从字典访问一组值

Question

I have a dictionary in python that is statically initialized as shown below

switch_port_to_host = {
                's1-eth1':'00:00:00:00:00:01',
                's4-eth1':'00:00:00:00:00:02',
                's2-eth1':'00:00:00:00:00:02',
                's5-eth1':'00:00:00:00:00:05',
                's3-eth1':'00:00:00:00:00:03',
                's6-eth1':'00:00:00:00:00:06'
               };

How do I get the mac-addresses alone inside a loop.Basically I want to be able to print out

00:00:00:00:00:01
00:00:00:00:00:02
00:00:00:00:00:03
00:00:00:00:00:04
00:00:00:00:00:05
00:00:00:00:00:06

How do I do this.

Answer 1

Iterate over switch_port_to_host , it'll give you the key then print the value of the key

switch_port_to_host = {
                's1-eth1':'00:00:00:00:00:01',
                's4-eth1':'00:00:00:00:00:02',
                's2-eth1':'00:00:00:00:00:02',
                's5-eth1':'00:00:00:00:00:05',
                's3-eth1':'00:00:00:00:00:03',
                's6-eth1':'00:00:00:00:00:06'
               };

for i in switch_port_to_host:
    print switch_port_to_host[i]

Answer 2

Use:

 switch_port_to_host.values()

To get the set of values as a list .

You can print them on separate lines using:

for x in switch_port_to_host.values():
    print x

Answer 3

dict = {
                's1-eth1':'00:00:00:00:00:01',
                's4-eth1':'00:00:00:00:00:02',
                's2-eth1':'00:00:00:00:00:02',
                's5-eth1':'00:00:00:00:00:05',
                's3-eth1':'00:00:00:00:00:03',
                's6-eth1':'00:00:00:00:00:06'
        }


# get values 
print dict.values()


#by lines
for value in dict.values():
    print value

values() gets your the values of your dictionary called dict .

Output as expected: