Запуск shell с параметрами

import  subprocess 
 
print subprocess.call(['proga', --version])

import subprocess
import time
 
cmd2 = '/usr/bin/xterm -hold -e "python /home/jabbson/Downloads/wait.py 10"'
b = subprocess.Popen(cmd2, shell=True)
 
time.sleep(3)    # sleep for 3 secs
print(b.poll())  # should be None (prog is running)
time.sleep(2)    # sleep for 2 secs
print(b.poll())  # should be None (prog is running)
print("start waiting")
b.wait()         # wait for external program to end
print("stop waiting")
time.sleep(1)    # sleep 1 sec
print(b.poll())  # should be 0 (prog is done)

import subprocess
import time
# cmd1 = '/usr/bin/gnome-terminal -e "python /home/bmf/test.py"'
cmd1 = 'gnome-terminal -e "python /home/bmf/test.py"'
b = subprocess.Popen(cmd1,shell=True)
time.sleep(3)    # sleep for 3 secs
print(b.poll())  # should be None (prog is running)
time.sleep(2)    # sleep for 2 secs
print(b.poll())  # should be None (prog is running)
print("start waiting")
b.wait()         # wait for external program to end
print("stop waiting")
time.sleep(1)    # sleep 1 sec
print(b.poll())  # should be 0 (prog is done)

import time
 
i = 50
while i > 0:
    print 'test'
    time.sleep(1)
    i = i - 1

import subprocess
import time
 
# cmd1 = '/usr/bin/gnome-terminal -e "python /home/bmf/test.py"'
cmd1 = 'gnome-terminal -e "python /home/bmf/sqlmap-dev/test.py"'
b = subprocess.Popen(cmd1, shell=True)
print b.poll()    # вот тут вывод None
time.sleep(3) 
print(b.poll())  
time.sleep(2)    
print(b.poll())  
print("start waiting")
b.wait()    
print("stop waiting")
time.sleep(1)   
print(b.poll())