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O'Reilly Platform
book
可编程网络自动化
by
Jason Edelman
,
Scott S. Lowe
,
Matt Oswalt
January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Posts & Telecom Press
Content preview from
可编程网络自动化
在网络场景中学习
Python
|
109
>>>
from push import
push_commands
>>>
>>> device = 'router1'
>>> commands = ['interface Eth1/1', 'shutdown']
>>>
>>> push_commands(device, commands)
Connecting to device: router1
Sending command: interface Eth1/1
Sending command: shutdown
>>>
建议在使用
import
语句时尽可能具体,只导入需要的部分。别使用通配符
导入(比如
from push import *
)。这种语句会载入模块中的所有对象,有可
能过了头,与已定义的对象产生名称冲突。另外还会使故障排除变得更加复
杂,因为难以判断对象的来源。
还可以使用
from import as
将导入的对象重命名。如果不喜欢对象名,或是觉得名称太
长,则可以在导入的时候进行重命名,如下所示。
>>>
from push import
push_commands
as
pc
>>>
重命名对象非常简单,可以使其名称变得更简短、更直观。
下面将其运用在示例中。
>>>
from push import
push_commands
as
pc
>>>
>>> device = 'router1'
>>> commands = ['interface Eth1/1', 'shutdown'] ...
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Publisher Resources
ISBN: 9787115606181