Python中执行系统命令常见方法有两种:


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
02 >>>tmp
04 ['dump_db_pickle.py ',
06 'dump_db_shelve.py ',
08 '__init__.py ',
10 'make_db_pickle_recs.py ',
12 'peopleinteract_query.py ',
14 'testargv.py ',
16 'update_db_pickle.py ',
2 >>> subprocess.call (["cmd""arg1""arg2"],shell=True)

获取返回和输出:

1 import subprocess
3 for line in p.stdout.readlines():
5 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)

8 UnicodeEncodeError: 'ascii' codec can't encode characters in position 46-52: ordinal not inrange(128)