Share Python to print a list of the top 10 programs that occupy memory in the form of a table

This question involves Pythonoperations on processes, for loopscounting the number of loops, sorting and printingtables, etc. The question is relatively simple, and the renderings are as follows ：

The code is as follows:

#!/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

Two main third-party modules are used, psutil (for Obtain process information) and prettytable (used to print tables), can be used on both Windows and Linux systems. If the prompt "ImportError: No module named xxxx" is prompted, you can execute the command pip install xxxx or easy_install xxxx.

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