Python中执行系统命令常见方法有两种：

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Python中执行系统命令常见方法有两种：

http://www.cnblogs.com/xuxm2007/archive/2011/01/17/1937220.html
两者均需 import os

(1) os.system

# 仅仅在一个子终端运行系统命令，而不能获取命令执行后的返回信息

system(command) -> exit_status
Execute the command (a string) in a subshell.

# 如果再命令行下执行，结果直接打印出来

  1 >>> os.system('ls')
 

  3 11.wmv            books     downloads   Pictures  python
 

>>>tmp
 
['dump_db_pickle.py ',
 
'dump_db_shelve.py ',
 
'__init__.py ',
 
'make_db_pickle_recs.py ',
 
'peopleinteract_query.py ',
 
'testargv.py ',
 
'update_db_pickle.py ',
 
>>> subprocess.call (["cmd", "arg1", "arg2"],shell=True)
 
 获取返回和输出:
import subprocess
 
for line in p.stdout.readlines():
 
retval = p.wait()

(4) 使用模块commands模块

  1 >>> import commands
 

  3 ['__all__', '__builtins__', '__doc__', '__file__', '__name__', 'getoutput', 'getstatus','getstatusoutput', 'mk2arg', 'mkarg']
 

  5 'Wed Jun 10 19:39:57 CST 2009'
 

  7 >>> commands.getstatusoutput("date")
 

查看源代码 打印   1 Traceback (most recent call last):
 
  3     main()
 
  5     fax.sendFax()
 
  7     os.popen(cmd)
 
 <div style='border-width: 0px !important; border-style: solid; border-color: rgb(0, 153, 255); margin: 0px !important; padding: 0px !important; left: auto !important; top: auto !important; width: auto !important; height: auto !important; text-align: left !important; right: auto !important; bottom: auto !important; line-height: 1.1em !important; font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace !important; font-size: 1em !important; font-style: normal !important; font-weight: normal !important; vertical-align: baseline !important; float: none !important; position: static !important; direction: ltr !important; outline-width: 0px !important; background-image: none !important; background-color: rgb(248, 248, 248) !important;' alt2"="">  8 UnicodeEncodeError: 'ascii' codec can't encode characters in position 46-52: ordinal not inrange(128)