[Python] How do you execute multiple commands in a single session in Paramiko? (Python)

def exec_command(self, command, bufsize=-1):
#print "Executing Command: "+command
chan = self._transport.open_session()
chan.exec_command(command)
stdin = chan.makefile('wb', bufsize)
stdout = chan.makefile('rb', bufsize)
stderr = chan.makefile_stderr('rb', bufsize)
return stdin, stdout, stderr


When executing a command in paramiko, it always resets the session when you run exec_command. I want to able to execute sudo or su and still have those privileges when I run another exec_command. Another example would be trying to exec_command("cd /") and then run exec_command again and have it be in the root directory. I know you can do something like exec_command("cd /; ls -l"), but I need to do it in separate function calls.

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