May 26, 2018

Run a subprocess in a pseudo terminal

Launch a subprocess in a pseudo terminal pty, and interact with both the process and its pty.

Sometimes, piping stdin and stdout is not enough. There might be a password prompt that doesn’t read from stdin, output that changes when it’s going to a pipe rather than a terminal, or curses-style interfaces that rely on a terminal. If you need to automate these things, running the process in a pseudo terminal pty is the answer.

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