Pyhton之subprocess模块和configparser模块

一、subprocess模式

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# import os

# while True:

#     cmd=input('>>').strip()

#     if not cmd:continue

#     if cmd=='q':break

#     os.system(cmd)

 

import subprocess

obj=subprocess.Popen('dir',

                     shell=True,

                     stdout=subprocess.PIPE,

                     stderr=subprocess.PIPE

                     )

res1=obj.stdout.read()

res3=obj.stdout.read()

res2=obj.stderr.read()

print('right:',res1.decode('gbk'))

print('error:',res2.decode('gbk'))

 

print('res3:',res3.decode('gbk'))

二、configparser模块

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import configparser

 

config=configparser.ConfigParser()

config.read('a.cfg',encoding='utf-8')

 

 

#删除整个标题section2

config.remove_section('section2')

 

#删除标题section1下的某个k1和k2

config.remove_option('section1','k1')

config.remove_option('section1','k2')

 

#判断是否存在某个标题

print(config.has_section('section1'))

 

#判断标题section1下是否有user

print(config.has_option('section1',''))

 

 

#添加一个标题

config.add_section('egon')

 

#在标题egon下添加name=egon,age=18的配置

config.set('egon','name','egon')

config.set('egon','age',18) #报错,必须是字符串

 

 

#最后将修改的内容写入文件,完成最终的修改

config.write(open('a.cfg','w'))