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Guido van Rossumecde7811995-03-28 13:35:14 +00001\chapter{Optional Operating System Services}
2
3The modules described in this chapter provide interfaces to operating
4system features that are available on selected operating systems only.
5The interfaces are generally modelled after the \UNIX{} or C
6interfaces but they are available on some other systems as well
7(e.g. Windows or NT). Here's an overview:
8
9\begin{description}
10
11\item[signal]
12--- Set handlers for asynchronous events.
13
14\item[socket]
15--- Low-level networking interface.
16
17\item[select]
18--- Wait for I/O completion on multiple streams.
19
20\item[thread]
21--- Create multiple threads of control within one namespace.
22
23\end{description}