pexpect -- Expect module for Python
http://pexpect.sourceforge.net
Pexpect is a pure Python module for spawning child applications;
controlling them; and responding to expected patterns in their
output. Pexpect works like Don Libes' Expect. Pexpect allows your script
to spawn a child application and control it as if a human were typing
commands.
Pexpect can be used for automating interactive applications such as ssh,
ftp, passwd, telnet, etc. It can be used to a automate setup scripts
for duplicating software package installations on different servers. It
can be used for automated software testing. Pexpect is in the spirit of
Don Libes' Expect, but Pexpect is pure Python. Unlike other Expect-like
modules for Python, Pexpect does not require TCL or Expect nor does it
require C extensions to be compiled. It should work on any platform that
supports the standard Python pty module.