Start interactive SSH session from Python script

I'd like to start an interactive SSH terminal from a Python script without using modules like pexpect or paramiko - I want to stick with what CentOS pre-installed Python provides me (to ease compatibility and deployment issues). I can run commands fine using the subprocess module, but cannot get an interactive terminal. In Perl, I would just use backticks to achieve this, but am looking for the pythonic way of doing this. Can someone point me in the right direction? UPDATE - based on @leoluk's answer, I used the instructions from docs.python.org to come up with: `subprocess.call("ssh ...", shell=True)`