Question

当我在交互式会话中运行时，Pexpect工作正常，但如果它有彩色文本，那么它只与文本匹配，它与文本和ansi颜色匹配。这方面的正则表达式非常复杂和庞大。有人可以建议我如何使用它。

例如：

而不只是寻找：

＆＃34; opendaylight用户@根＆＃34;

寻找：

＆＃34;或＆＃39; \ x1b [1mlogout \ x1b [0m＆＃39;去关机   OpenDaylight。\ r \ r \ n \ r \ n \ X1B。\ r \ r \ n
  \ r \ n \ X1B [36mopendaylight用户\ X1B [0米\ X1B [1分@ \ X1B [0米\ X1B [34mroot \ X1B [0米＆GT;＆＃34;

这只是表达的一部分。

import pexpect
import os
def ex1():
      os.chdir("opendaylight/distribution-karaf-0.3.4-Lithium-SR4/bin/")
      child=pexpect.spawn("./karaf clean",cwd="/home/ubuntu/opendaylight/distribution-karaf-0.3.4-Lithium-SR4/bin/") 
      child.expect("opendaylight-user@root>")
      print child.before
ex1()

错误

   Traceback (most recent call last):
   File "ex07.py", line 11, in <module>
   ex1()
   File "ex07.py", line 9, in ex1
   child.expect("opendaylight-user@root>")
   File "/usr/local/lib/python2.7/dist-packages/pexpect/spawnbase.py", line 321, in expect
   timeout, searchwindowsize, async)
   File "/usr/local/lib/python2.7/dist-packages/pexpect/spawnbase.py", line 345, in expect_list
   return exp.expect_loop(timeout)
   File "/usr/local/lib/python2.7/dist-packages/pexpect/expect.py", line 107, in expect_loop
   return self.timeout(e)
   File "/usr/local/lib/python2.7/dist-packages/pexpect/expect.py", line 70, in timeout
   raise TIMEOUT(msg)
   pexpect.exceptions.TIMEOUT: Timeout exceeded.
   <pexpect.pty_spawn.spawn object at 0x7f2c5ca8ae10>
   command: ./karaf
   args: ['./karaf', 'clean']
   buffer (last 100 chars): " or '\x1b[1mlogout\x1b[0m' to shutdown     OpenDaylight.\r\r\n\r\n\x1b[36mopendaylight-user\x1b[0m\x1b[1m@\x1b[0m\x1b[34mroot\x1b[0m>"
   before (last 100 chars): " or '\x1b[1mlogout\x1b[0m' to shutdown  OpenDaylight.\r\r\n\r\n\x1b[36mopendaylight-  user\x1b[0m\x1b[1m@\x1b[0m\x1b[34mroot\x1b[0m>"
    after: <class 'pexpect.exceptions.TIMEOUT'>
    match: None
    match_index: None
    exitstatus: None
    flag_eof: False
    pid: 20699
    child_fd: 5
    closed: False
    timeout: 30
    delimiter: <class 'pexpect.exceptions.EOF'>
    logfile: None
    logfile_read: None
    logfile_send: None
    maxread: 2000
    searchwindowsize: None
    delaybeforesend: 0.05
    delayafterclose: 0.1
    delayafterterminate: 0.1
    searcher: searcher_re:
    0: re.compile("opendaylight-user@root>")

Answer 1

我通过使用expect_exact（）而不是expect（）得到了答案。 expect（）与正则表达式匹配，但expect_exact与字符串匹配。

  import pexpect
  import os
  def ex1():
      os.chdir("opendaylight/distribution-karaf-0.3.4-Lithium-SR4/bin/")
      child=pexpect.spawn("./karaf clean",cwd="/home/ubuntu/opendaylight/distribution-karaf-0.3.4-Lithium-SR4/bin/") 
      child.expect_exact("\x1b[36mopendaylight-user\x1b[0m\x1b[1m@\x1b[0m\x1b[34mroot\x1b[0m>")
      print child.before
  ex1()

如何使用彩色文本运行终端的pexpect脚本

1 个答案: