popen3,4 and SIGTERM

[Zoran Bosnjak]

This simple script works with python2.1.1, but it does not work with any
newer version of python on linux. Do you think it is a bug? Where?

This program does nothing, it just suppose to end after 3 seconds,
but os.kill(...) does not kill the ping process. Even if I do it from
the shell, I need to use kill -9 <pid>.

With python2.1.1 it works as expected.

regards,
Zoran

---- cut here
import os, time, signal, threading, string 
from popen2 import Popen3, Popen4 
  
pid = 0 
   
def run(): 
    global pid 
    f = Popen4('ping localhost') 
    pid = f.pid 
    print 'pid from thread', pid
    while 1: 
        s = f.fromchild.readline() 
        if not s: break 
            
                                            
t = threading.Thread(target=run) 
t.start() 
time.sleep(3) 
print 'timeout' 
print 'pid from main', pid
os.kill(pid, signal.SIGTERM) 
t.join() 
print 'bye'