script.py

import re
import os

output = os.popen('sudo docker ps -a| grep "p4app_"').read()

re1='.*?'
re2='(?:[a-z][a-z0-9_]*)'
re3='.*?'
re4='(?:[a-z][a-z0-9_]*)'
re5='.*?'
re6='(?:[a-z][a-z0-9_]*)'
re7='.*?'
re8='(?:[a-z][a-z0-9_]*)'
re9='.*?'
re10='(?:[a-z][a-z0-9_]*)'
re11='.*?'
re12='(?:[a-z][a-z0-9_]*)'
re13='.*?'
re14='(?:[a-z][a-z0-9_]*)'
re15='.*?'
re16='(?:[a-z][a-z0-9_]*)'
re17='.*?'
re18='(?:[a-z][a-z0-9_]*)'
re19='.*?'
re20='(?:[a-z][a-z0-9_]*)'
re21='.*?'
re22='(?:[a-z][a-z0-9_]*)'
re23='.*?'
re24='((?:[a-z][a-z0-9_]*))'

prog_name = raw_input("Enter program name: ")
if prog_name == 'load_balancer' or 'ipv4_forward':
    prog_name = 'mri'

container_name = ''

rg = re.compile(re1+re2+re3+re4+re5+re6+re7+re8+re9+re10+re11+re12+re13+re14+re15+re16+re17+re18+re19+re20+re21+re22+re23+re24,re.IGNORECASE|re.DOTALL)
m = rg.search(output)
if m:
    container_name = str(m.group(1))

else:
    print "[ERROR] Run this script only after you have run the p4app for scrambler.p4app"

os.system('sudo docker cp rs/send-'+prog_name+'.py ' + container_name + '://scripts/send.py') 
os.system('sudo docker cp rs/receive-'+prog_name+'.py ' + container_name + '://scripts/receive.py')

print "[INFO] Operation successful"