Traceback (most recent call last):
  File "serverApp.py", line 7, in <module>
    subprocess.Popen(cmd, stdout=subprocess.PIPE)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py",
line 710, in __init__
    errread, errwrite)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py",
line 1335, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

import subprocess

cmd = ["xterm"]

cmd.extend(['-e','bash','-c','python serverApp.py; exec $SHELL'])