Question

我正在编写一个可以通过SSH连接到设备，运行命令并将数据解析为文件的脚本。我用Pyparsing和Exscript编写了这个，然后我发现我将使用它的设备是使用Python 2.4.4和Debian 4.1.1所以模块不能用于此。现在我回到绘图板试图找出如何使用 NO 模块执行此操作。任何人都有任何参考或指出我正确的方向吗？先感谢您。

这是我的代码：

from Exscript.util.interact import read_login
from Exscript.protocols import SSH2
import uuid
from pyparsing import *
import re
import yaml

account = read_login()              
conn = SSH2()                       
conn.connect('172.0.0.1')     
conn.login(account)           

conn.execute('foobar')
data = conn.response
conn.send('exit\r')               
conn.close()

###### PARSER ######

date_regex = re.compile(r'\d\d-\d\d-\d\d')
time_regex = re.compile(r'\d\d:\d\d:\d\d')
pairs = [{'category': 'General Information',
          'kv': Group(Word(alphanums) + Word(alphanums))},
         {'category': 'Last Reset:',
          'kv': Group(Word(alphas, max=1) + Word(alphas)) + Literal(':').suppress()
                + Group(Regex(date_regex) + Regex(time_regex)
                + Optional(SkipTo(LineEnd())))
          }
         ]
# build list of categories with associated parsing rules
categories = [Word("# ").suppress() + x['category']
               + OneOrMore(Group(x['kv']))
              for x in pairs]
# account for thing you don't have specific rules for
categories.append(Word("#").suppress() + Optional(SkipTo(LineEnd())) +
                  Group(OneOrMore(Combine(Word(alphanums) + SkipTo(LineEnd()))))
                  )
# OR all the categories together
categories_ored = categories[0]
for c in categories[1:]:
    categories_ored |= c
configDef = OneOrMore(categories_ored)
suppress_tokens = ["show all", "SSH>", "Active System Configuration"]
suppresses = [Literal(x).suppress() for x in suppress_tokens]
for s in suppresses:
    configDef.ignore(s)

result = configDef.parseString(data)
for e in result:
    print(e)
with open('/Users/MyMac/development/data.yml', 'w') as outfile:
        outfile.write( yaml.dump(e))

更新

我已遵循以下建议，现在安装了Pexpect，并找到了我已安装的Python-Pyparsing旧版本。所以我再次开始使用我的脚本来处理模块。谢谢！

Answer 1

看起来这已经解决了，但是......

只要为此主机配置了SSH（或主机不要求您登录），您就应该能够执行以下操作。

import os

""" This will execute foobar on the remote host 
and store the command output to a text file
on your machine.""" 
os.system("ssh 172.0.0.1 foobar > ~/data.txt")

""" Commence processing """
data = open("data.txt", mode='r')
# and so on and so on

您也可以使用subprocess库，但os.system这些类型的任务是最简单的IMO。

使用Python来ssh没有模块

1 个答案: