我需要使用python脚本/自动化交互式终端客户端。客户端接受三个参数并运行如下:
>./myclient <arg1> <arg2> <arg3>
Welcome...
blah...
blah..
[user input]
some more blah... blah... for the input entered
blah..
blah..
[basically it accepts input and puts the output in the console until the user types 'quit']
现在我需要在python中自动执行此操作,并将控制台输出保存在文件中。
对此有任何帮助,我们非常感谢......
答案 0 :(得分:6)
您可以查看http://docs.python.org/library/cmd.html。
示例代码:
import cmd
import sys
class Prompt(cmd.Cmd):
def __init__(self, stufflist=[]):
cmd.Cmd.__init__(self)
self.prompt = '>>> '
self.stufflist = stufflist
print "Hello, I am your new commandline prompt! 'help' yourself!"
def do_quit(self, arg):
sys.exit(0)
def do_print_stuff(self, arg):
for s in self.stufflist:
print s
p = Prompt(sys.argv[1:])
p.cmdloop()
示例测试:
$ python cmdtest.py foo bar
Hello, I am your new commandline prompt! 'help' yourself!
>>> help
Undocumented commands:
======================
help print_stuff quit
>>> print_stuff
foo
bar
>>> quit
为了将输出保存到文件中,您可以使用例如此类编写通常用于stdout的文件:
class Tee(object):
def __init__(self, out1, out2):
self.out1 = out1
self.out2 = out2
def write(self, s):
self.out1.write(s)
self.out2.write(s)
def flush(self):
self.out1.flush()
self.out2.flush()
你可以像这样使用它:
with open('cmdtest.out', 'w') as f:
# write stdout to file and stdout
t = Tee(f, sys.stdout)
sys.stdout = t
问题是通过stdin读取的命令不会出现在此输出中,但我相信这很容易解决。
答案 1 :(得分:6)
你可能想要使用pexpect(这是古老的python版本的古老版本。)
import pexpect
proc = pexpect.spawn('./myclient <arg1> <arg2> <arg3>')
proc.logfile = the_logfile_you_want_to_use
proc.expect(['the string that tells you that myclient is waiting for input'])
proc.sendline('line you want to send to myclient')
proc.expect(['another line you want to wait for'])
proc.sendline('quit') # for myclient to quit
proc.expect([pexpect.EOF])
这样的事情应该足以解决你的情况。虽然pexpect能够提供更多功能,但请阅读文档以获取更多高级用例。