Python Function to test ping

Question

I m trying to create a function that I can call on a timed basis to check for good ping and return the result so I can update the on-screen display  I am new to python so I don t fully understand how to return a value or set a variable in a function   Here is my code that works   import os hostname    google com  response   os system  ping -c 1     hostname  if response    0      pingstatus    Network Active  else      pingstatus    Network Error    Here is my attempt at creating a function   def check ping        hostname    google com      response   os system  ping -c 1     hostname        and then check the response        if response    0          pingstatus    Network Active      else          pingstatus    Network Error    And here is how I display pingstatus   label   font status render   s    pingstatus  1   0 0 0     So what I am looking for is how to return pingstatus from the function  Any help would be greatly appreciated

User · Accepted Answer

It looks like you want the return keyword  def check ping        hostname    taylor      response   os system  ping -c 1     hostname        and then check the response        if response    0          pingstatus    Network Active      else          pingstatus    Network Error       return pingstatus   You need to capture  receive  the return value of the function pingstatus  in a variable with something like   pingstatus   check ping     NOTE  ping -c is for Linux  for Windows use ping -n  Some info on python functions   http   www tutorialspoint com python python functions htm  http   www learnpython org en Functions  It s probably worth going through a good introductory tutorial to Python  which will cover all the fundamentals  I recommend investigating Udacity com and codeacademy com

User · Answer

Try this  def ping server  example com   count 1  wait sec 1                 rtype  dict or None             cmd    ping -c    -W        format count  wait sec  server  split          try          output   subprocess check output cmd  decode   strip           lines   output split   n           total   lines -2  split      3  split   1          loss   lines -2  split      2  split   0          timing   lines -1  split   3  split              return                type    rtt                min   timing 0                avg   timing 1                max   timing 2                mdev   timing 3                total   total               loss   loss                except Exception as e          print e          return None

User · Answer

Adding on to the other answers  you can check the OS and decide whether to use  -c  or  -n    import os  platform host    8 8 8 8  os system  ping       -n 1   if  platform system   lower     windows  else  -c 1      host    This will work on Windows  OS X  and Linux  You can also use sys   import os  sys host    8 8 8 8  os system  ping       -n 1   if  sys platform   lower     win32  else  -c 1      host

User · Answer

Here is a simplified function that returns a boolean and has no output pushed to stdout   import subprocess  platform def pingOk sHost       try          output   subprocess check output  ping -   1     format  n  if platform system   lower     windows  else  c   sHost   shell True       except Exception  e          return False      return True

User · Answer

This is my version of check ping function  May be if well be usefull for someone   def check ping host   if platform system   lower       windows   response   os system  ping -n 1 -w 500     host      gt  nul   if response    0  return  alive  else  return  not alive  else  response   os system  ping -c 1 -W 0 5    host     gt   dev null   if response    1  return  alive  else  return  not alive

[python] Python Function to test ping

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