenProcess(1, False, pid)
                  win32api.TerminateProcess(handle, 0)
                  win32api.CloseHandle(handle)
                  print("Successfully killed process %s on pid %d." % (getpid[0:len(prompt)], pid))
                except win32api.error as err:
                  print(err)
                  raw_input()
                  sys.exit()
    if not gotpid:
       print("Could not get process pid.")
       raw_input()
       sys.exit()

   raw_input()
   sys.exit()

prompt = raw_input("Which process would you like to kill? ")
kill(prompt)

这只是我的进程终止程序的粘贴，我可以让它变得更好，但没关系。

Answer 4

使用 psutil，这是我能给你的最简单的代码：

import psutil

# The PID ID of the process needed
pid_id = 1216

# Informations of the Process with the PID ID
process_pid = psutil.Process(pid_id)
print(process_pid)
# Gives You PID ID, name and started date
# psutil.Process(pid=1216, name='ATKOSD2.exe', started='21:38:05')

# Name of the process
process_name = process_pid.name()

Answer 5

试试这个

def filter_non_printable(str):
    ret=""
    for c in str:
        if ord(c) > 31 or ord(c) == 9:
            ret += c
        else:
            ret += " "
    return ret

#
# Get /proc/<cpu>/cmdline information
#
def pid_name(self, pid):
    try:
        with open(os.path.join('/proc/', pid, 'cmdline'), 'r') as pidfile:
            return filter_non_printable(pidfile.readline())

    except Exception:
        pass
        return