[英]Pexpect: Could not set shell prompt
I have referred a python script from https://pexpect.readthedocs.io/en/stable/api/pxssh.html in order to perform a ssh password based login.我从https://pexpect.readthedocs.io/en/stable/api/pxssh.html引用了一个 python 脚本,以便执行基于 ssh 密码的登录。 Code is as follows:
代码如下:
from pexpect import pxssh
import getpass
try:
s = pxssh.pxssh()
hostname = input('hostname: ')
username = input('username: ')
password = getpass.getpass('password: ')
s.login(hostname, username, password)
s.sendline('uptime') # run a command
s.prompt() # match the prompt
print(s.before) # print everything before the prompt.
s.sendline('ls -l')
s.prompt()
print(s.before)
s.sendline('df')
s.prompt()
print(s.before)
s.logout()
except pxssh.ExceptionPxssh as e:
print("pxssh failed on login.")
print(e)
When i run the code, it prompts for hostname, username and password.当我运行代码时,它会提示输入主机名、用户名和密码。 After these inputs are provided through CLI,the ssh login fails with the exception as follows:
通过 CLI 提供这些输入后,ssh 登录失败,异常如下:
could not set shell prompt (received: b"unset PROMPT_COMMAND\r\nPS1='[PEXPECT]\\$ '\r\nUser1@167.254.225.14's password: \r\nUser1@167.254.225.14's password: ", expected: '\\[PEXPECT\\][\\$\\#] ').
The manual login works fine for the same ssh credentials.手动登录适用于相同的 ssh 凭据。
Note:
Python version: 3.6
Pexpect version: 4.7
The error was due to login_timeout which is by default 10 sec.该错误是由于 login_timeout 造成的,默认情况下为 10 秒。 Setting high login_timeout in login() solved the problem.
在 login() 中设置高 login_timeout 解决了这个问题。
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