Question

我正在尝试使用python将cisco运行配置转换为参数，并且我被困在使用python读取配置部分。假设您有以下节：

!
interface Async1
 no ip address
 encapsulation slip
!       
router bgp 65500
 bgp router-id 1.1.1.1
 bgp log-neighbor-changes
 timers bgp 10 30
 neighbor 1.2.3.4 remote-as 1234
 neighbor 1.2.3.4 description Some Description
 neighbor 1.2.3.4 update-source GigabitEthernet0/0
 !
 address-family ipv4
  network 2.2.2.2 mask 255.255.255.255
  network 3.3.3.0 mask 255.255.255.252
  neighbor 1.2.3.4 activate
  neighbor 1.2.3.4 allowas-in 3
  neighbor 1.2.3.4 prefix-list PXL out
 exit-address-family
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!

我想从'router bgp'读取行，直到第一行以'！'开头（例如^！），然后重新读取该块以将参数提取到变量中。示例输出为：

router bgp 65500
 bgp router-id 1.1.1.1
 bgp log-neighbor-changes
 timers bgp 10 30
 neighbor 1.2.3.4 remote-as 1234
 neighbor 1.2.3.4 description Some Description
 neighbor 1.2.3.4 update-source GigabitEthernet0/0
 !
 address-family ipv4
  network 2.2.2.2 mask 255.255.255.255
  network 3.3.3.0 mask 255.255.255.252
  neighbor 1.2.3.4 activate
  neighbor 1.2.3.4 allowas-in 3
  neighbor 1.2.3.4 prefix-list PXL out
 exit-address-family
!

注意：我可以使用awk或grep提取上述代码，但是我想将bash代码转换为Python。

谢谢！

Answer 1

尝试一下：

from ciscoconfparse import CiscoConfParse

bgp = confparse.find_blocks(r"^router bgp 65500")

Answer 2

由于有关于stackoverflow的另一篇文章，我找到了一种从运行config提取配置节的方法。帖子位于Reading a file for a certain section in python。

提取下面的“ router bgp”部分的工作代码：

bgp_found = False

bgp_section = []

with open('running-config', 'r') as f:
    for line in f.readlines():
        if 'router bgp' in line:
            bgp_found = True
            bgp_section.append(str(line).rstrip('\n'))  # this will append the section start to list
            continue
        if bgp_found:
            if line.startswith('!'):  # this will test if line starts with '!'
                bgp_found = False
            else:
                bgp_section.append(str(line).rstrip('\n'))
print (bgp_section)  # just for testing purposes; list would be used to extract rest of parameters

希望对其他人也有用。

使用Python从文件中读取节

2 个答案: