无法将2个变量传递给pexpect;字符串索引必须是整数，而不是str

Question

试图从无线控制器中提取数据。命令是show ap auto-rf band可以是802.11a 802.11b或802.11-abgn ap-name是任意的

样本输出：

（思科控制器）> show ap auto-rf 802.11-abgn Hallway38

Number Of Slots.................................. 2 
AP Name.......................................... Hallway38
MAC Address...................................... a0:e0:af:33:d0:bc
  Slot ID........................................ 0
  Radio Type..................................... RADIO_TYPE_80211abgn
  Current TX/RX Band............................. 80211 2.4G band
  Sub-band Type.................................. All
  Noise Information
    Noise Profile................................ PASSED
    Channel 1....................................  -90 dBm
    Channel 2....................................  -77 dBm
    Channel 3....................................  -88 dBm
    Channel 4....................................  -93 dBm
    Channel 5....................................  -91 dBm
    Channel 6....................................  -88 dBm
    Channel 7....................................  -93 dBm

错误输出：文件“./wlc-auto-rf.py”，第34行，在child.sendline中（'show ap auto-rf'['radio'] ['apname']）TypeError：字符串索引必须是整数，不是str

任何帮助表示赞赏。

here is the script:
              !/usr/bin/python 
              #
              #       requires python pexpect module
              #
              import pexpect
              import sys
             firstarg=sys.argv[0]
             address=sys.argv[1]
             username=sys.argv[2]
             password=sys.argv[3]
             radio=sys.argv[4]
             apname=sys.argv[5]
             output=sys.argv[6]

      child = pexpect.spawn ('ssh' , [address])
      child.expect ('User:')
      child.sendline (username)
      child.expect ('Password:')
      child.sendline (password)
      child.expect ("Controller")
      child.sendline ('config paging disable')
      #
      child.expect ("Controller")
      child.sendline ('show ap auto-rf' ['radio']['apname'])
      child.logfile = open(output , "w")
      child.expect ("Controller")
      child.sendline ('logout')
      child.expect('(y/N)')
      child.sendline ('N')
      child.expect(pexpect.EOF)

Answer 1

我能够使用字符串连接来修复它，将变量一起添加到一个字符串child.sendline（'show ap auto-rf'+ radio +''+ apname）