Ansible-按最后一个参数，一个IP地址对命令列表进行排序

Question

我有要发送到杜松路由器的命令列表。我如何在命令末尾按IP地址对列表进行排序？

从此生成set_fact和_items

生成

"command_list": [
    "show bgp neighbor 1.1.1.1",
    "show bgp neighbor 2.2.2.2",
    "show bgp neighbor 3.3.3.3",
    "show route receive-protocol bgp 1.1.1.1",
    "show route receive-protocol bgp 2.2.2.2",
    "show route receive-protocol bgp 3.3.3.3",
    "show route advertising-protocol bgp 1.1.1.1",
    "show route advertising-protocol bgp 2.2.2.2"
    "show route advertising-protocol bgp 3.3.3.3"
]

，由目标IP订购。

"command_list": [
    "show bgp neighbor 1.1.1.1",
    "show route receive-protocol bgp 1.1.1.1",
    "show route advertising-protocol bgp 1.1.1.1",
    "show bgp neighbor 2.2.2.2",
    "show route receive-protocol bgp 2.2.2.2",
    "show route advertising-protocol bgp 2.2.2.2"
    "show bgp neighbor 3.3.3.3",   
    "show route receive-protocol bgp 3.3.3.3",        
    "show route advertising-protocol bgp 3.3.3.3"
]

Answer 1

在list上使用sorted操作，并利用其key参数在进行比较之前指定要在每个列表元素上调用的函数。

command_list = [
    "show bgp neighbor 1.1.1.1",
    "show bgp neighbor 2.2.2.2",
    "show bgp neighbor 3.3.3.3",
    "show route receive-protocol bgp 1.1.1.1",
    "show route receive-protocol bgp 2.2.2.2",
    "show route receive-protocol bgp 3.3.3.3",
    "show route advertising-protocol bgp 1.1.1.1",
    "show route advertising-protocol bgp 2.2.2.2",
    "show route advertising-protocol bgp 3.3.3.3"
]
def last(a):
    for i in reversed(a.split()):
        return i
print(sorted(command_list, key=last))

输出：

 ['show bgp neighbor 1.1.1.1',
 'show route receive-protocol bgp 1.1.1.1',
 'show route advertising-protocol bgp 1.1.1.1',
 'show bgp neighbor 2.2.2.2', 
 'show route receive-protocol bgp 2.2.2.2', 
 'show route advertising-protocol bgp 2.2.2.2',
 'show bgp neighbor 3.3.3.3',
 'show route receive-protocol bgp 3.3.3.3',
 'show route advertising-protocol bgp 3.3.3.3']