python 执行系统命令比较
转载自：http://purpen.javaeye.com/blog/98095
python 执行系统命令比较
关键字: python os system 系统命令
在此比较一下两种方法执行系统命令的方法,以方便于日后运用:(
1. os.system()
system(command) -> exit_status
Execute the command (a string) in a subshell.
# 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..
>>> os.system('ls') #如果再命令行下执行,结果直接打印出来
04101419778.CHM bash document media py-django video
11.wmv books downloads Pictures python
all-20061022 Desktop Examples project tools
2.os.popen()
popen(command [, mode='r' [, bufsize]]) -> pipe
Open a pipe to/from a command returning a file object.
# 此种方法不但执行命令还返回执行后的信息对象
>>>tmp = os.popen('ls *.py').readlines()
>>>tmp
Out[21]:
['dump_db_pickle.py\n',
'dump_db_pickle_recs.py\n',
'dump_db_shelve.py\n',
'initdata.py\n',
'__init__.py\n',
'make_db_pickle.py\n',
'make_db_pickle_recs.py\n',
'make_db_shelve.py\n',
'peopleinteract_query.py\n',
'reader.py\n',
'testargv.py\n',&n
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