python-pexpect-doc 4.6.0-1 (amd64 binary) in ubuntu cosmic

 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.
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 This is the common documentation package.