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Revision b3f756404a1da3e17a25efcf03dc70c498549693 authored by Ezio Melotti on 16 March 2011, 10:46:40 UTC, committed by Ezio Melotti on 16 March 2011, 10:46:40 UTC
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Tip revision: b3f756404a1da3e17a25efcf03dc70c498549693 authored by Ezio Melotti on 16 March 2011, 10:46:40 UTC
Revert typo fixes in zlib/*
Revert typo fixes in zlib/*
Tip revision: b3f7564
pty.rst
:mod:`pty` --- Pseudo-terminal utilities
========================================
.. module:: pty
:platform: Linux
:synopsis: Pseudo-Terminal Handling for Linux.
.. moduleauthor:: Steen Lumholt
.. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
The :mod:`pty` module defines operations for handling the pseudo-terminal
concept: starting another process and being able to write to and read from its
controlling terminal programmatically.
Because pseudo-terminal handling is highly platform dependent, there is code to
do it only for Linux. (The Linux code is supposed to work on other platforms,
but hasn't been tested yet.)
The :mod:`pty` module defines the following functions:
.. function:: fork()
Fork. Connect the child's controlling terminal to a pseudo-terminal. Return
value is ``(pid, fd)``. Note that the child gets *pid* 0, and the *fd* is
*invalid*. The parent's return value is the *pid* of the child, and *fd* is a
file descriptor connected to the child's controlling terminal (and also to the
child's standard input and output).
.. function:: openpty()
Open a new pseudo-terminal pair, using :func:`os.openpty` if possible, or
emulation code for generic Unix systems. Return a pair of file descriptors
``(master, slave)``, for the master and the slave end, respectively.
.. function:: spawn(argv[, master_read[, stdin_read]])
Spawn a process, and connect its controlling terminal with the current
process's standard io. This is often used to baffle programs which insist on
reading from the controlling terminal.
The functions *master_read* and *stdin_read* should be functions which read from
a file descriptor. The defaults try to read 1024 bytes each time they are
called.
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