Question

我试图通过分配给键的多个值来迭代字典。像这样：

devices =  {'device_ip':('10.1.1.1','10.1.1.2','10.1.1.3'),
        'device_hostname':('sw1','sw2','sw3')}

然后我尝试将IP和Hostname值传递给类似的东西：

scp_command = 'sshpass -p 123 scp -o StrictHostKeyChecking=no cisco@' + devices['device_ip'] + ':startup.cfg ' + devices['device_hostname'] + filename

我不想要的是为每个IP /主机名对修改scp_command，并重复使用此变量以使代码中的行数最少。

Answer 1

如何为每个Here it's really simple to launch google maps from your application: //geo:0,0 if you don't have lat/lng for the location and just wanna search using address. Uri gmmIntentUri = Uri.parse("geo:0,0?q=pass the address here"); Intent mapIntent = new Intent(Intent.ACTION_VIEW, gmmIntentUri); //set package to "com.google.android.apps.maps" so that only google maps is opened. mapIntent.setPackage("com.google.android.apps.maps"); startActivity(mapIntent);对分配list？

key-value

使用：devices = {'device_ip':['10.1.1.1','10.1.1.2','10.1.1.3'], 'device_hostname':['sw1','sw2','sw3']}

访问他们

Answer 2

正如我在评论中已经提到的，我会寻求不同的数据结构：

devices = {'sw1':'10.1.1.1',
           'sw2':'10.1.1.2',
           'sw3':'10.1.1.3'}

要构建scp_command字符串，我建议使用str.format，例如：

scp_command = 'sshpass -p 123 scp -o StrictHostKeyChecking=no cisco@{ip}:startup.cfg {host} {file}'
cfg_file='example.cfg'
for device in devices:
    print(scp_command.format(ip=devices[device], host=device, file=cfg_file))

通过这种方式，您可以在字符串中引入占位符{}，并将.format()替换为您当前的数据。结果：

sshpass -p 123 scp -o StrictHostKeyChecking=no cisco@10.1.1.1:startup.cfg sw1 example.cfg
sshpass -p 123 scp -o StrictHostKeyChecking=no cisco@10.1.1.2:startup.cfg sw2 example.cfg
sshpass -p 123 scp -o StrictHostKeyChecking=no cisco@10.1.1.3:startup.cfg sw3 example.cfg

Python Dictionary每个键有多个值

2 个答案: