CODEWITHSUNDEEP
python
krock1516
krock1516

Reputation: 461

How to call One function into another function in python 2.6

I'm trying to call a function get_ethname into another function get_ethSpeed, but i'm unable to understand how to get it called.

Many thanks for your inputs in advanced.

The output of the first function returns the name of the NIC interface on the system as below..

[root@tss/]# cat intDetail1.py
#!/usr/bin/python
import ethtool

def get_ethname():
    inames = ethtool.get_devices()
    inameCurr = inames[1]
    print inameCurr
    return inameCurr

def main():
    get_ethname()

main()
[root@tss /]# ./intDetail1.py
eth0

Below is the main code where i'm trying to call it.

 #!/usr/bin/python
    import ethtool
    import subprocess

    def get_ethname():
        inames = ethtool.get_devices()
        inameCurr = inames[1]
        print inameCurr
        return inameCurr

    def get_ethSpeed():
        spd = subprocess.popen("['ethtool',  'get_ethname']", stdout=subprocess.PIPE).communicate()[0]
        print spd
        return spd

    def main():
        get_ethname()
        get_ethSpeed()

    main()

When i run the above code it gives the below error .

  File "/usr/lib64/python2.6/subprocess.py", line 1234, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

My aim is get to main running interface name on the systems and and then get the speed determine of the NIC by using linux system utility ethtool which tells the speed of the Interface:

[root@tss /]# /sbin/ethtool eth0| grep Speed
              Speed: 1000Mb/s

Output look of ethtool eth0 is Below:

[root@tss /]# ethtool eth0
Settings for eth0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 1000Mb/s
        Duplex: Full
        Port: Twisted Pair
        PHYAD: 1
        Transceiver: internal
        Auto-negotiation: on
        MDI-X: Unknown
        Supports Wake-on: g
        Wake-on: g
        Link detected: yes

Upvotes: 0

Views: 253

Answers (1)

OneCricketeer
OneCricketeer

Reputation: 191874

No such device Settings for get_ethname(): No data available

This is still the same problem with the original question. You're passing a literal string and expecting the shell to invoke the Python function?

There's no quotes here except around the actual shell command 

spd = subprocess.Popen(['/sbin/ethtool', get_ethname()], stdout=subprocess.PIPE).communicate()[0]

Or, make another variable 

iface = get_ethname()
 # Or 
 iface = ethtool.get_devices()[1]

spd = subprocess.Popen(['/sbin/ethtool', iface], stdout=subprocess.PIPE).communicate()
return spd[0]

Note that you'll still need to grep (or scan the output with python) for "Speed"

Upvotes: 1

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