此題目涉及到Python對進程的操作、for循環計數循環次數、排序與打印表格等，題目比較簡單，效果圖如下：
代碼如下：
#!/usr/bin/python
# encoding: utf-8
# -*- coding: utf8 -*-
"""
Created by PyCharm.
File: LinuxBashShellScriptForOps:performanceOps.py
User: Guodong
Create Date: 2016/9/21
Create Time: 18:11
"""
import psutil
import prettytable
ps_result = list()
for proc in psutil.process_iter():
ps_result.append({'name': proc.name(), 'pid': proc.pid, 'cpu_percent': proc.cpu_percent(),
'memory_percent': proc.memory_percent()})
table = prettytable.PrettyTable()
table.field_names = ["No.", "Name", "pid", "Memory percent"]
for i, item in enumerate(sorted(ps_result, key=lambda x: x['memory_percent'], reverse=True)):
table.add_row([i + 1, item['name'], item['pid'], format(item['memory_percent'] / 100, '.2%')])
if i >= 9:
break
print table代碼也可以從GitHub上獲取，https://github.com/DingGuodong/LinuxBashShellScriptForOps/blob/master/functions/process/performanceOps.py
其中用到了兩個主要的第三方模塊，psutil（用於獲取進程信息）和prettytable（用於打印表格），Windows和Linux系統上均可使用，如果提示“ImportError: No module named xxxx”，則可以執行命令pip install xxxx或者easy_install xxxx。
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