pxssh远程执行命令出错处理

测试环境： Ubuntu12.04

python-pexpect安装： apt-get install python-pexpect

测试脚本：

#!/usr/bin/env python
import pxssh
import getpass
try:
    s = pxssh.pxssh()
    hostname = raw_input(‘hostname: ‘)
    username = raw_input(‘username: ‘)
    password = getpass.getpass(‘please input password: ‘)
    s.login(hostname, username, password)
    s.sendline(‘uptime‘)
    s.prompt()
    print s.before
    s.sendline(‘ls -l‘)
    s.prompt()
    print s.before
    s.sendline(‘df‘)
    s.prompt()
    print s.before
    s.logout()
except pxssh.ExceptionPxssh, e:
    print "pxssh failed on login."
    print str(e)

执行时会报错：

Traceback (most recent call last):

File "pxsshsimple1.py", line 9, in <module>

s.login (hostname, username, password)

File "/usr/lib/python2.7/dist-packages/pxssh.py", line 243, in login

if not self.synch_original_prompt():

File "/usr/lib/python2.7/dist-packages/pxssh.py", line 134, in synch_original_prompt

self.read_nonblocking(size=10000,timeout=1) # GAS: Clear out the cache before getting the prompt

File "/usr/lib/python2.7/dist-packages/pexpect.py", line 824, in read_nonblocking

raise TIMEOUT (‘Timeout exceeded in read_nonblocking().‘)

pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().

修改/usr/lib/python2.7/dist-packages/pxssh.py文件，在line134行前增加：

        self.sendline()
        time.sleep(0.5)