Python中的串联顺序错误，并覆盖部分字符串_Python_Loops_Concatenation_Paramiko_Overwrite

Python中的串联顺序错误，并覆盖部分字符串

python loops

Python中的串联顺序错误，并覆盖部分字符串,python,loops,concatenation,paramiko,overwrite,Python,Loops,Concatenation,Paramiko,Overwrite,我从Python脚本中得到一个奇怪的输出当在涉及Paramiko的实际执行的循环中运行代码时，它似乎颠倒了要打印的变量的顺序，同时覆盖了输出的开始要处理的所有源文本都是相同的。一个是通过Paramiko通过ssh从路由器抓取的，另一个是我手动抓取并粘贴为局部变量电流输出： with testis 10.8.11.72 from 10.8.11.72 (10.111.72.1) Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) wi

我从Python脚本中得到一个奇怪的输出

当在涉及Paramiko的实际执行的循环中运行代码时，它似乎颠倒了要打印的变量的顺序，同时覆盖了输出的开始

要处理的所有源文本都是相同的。一个是通过Paramiko通过ssh从路由器抓取的，另一个是我手动抓取并粘贴为局部变量

电流输出：

with testis 10.8.11.72 from 10.8.11.72 (10.111.72.1)

Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120

import paramiko

router_channel.send('sh ip bgp 10.23.24.32\n')
buff = ''
best_test =()
while not buff.endswith('#'):
    resp = router_channel.recv(99999)
    buff += resp
#DMVPN variable Declaration.
bgp_show = buff
bgp_list =  bgp_show.split('Local')
bgp_list.pop(0)
for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
            best_test = best_list[1]
        print '********'
        print buff
        print '********'
        print "Best Path is " + best_test + " with " + "test"
        print '********'

bgp_list =  bgp.split('Local')
bgp_list.pop(0)

#pprint.pprint( bgp_list )

#print bgp_list[2]

for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
        print '********'
        print bgp
        print '********'
        print "Best Path is " + best_list[1] + ' with' + local_pref
        print '********'

derp@localhost Test Python Scripts]$ python splitty1.py 
********
sh ip bgp 10.23.24.32 | exclude local
BGP routing table entry for 10.23.24.32/28, version 122378
  Advertised to update-groups:
     1          2          3          4          5          6          7         
     9         
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.111.72 from 10.8.111.72 (10.111.72.2)
      Origin IGP, metric 0, localpref 105, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.11.72 from 10.8.11.72 (10.111.72.1)
      Origin IGP, metric 0, localpref 110, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.11.73 from 10.8.11.73 (10.111.73.1)
      Origin IGP, metric 0, localpref 120, valid, internal, best
      rx pathid: 0, tx pathid: 0x0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.9.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.8.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.111.73 from 10.8.111.73 (10.111.73.2)
      Origin IGP, metric 0, localpref 115, valid, internal
      rx pathid: 0, tx pathid: 0
********
Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120
********
[derp@localhost Test Python Scripts]$

所需的输出和带有静态局部变量的输出：

with testis 10.8.11.72 from 10.8.11.72 (10.111.72.1)

Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120

import paramiko

router_channel.send('sh ip bgp 10.23.24.32\n')
buff = ''
best_test =()
while not buff.endswith('#'):
    resp = router_channel.recv(99999)
    buff += resp
#DMVPN variable Declaration.
bgp_show = buff
bgp_list =  bgp_show.split('Local')
bgp_list.pop(0)
for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
            best_test = best_list[1]
        print '********'
        print buff
        print '********'
        print "Best Path is " + best_test + " with " + "test"
        print '********'

bgp_list =  bgp.split('Local')
bgp_list.pop(0)

#pprint.pprint( bgp_list )

#print bgp_list[2]

for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
        print '********'
        print bgp
        print '********'
        print "Best Path is " + best_list[1] + ' with' + local_pref
        print '********'

derp@localhost Test Python Scripts]$ python splitty1.py 
********
sh ip bgp 10.23.24.32 | exclude local
BGP routing table entry for 10.23.24.32/28, version 122378
  Advertised to update-groups:
     1          2          3          4          5          6          7         
     9         
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.111.72 from 10.8.111.72 (10.111.72.2)
      Origin IGP, metric 0, localpref 105, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.11.72 from 10.8.11.72 (10.111.72.1)
      Origin IGP, metric 0, localpref 110, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.11.73 from 10.8.11.73 (10.111.73.1)
      Origin IGP, metric 0, localpref 120, valid, internal, best
      rx pathid: 0, tx pathid: 0x0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.9.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.8.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.111.73 from 10.8.111.73 (10.111.73.2)
      Origin IGP, metric 0, localpref 115, valid, internal
      rx pathid: 0, tx pathid: 0
********
Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120
********
[derp@localhost Test Python Scripts]$

我根本不知道为什么会这样。有关更多信息和执行，请参见下文帮助？

代码：

with testis 10.8.11.72 from 10.8.11.72 (10.111.72.1)

Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120

import paramiko

router_channel.send('sh ip bgp 10.23.24.32\n')
buff = ''
best_test =()
while not buff.endswith('#'):
    resp = router_channel.recv(99999)
    buff += resp
#DMVPN variable Declaration.
bgp_show = buff
bgp_list =  bgp_show.split('Local')
bgp_list.pop(0)
for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
            best_test = best_list[1]
        print '********'
        print buff
        print '********'
        print "Best Path is " + best_test + " with " + "test"
        print '********'

bgp_list =  bgp.split('Local')
bgp_list.pop(0)

#pprint.pprint( bgp_list )

#print bgp_list[2]

for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
        print '********'
        print bgp
        print '********'
        print "Best Path is " + best_list[1] + ' with' + local_pref
        print '********'

derp@localhost Test Python Scripts]$ python splitty1.py 
********
sh ip bgp 10.23.24.32 | exclude local
BGP routing table entry for 10.23.24.32/28, version 122378
  Advertised to update-groups:
     1          2          3          4          5          6          7         
     9         
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.111.72 from 10.8.111.72 (10.111.72.2)
      Origin IGP, metric 0, localpref 105, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.11.72 from 10.8.11.72 (10.111.72.1)
      Origin IGP, metric 0, localpref 110, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.11.73 from 10.8.11.73 (10.111.73.1)
      Origin IGP, metric 0, localpref 120, valid, internal, best
      rx pathid: 0, tx pathid: 0x0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.9.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.8.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.111.73 from 10.8.111.73 (10.111.73.2)
      Origin IGP, metric 0, localpref 115, valid, internal
      rx pathid: 0, tx pathid: 0
********
Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120
********
[derp@localhost Test Python Scripts]$

代码的执行：

dirp@localhost Test Python Scripts]$ python splice.py
    ********
    sh ip bgp 10.23.24.32
    BGP routing table entry for 10.23.24.32/28, version 367886
    Paths: (6 available, best #5, table default)
      Advertised to update-groups:
     1          2          3          4          5          6          7         
     9         
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.111.73 from 10.8.111.73 (10.111.73.2)
      Origin IGP, metric 0, localpref 105, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.11.72 from 10.8.11.72 (10.111.72.1)
      Origin IGP, metric 0, localpref 120, valid, internal, best
      rx pathid: 0, tx pathid: 0x0
  Refresh Epoch 3
  Local, (Received from a RR-client)
    10.8.11.73 from 10.8.11.73 (10.111.73.1)
      Origin IGP, metric 0, localpref 110, valid, internal
      rx pathid: 0, tx pathid: 0
router#
********
 With testis 10.8.11.72 from 10.8.11.72 (10.111.72.1)
********

静态代码：

with testis 10.8.11.72 from 10.8.11.72 (10.111.72.1)

Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120

import paramiko

router_channel.send('sh ip bgp 10.23.24.32\n')
buff = ''
best_test =()
while not buff.endswith('#'):
    resp = router_channel.recv(99999)
    buff += resp
#DMVPN variable Declaration.
bgp_show = buff
bgp_list =  bgp_show.split('Local')
bgp_list.pop(0)
for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
            best_test = best_list[1]
        print '********'
        print buff
        print '********'
        print "Best Path is " + best_test + " with " + "test"
        print '********'

bgp_list =  bgp.split('Local')
bgp_list.pop(0)

#pprint.pprint( bgp_list )

#print bgp_list[2]

for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
        print '********'
        print bgp
        print '********'
        print "Best Path is " + best_list[1] + ' with' + local_pref
        print '********'

derp@localhost Test Python Scripts]$ python splitty1.py 
********
sh ip bgp 10.23.24.32 | exclude local
BGP routing table entry for 10.23.24.32/28, version 122378
  Advertised to update-groups:
     1          2          3          4          5          6          7         
     9         
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.111.72 from 10.8.111.72 (10.111.72.2)
      Origin IGP, metric 0, localpref 105, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.11.72 from 10.8.11.72 (10.111.72.1)
      Origin IGP, metric 0, localpref 110, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.11.73 from 10.8.11.73 (10.111.73.1)
      Origin IGP, metric 0, localpref 120, valid, internal, best
      rx pathid: 0, tx pathid: 0x0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.9.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.8.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.111.73 from 10.8.111.73 (10.111.73.2)
      Origin IGP, metric 0, localpref 115, valid, internal
      rx pathid: 0, tx pathid: 0
********
Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120
********
[derp@localhost Test Python Scripts]$

在不将其放入循环但在本地分配变量时输出：

with testis 10.8.11.72 from 10.8.11.72 (10.111.72.1)

Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120

import paramiko

router_channel.send('sh ip bgp 10.23.24.32\n')
buff = ''
best_test =()
while not buff.endswith('#'):
    resp = router_channel.recv(99999)
    buff += resp
#DMVPN variable Declaration.
bgp_show = buff
bgp_list =  bgp_show.split('Local')
bgp_list.pop(0)
for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
            best_test = best_list[1]
        print '********'
        print buff
        print '********'
        print "Best Path is " + best_test + " with " + "test"
        print '********'

bgp_list =  bgp.split('Local')
bgp_list.pop(0)

#pprint.pprint( bgp_list )

#print bgp_list[2]

for x in bgp_list:
    if 'best' in x:
        best_list = x.split('\n')
        for x in best_list:
            best_list = [x.strip(' ') for x in best_list]
            local_pref = best_list[2]
            local_pref = local_pref.split(',')
            local_pref = local_pref[2]
        print '********'
        print bgp
        print '********'
        print "Best Path is " + best_list[1] + ' with' + local_pref
        print '********'

derp@localhost Test Python Scripts]$ python splitty1.py 
********
sh ip bgp 10.23.24.32 | exclude local
BGP routing table entry for 10.23.24.32/28, version 122378
  Advertised to update-groups:
     1          2          3          4          5          6          7         
     9         
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.111.72 from 10.8.111.72 (10.111.72.2)
      Origin IGP, metric 0, localpref 105, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  Local, (Received from a RR-client)
    10.8.11.72 from 10.8.11.72 (10.111.72.1)
      Origin IGP, metric 0, localpref 110, valid, internal
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.11.73 from 10.8.11.73 (10.111.73.1)
      Origin IGP, metric 0, localpref 120, valid, internal, best
      rx pathid: 0, tx pathid: 0x0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.9.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local
    10.8.11.73 from 10.8.0.1 (10.15.1.41)
      Origin IGP, metric 0, localpref 120, valid, internal
      Originator: 10.111.73.1, Cluster list: 10.15.1.41
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 2
  Local, (Received from a RR-client)
    10.8.111.73 from 10.8.111.73 (10.111.73.2)
      Origin IGP, metric 0, localpref 115, valid, internal
      rx pathid: 0, tx pathid: 0
********
Best Path is 10.8.11.73 from 10.8.11.73 (10.111.73.1) with localpref 120
********
[derp@localhost Test Python Scripts]$

这些台词使我感到不安--

显然，您正在通过best_列表中的值在循环中修改best_列表的值。即使你认为你知道那是什么，我也不知道

尝试为“内部”最佳\u列表使用不同的变量名，看看是否可以解决任何问题。

router\u channel.recv

返回Windows格式文本，其中每行以

'\r\n'

结尾。但是您创建了一个带有

x.split（'\n'）

的列表。这意味着每一行（可能最后一行除外）都将以

'\r'

结尾

在非Windows系统上，如果打印出

'\r'

，则会将光标移回第1列，而不推进该行。因此，当您这样做时：

print "Best Path is " + best_test + " with " + "test"

您正在打印：

Best Path is blah blah blah\r with test

结果如下：

 with testis blah blah blah

最简单的解决方案是使用该方法而不是

str.split（'\n'）

。自动考虑Windows线条端点的：

返回字符串中的行列表，在行边界处断开。此方法使用分割线的方法

如果你遵循链接，它会解释通用换行符：

一种解释文本流的方式，其中以下所有内容都被识别为行尾：Unix行尾约定

'\n'

、Windows约定

'\r\n'

、旧的Macintosh约定

'\r'

输出转储显示带有testis的

（但前面有空格），顶部的摘要显示带有testis的（小写，无空格）。是哪一个？很难想象Python如何在代码中没有大写字母时大写字母w
，或者如何神奇地删除单词前的空格，因此，这两个输出都不太可能…修复了，因为在我尝试将两个脚本保持在同一个位置时，这是一个格式错误，直到关键点。您修复了什么？我没有看到任何编辑历史记录。“当前输出”和“代码执行”部分仍然显示不同的内容，它们都与您发布的代码可能打印的内容不匹配。我尝试使用在最佳列表中为x使用：最佳项目=[x.strip（“”）在最佳列表中为x使用]并且输出没有发生任何变化。先生，您是我的英雄。工作得很有魅力。将best\u list=x.splitlines（'\n'）
更改为best\u list=x.splitlines（）
。