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
2 |
04101419778.CHM bash document media py-django video
|
3 |
11.wmv books downloads Pictures python
|
4 |
all-20061022 Desktop Examples project tools
|
(2) os.popen
# 该方法不但执行命令还返回执行后的信息对象
popen(command [, mode='r' [, bufsize]]) -> pipe
Open a pipe to/from a command returning a file object.
例如:
01 |
>>>tmp = os.popen('ls *.py').readlines()
|
04 |
['dump_db_pickle.py ',
|
05 |
'dump_db_pickle_recs.py ',
|
10 |
'make_db_pickle_recs.py ',
|
12 |
'peopleinteract_query.py ',
|
16 |
'update_db_pickle.py ',
|
好处在于:将返回的结果赋于一变量,便于程序的处理。
(3) 使用模块subprocess
2 |
>>> subprocess.call (["cmd", "arg1", "arg2"],shell=True)
|
获取返回和输出:
2 |
p = subprocess.Popen('ls', shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
|
3 |
for line in p.stdout.readlines():
|
(4) 使用模块commands模块
3 |
['__all__', '__builtins__', '__doc__', '__file__', '__name__', 'getoutput', 'getstatus','getstatusoutput', 'mk2arg', 'mkarg']
|
4 |
>>> commands.getoutput("date")
|
5 |
'Wed Jun 10 19:39:57 CST 2009' |
7 |
>>> commands.getstatusoutput("date")
|
8 |
(0, 'Wed Jun 10 19:40:41 CST 2009')
|
注意: 当执行命令的参数或者返回中包含了中文文字,那么建议使用subprocess,如果使用os.popen则会出现下面的错误:
1 |
Traceback (most recent call last): |
2 |
File "./test1.py", line 56, in <module>
|
4 |
File "./test1.py", line 45, in main
|
6 |
File "./mailfax/Fax.py", line 13, in sendFax
|
8 |
UnicodeEncodeError: 'ascii' codec can't encode characters in position 46-52: ordinal not inrange(128)
|
关于本文更多的延伸阅读地址:
http://zh-cn.how-to.mobi/index.php?id=89228
http://www.javaeye.com/topic/406623
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
2 |
04101419778.CHM bash document media py-django video
|
3 |
11.wmv books downloads Pictures python
|
4 |
all-20061022 Desktop Examples project tools
|
(2) os.popen
# 该方法不但执行命令还返回执行后的信息对象
popen(command [, mode='r' [, bufsize]]) -> pipe
Open a pipe to/from a command returning a file object.
例如:
01 |
>>>tmp = os.popen('ls *.py').readlines()
|
04 |
['dump_db_pickle.py ',
|
05 |
'dump_db_pickle_recs.py ',
|
10 |
'make_db_pickle_recs.py ',
|
12 |
'peopleinteract_query.py ',
|
16 |
'update_db_pickle.py ',
|
好处在于:将返回的结果赋于一变量,便于程序的处理。
(3) 使用模块subprocess
2 |
>>> subprocess.call (["cmd", "arg1", "arg2"],shell=True)
|
获取返回和输出:
2 |
p = subprocess.Popen('ls', shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
|
3 |
for line in p.stdout.readlines():
|
(4) 使用模块commands模块
3 |
['__all__', '__builtins__', '__doc__', '__file__', '__name__', 'getoutput', 'getstatus','getstatusoutput', 'mk2arg', 'mkarg']
|
4 |
>>> commands.getoutput("date")
|
5 |
'Wed Jun 10 19:39:57 CST 2009' |
7 |
>>> commands.getstatusoutput("date")
|
8 |
(0, 'Wed Jun 10 19:40:41 CST 2009')
|
注意: 当执行命令的参数或者返回中包含了中文文字,那么建议使用subprocess,如果使用os.popen则会出现下面的错误:
1 |
Traceback (most recent call last): |
2 |
File "./test1.py", line 56, in <module>
|
4 |
File "./test1.py", line 45, in main
|
6 |
File "./mailfax/Fax.py", line 13, in sendFax
|
8 |
UnicodeEncodeError: 'ascii' codec can't encode characters in position 46-52: ordinal not inrange(128)
|
关于本文更多的延伸阅读地址:
http://zh-cn.how-to.mobi/index.php?id=89228
http://www.javaeye.com/topic/406623